DNA图谱 / 问答 / 问答详情

烦请告诉在什麼情况下用"SINCE",它的主要用法是什麼???

2023-07-02 14:28:43
共4条回复
gitcloud

since conj., prep., ad.自从;既然

[读与写]1. 有多种方法来翻译“他的父亲去世两年了。”

句1:It"s two years since his father"s death.

句2:It has been two years since his father died.

句3:Two years have passed since his father died.

句4:His father has been dead for two years.

句5:His father died two years ago.

2. since既可作连词后接从句(句2,3),又可作介词后接名词(句1)。

3. since引起时间状语从句中通常用一般过去时(句2,3)。间或可以用完成时态:

It was two years since we had been here. 那时我们在这儿已经两年了。

4. since引起时间状语既可以与现在完成时连用(句2,3),也可以与过去完成时连用:

He said that he had been here since last summer. 他说他自从去年夏天就一直在这儿。

5. since后只能接“一点时间”而不是“一段时间”, 而for后则接“一段时间”(句4)。但是可以说since …ago, 例如:

He"s been there for over two years. He"s been there since two years ago. 他在那儿住了两年多,他从两年前就在那儿了。

6. since可以作副词:It seems she was in class on Friday afternoon, but no one has seen her since. 好象星期五下午她还在班里,但自那以后就没有人见过她了。

7. since可以作“既然”讲,引导原因状语从句:Why do people come to his lectures since he is difficult to understand? 既然他的话很难听懂,为什么大家还要来听他的学术报告呢?

[讲与评] 在句型“It"s + 一段时间 + since从句 ”中,since引起时间状语从句中的谓语既可以用一时性动词,也可以用持续性动词,但两种句子意思迥然不同,例如:

It"s two years since he joined the League. 他入团已经两年了。

It"s two years since he was a League member. 他退团已经两年了。

可可科科

since的四种用法

1) since +过去一个时间点 (如具体的年、月、日期、钟点、1980, last month, half past six)。

I have been here since 1989.

2) since +一段时间+ ago

I have been here since five months ago.

3) since +从句

Great changes have taken place since you left.

Considerable time has elapsed since we have been here.

4) It is +一段时间+ since从句

It is two years since I became a postgraduate student

左迁

1.可以用于点时间前,用在现在完成时态:

I have been here since last year.

2.用于原因,意思是既然

Since every one is here,let"s begin our class.

volcanoVol

介词 自~以来

连词 自从,既然

主句(完成时)+SINCE+时间从句(过去时)

SINCE+原因从句+主句

SINCE+条件从句+主句

相关推荐

since的用法有哪些?

since的用法时态有:since+过去一个时间点(如具体的年、月、日期、钟点、1980,last month,half past six)。since+一段时间+ago。since+从句。It is+一段时间+since从句等。基本字义since英[su026ans]美[su026ans]prep.自从;在…之后;自…后conj.自从…以来;自从…以后;自…以后;在…之后;因为;既然adv.从此;此后;后来;之后扩展资料:用法1)since+过去一个时间点(如具体的年、月、日期、钟点、1980,last month,half past six)。例如:I have been here since 1989.1989起,我一直在这儿。2)since+一段时间+ago.例如:I have been here since five months ago. 我在这儿,已经有五个月了。3)since+从句。例如:Great changes have taken place since you left. 你走后,变化可大了。Great changes have taken place since we were here.我们走后,变化可大了。4)It is+一段时间+since从句。例如:It is two years since I became a postgraduate student. 我考上研究生有两年了。
2023-07-02 13:49:121

since的用法有哪些?

1、现在完成(进行)时态+since+短暂动词的一般过去时。表示从句动作"开始” 以来,主句活动在持续。例:I have worked in this company since I graduated.翻译:自从我毕业以来,我就在这家公司上班。2、现在完成(进行)时态+since+延续动词的般过去时。表示从句动作“结束" 以来,主句活动在持续。例:It has been / is a long time since Mark lived here.翻译:马克早就不在这儿住了。3、现在完成(进行)时态+since+延续动词的现在完成时。表示从句动作"开始"以来,主句活动在持续。例:He hasn"t contacted me since I have worked inthat company.翻译:自从我开始在那家公司工作后,他就再没有和我联系过。since一、含义:conj. 因为;既然;自从。prep. 自从。adv. 此后。二、用法since用作介词的意思是“从…以来,自从…之后”,其宾语常指过去的一个时间点,其含义通常指持续到说话时刻的动作或情况开始于什么时候。since之后常接名词、动名词作其宾语,since then意为“从那以后”。since引导时间状语从句时,若主句表示目前的状况是由于过去某一件事所造成的后果或影响时,其谓语动词也可以用一般现在时;有时候,通过上下文,可以看出从句的动作是延续到过去某个时间,这时主句的谓语动词要用过去完成时;如果主句的动作是从过去某时一直延续到现在,主句可用现在完成进行时。Bows and arrows have long since been out of use.弓箭很早以前就没人使用了。扩展资料:近义词:ago。ago一、含义:adv. 以前。二、用法ago是表示时间的副词,其基本意思是“以前”,表示事情发生在“从此刻算起若干时间以前”,也可以表示“事情发生距现在有多长时间”。简言之,ago的时间参照点是现在。ago在句中一般不单独使用,须与表示时间的名词或副词搭配使用,且要放在它所修饰词的后面。The dinosaurs disappeared long ago.恐龙很久以前就绝种了。
2023-07-02 13:49:271

since的用法归纳

since的用法归纳如下:一、Since作为介词,后接某一确定的时间点,主句谓语动词是持续性动词,常与现在完成时态、现在完成进行时态或过去完成时态连用。例如:1、He left the village in 1982 and I haven"t seen him since then.1982年他离开这个村子,从那以后我再没见过他。2、She"s been working in a bank since leaving school.她中学毕业后就一直在一家银行工作。二、Since作为副词,表示从过去以来、以后或到现在的情形或状态,常与现在完成时态连用。例如:1、He left home two weeks ago and we haven"t heard from him since.他两周前离开了家,到现在我们一直没有他的消息。三、since引导原因状语从句作为连词,since可引导原因状语从句,表示因为;既然;鉴于:例如:1、He didn"t come since he was busy.他因为忙,所以没有来。四、Since引导时间状语从句。1、若since引导的状语从句的谓语是终止性动词的过去时,则从句表示的时间是“从动作开始的那一时刻起”。例如:He has studied very hard since he came to our school.自从他来到我们学校,他学习就非常努力。2、若since引导的状语从句的谓语动词是持续性动词或表示状态动词的过去时时,则从句表示的时间是“从动作或状态结束时算起”。例如:I haven"t heard any noise since I slept. Sleep为持续性动词,sleep的动作结束时,即“醒来”时,所以这句应译为“我醒后还未听到任何声音”。五、Since在特殊句型中的应用句型I:“It is(has been)+时间+since+持续性动词的过去时”,表示“自从…以来到现在已有多久。”例如:It has been quite some time since I was last in London.我上次离开伦敦至今颇有一段时间了。句型II:“It was+时间+since+持续性动词的过去完成时”,表示“从……到过去某时间点以来”,例如:It was three years since we had been here.那时我们在这已呆了三年。
2023-07-02 13:49:441

since的用法总结 since的用法有哪些

since的用法总结如下: 1、Since作为介词 后接某一确定的时间点,主句谓语动词是持续性动词,常与现在完成时态、现在完成进行时态或过去完成时态连用。 2、Since作为副词 表示从过去以来、以后或到现在的情形或状态,常与现在完成时态连用。 3、since引导原因状语从句 作为连词,since可引导原因状语从句,表示因为;既然;鉴于。 4、Since引导时间状语从句 若since引导的状语从句的谓语是终止性动词的过去时,则从句表示的时间是“从动作开始的那一时刻起”。 若since引导的状语从句的谓语动词是持续性动词或表示状态动词的过去时时,则从句表示的时间是“从动作或状态结束时算起”。
2023-07-02 13:49:571

since的用法

prep. (介词): since用作介词的意思是“从…以来,自从…之后”,其宾语常指过去的一个时间点,其含意通常指持续到说话时刻的动作或情况开始于什么时候。 since之后常接名词、动名词作其宾语,since then意为“从那以后”。 扩展资料   adv. (副词):   since用作副词表示“以前”时还可和long, ever连用。long since意为“好久以前”, not long since意为“就在不久前”, ever since意为“从那时起,此后一直”。   conj. (连词):   since用作连词作“自从…以来〔以后或,现在〕”解时,引导时间状语从句,在主句是现在完成时的情况下,如果since从句中谓语动词用一般过去时,则表示动作或状态的完成。   计时的起点是动作或状态完成的那一时刻,在语意上,非延续性动词的句子与其词意一致,含有肯定的意味,而延续性动词的句子与其词意恰好相反,含有否定的意味。   如果since从句用延续性动词的现在完成时,则表示该动作或状态一直延续到现在时刻,而且可以包括现在时刻在内,时间的.起点应从动作发生之时算起,句子的意思和动词的词意一致,具有肯定意味。   在现代英语中,延续性动词的一般过去时有时也可表示动作或状态延续到现在时刻,时间的起点从动作或状态发生之时算起,不过这类句子多半要用ever来加强since的语意,然而,since从句中的谓语动词如果是非延续性动词,即使用ever来加强语意,也绝不意味着从句动作有什么延续性。   since的例句:   It"s been two weeks now since she called.   她到现在已经有两个星期没来电话了。   I had been out since I was 17.   我从17岁起就公开我是同性恋。   The children are completely out of control since their father left.   这些孩子自他们的父亲离开后就无法无天了。
2023-07-02 13:50:201

since的四种用法

since的四种用法如下:since+时间点,要求谓语动词用现在完成时,而且必须是延续性动词。since+一段时间+ago,要求谓语动词用现在完成时,而且必须是延续性动词。since+从句,要求主句谓语动词用现在完成时,而且必须是延续性动词;从句谓语动词用一般过去时,而且是终止性动词。It is/ has been +一段时间+since从句,意为“自从……以来已经(多久)了”。Example: I have stayed in that country since 1995. 从1995年以来我就在那个国家了。Example: They have lived in that house since two years ago. 两年前他们就住在那座房子里了。Example: Lily has stayed at home since she left school. 莉莉离开学校之后就一直呆在家里。Example: It has been three months since he moved to this city. 他搬到这个城市已经三个月了。
2023-07-02 13:50:261

since的用法

since的四种用法(***)1)since +过去一个时间点(如具体的年、月、日期、钟点、1980, last month, half past six)。例如:I have been here since 1989. 1989起,我一直在这儿。2)since +一段时间+ ago。例如:I have been here since five months ago. 我在这儿,已经有五个月了。3)since +从句。例如:Great changes have taken place since you left. 你走后,变化可大了。Great changes have taken place since we were here. 我们走后,变化可大了。4)It is +一段时间+ since从句。例如:It is two years since I became a postgraduate student. 我考上研究生有两年了。
2023-07-02 13:51:202

since的用法

since 1. 作为介词,后面接名词,例如:since 19952. 作为连词,后面接状语从句(原因状语从句),例如:Since I came here, I felt happy.所以,since既可以作介词又可以作连词。
2023-07-02 13:51:411

since的用法

"Since" 是一个常见的连词,用于表示一个事件或时间点之后发生的另一个事件,或者作为引导原因的词语。以下是 since 的主要用法:表示“自从”,用于说明一件事从过去的某个时间开始一直持续到现在,常与现在完成时一起使用。例如:I have been studying English since I was a child.(我从小就开始学习英语了。)表示“因为”,引导原因状语从句,用于说明导致某个结果的原因。例如:I have been tired since I got up early this morning.(我因为今天早上起得早,一直感到疲劳。)表示“自从...以来”,引导时间状语从句,用于说明一个时间点或事件之后发生的另一个事件。例如:He has been unhappy since his girlfriend left him.(自从他女朋友离开他以来,他一直不开心。)表示“自从...已经”,用于说明某事自从某个时间开始就已经持续了很久。例如:It has been a long time since we last saw each other.(自从我们上次见面已经很长时间了。)请点击输入图片描述总之,since 作为一个常用的连词,可以用来表示时间或原因等,用法相对灵活,需要根据具体的语境进行理解和使用。
2023-07-02 13:51:491

since的用法时态

since的用法时态since一般用于“现在完成时”或“一般现在时”;,since表示“自从”时,通常与现在完成时连用;,主句表示“多长时间”时,动词可用一般现在时(也可用现在完成时)。,一、since通常搭配的时态  ,当since表示“自从”时,不管它是用作介词、连词还是副词,它通常都要与现在完成时连用。  ,I"vewornglassessincemychildhood.,我从小就戴眼镜。  ,TheworkshavebeenclosedsinceJanuary.,一月份以来这些厂就关闭了。  ,He"sputonalotofweightsincehegaveupsmoking.,他戒菸后体重增加了许多。  有时连用现在完成进行时。如:  ,Hehasbeenworkingsincenoon.,他从中午就开始工作了。  二、since搭配时态的特殊情况  ,虽然since通常要与现在完成时连用,但在以下情况,它也可以连用除完成时态以外的其他时态:1.当主句表示“多长时间”时,动词可用一般现在时(当然也可用现在完成时)。,如:  ,It"salongtimesinceImetyoulast.,好久不见了。  ,It"sjustaweeksincewearrivedhere.,我们到这里才一个星期。   以上各句的itis也可换成ithasbeen,不过在口语或非正式文体中,用一般现在时的情形比较普遍。  ,2.当主句谓语动词为seem等连系动词时。,如:  ,Itseemslikeyearssincewelastmet.,我们似乎几年未见面了。  ,ItseemslikeyearssinceIlastsawyou.,从上次见到你以来好像已经有许多年了。  ,3.当主句和从句表示情况“变化”时。,如:  ,Shedoesn"teroundtoseeussomuchsincehermarriage.,自从结了婚,她不怎么过来看我们了。(原来经常来,结婚后就不怎么来了)  ,since引导时间状语从句的用法:,用法1:since引导的时间状语从句中用短暂性动词的过去式,主句用现在完成时或现在完成进行时。此时,整个句子可以直接按照字面意思翻译。例句1:ShehasdealtwithfiveguyssinceshedivorcedTom.她和汤姆离婚后和五个男人交往过。例句2:Ihavebeenmissinghersincesheleft.自从她离开我就一直很想念她。用法2:since引导的时间状语从句中用延续性动词或者状态动词的过去式,主句用现在完成时或者现在完成进行时。此时,时间状语从句指示的时间是这个延续性动作结束直到现在这个时间段,翻译时不能按照字面翻译。例句1:IthasbeenalmostfiveyearssinceItaughthighschoolstudents.我不教高中已经大概有五年了。例句2:IhavechangedmyjobfivetimessinceIwasinShanghai.我离开上海后换了五次工作。用法3:since引导的时间状语从句中的动词用延续性动词的现在完成时,主句的动词用现在完成时或者现在完成进行时。此时,状语从句指示的时间是延续性动作开始一直到现在这个时间段,翻译时可以直接按照字面意思理解。例句1:IthasbeenalmostfiveyearssinceIhavetaughtseniorthreestudents.我从教高三开始到现在已经五年了。例句2:Ihaveneverheardfromhersinceshehasworkedthere.自从她去那工作到现在为止,我没有收到过她的来信。用法4:since引导的时间状语从句中的动词用现在完成进行时,主句谓语动词用一般现在时。此时,不管since引导的时间状语从句的动词是延续性的还是非延续性的都不影响句子的意思,按照字面直接翻译即可。例句1:Wethinkhighlyofyourup-gradingspiritsinceyouhavebeentryingtochangeyourself.从你一直努力改变自己以来,我们都高度赞赏你的上进精神。例句2:Wealladmireyousinceyouhavebeendoingeverythingtohelpthepoor.自从你一直做任何事情帮助穷人以来,我们都很钦佩你。,since引导原因状语从句的用法:,since侧重主句,从句表示显然的或已为人所知的理由,常译为“因为”、“既然”,语气,比because稍弱,通常置于句首,表示一种含有勉强语气的原因。例如:,1)Sinceheasksyou,you”lltellhimwhy.,他既然问你,那就告诉他为什么吧。,2)Sinceeveryoneishere,let”sstart.,既然大家都到齐了,我们就出发吧!
2023-07-02 13:52:181

since的用法时态是什么?

since的用法时态有:since+过去一个时间点(如具体的年、月、日期、钟点、1980,last month,half past six)。since+一段时间+ago。since+从句。It is+一段时间+since从句等。基本字义since英[su026ans]美[su026ans]prep.自从;在…之后;自…后conj.自从…以来;自从…以后;自…以后;在…之后;因为;既然adv.从此;此后;后来;之后扩展资料:用法1)since+过去一个时间点(如具体的年、月、日期、钟点、1980,last month,half past six)。例如:I have been here since 1989.1989起,我一直在这儿。2)since+一段时间+ago.例如:I have been here since five months ago. 我在这儿,已经有五个月了。3)since+从句。例如:Great changes have taken place since you left. 你走后,变化可大了。Great changes have taken place since we were here.我们走后,变化可大了。4)It is+一段时间+since从句。例如:It is two years since I became a postgraduate student. 我考上研究生有两年了。
2023-07-02 13:52:272

since引导的句子的时态的用法

since引导时间状语从句时,从句动词通常用一般过去时,主句动词用现在完成时。since引导原因状语从句对时态没有特殊要求。 扩展资料   用法:   1、Since作为介词,后接某一确定的时间点,主句谓语动词是持续性动词,常与现在完成时态、现在完成进行时态或过去完成时态连用。   例如: He left the village in 1982 and I haven"t seen him since then.   1982年他离开这个村子,从那以后我再没见过他。   2、Since作为副词,表示从过去以来、以后或到现在的情形或状态,常与现在完成时态连用。   例如:He left home two weeks ago and we haven"t heard from him since.   他两周前离开了家,到现在我们一直没有他的消息。   3、接时间点   如 I have stayed in that country since 1995. 要求:谓v.用现在完成时,而且须是延续性动词。   4、接一段时间 + ago   如 They have lived in that house since two years ago. 要求:谓v.用现在完成时,而且须是延续性动词。   5、接时间状语从句   如 I have loved her since I met her last time. / Lily has stayed at home since she left school. 要求:主句的谓v.用现在完成时,而且须是延续性动词;从句的谓v.用一般过去时,而且须是终止性动词。
2023-07-02 13:53:001

since和for的用法

since 表示 一旦。。。就。。。或只要。。。就。。。;for表示原因或目的;
2023-07-02 13:53:241

since前后状态的用法

首先,“since”表示“自从…起,直到现在”,”since”后面一般用过去式句子或单词,词组,前面用完成时态: I"ve never been to a movie since I came to Guangzhou. 我自从到了广州,就没去看过一场电影。I"ve been teaching English since I graduated from college. 我自从大学毕业后,一直教英语。We"ve been very close since we met each other 2 years ago. 我们自从两年前认识后,一直是很要好的朋友。She hasn"t worked since her marriage. 她结婚后,未曾去工作过。Ever since 表示从那时到现在,此后一直:He went to London in 1979, and has lived there ever since. 他1979年去了伦敦,从此之后,一直住在那。“since”的第二种用法,表示原因,“由于,因为,鉴于”,用在稍正式的场合:The hiking is cancelled since it"s raining cats and dogs. 徒步旅行被取消了,因为下着倾盆大雨。Since we have no money, we can"t afford it for the time being. 我们没钱,所以暂时买不起。I can"t go to your class since I am ill. 我不能去上你的课,因为我病了。“for”也可以引导原因,用在稍口语化的场合:I can"t let you do it for it"s gonna damage your reputation. 我不能让你这么做,因为这会毁了你的名声。They call for a meeting for there"s something urgent to discuss right now. 他们要求立即开一个会议,因为发生了紧急的事需要讨论。
2023-07-02 13:53:311

since的用法

conj. 因为;由于;既然;自…以来;自…以后prep. 自…以来;自…以后adv. 后来ever since从那时起;从那时起一直到现在;此后一直;自从long since很久以前;很久以来;早就;从前Even since自从since yesterday从昨天;大衰退时代Since Inception自开业以来;自创办以来;自问世以来;一直以来Since when什么时候开始;从那时以来Since 2000以来年;起二零零零年;成立至今since of犹豫Since Establishment自创业伊始
2023-07-02 13:53:412

关于since的从句用法

since的用法:译作“自从…以来”1、接时间点:如Ihavestayedinthatcountrysince1995.要求:谓v.用现在完成时,而且须是延续性动词。2、接一段时间+ago:如Theyhavelivedinthathousesincetwoyearsago.要求:谓v.用现在完成时,而且须是延续性动词。3、接时间状语从句:如IhavelovedhersinceImetherlasttime./Lilyhasstayedathomesincesheleftschool.要求:主句的谓v.用现在完成时,而且须是延续性动词;从句的谓v.用一般过去时,而且须是终止性动词。4、用于句型“It"s/Ithasbeen+一段时间+since+时间状语从句”中,译作“自从…以来,已经…(时间)了”。如It"s/hasbeenthreemonthssincehemovedtothiscity.要求:主句的谓v.用一般现在时或现在完成时;从句的谓v.用一般过去时,而且须是终止性动词。5、用于句型“一段时间+haspassedsince+时间状语从句”中,译作“自从…以来,…(时间)已经过去了”。如上个例句还可写成:Threemonthshaspassedsincehemovedtothiscity.要求:主句的谓v.用现在完成时,而且动词必须是haspassed;从句的谓v.用一般过去时,而且须是终止性动词。扩展资料since用作介词的意思是“从…以来,自从…之后”,其宾语常指过去的一个时间点,其含意通常指持续到说话时刻的动作或情况开始于什么时候。since之后常接名词、动名词作其宾语,sincethen意为“从那以后”。since用作副词表示“以前”时还可和long,ever连用。longsince意为“好久以前”,notlongsince意为“就在不久前”,eversince意为“从那时起,此后一直”。since用作连词作“自从…以来〔以后或,现在〕”解时,引导时间状语从句,在主句是现在完成时的情况下,如果since从句中谓语动词用一般过去时,则表示动作或状态的完成,计时的起点是动作或状态完成的那一时刻,在语意上,非延续性动词的句子与其词意一致,含有肯定的意味,而延续性动词的句子与其词意恰好相反,含有否定的意味。
2023-07-02 13:53:482

since 和 when用法的区别请举一两个例子

since通常用于完成时,如:I have been riding the bike since I was ten years old.我从十岁起就开始骑车了.它表示你从什么时候开始了这个动作,现在可以是做完了,也可以是还要做的.when可以用许多时态,一般现在时,现在进行时,过去进行时..都可以.这个强调同时,如:I was watching TV when my mother came.当我妈妈进来时我正在看电视.强调同时进行,当我"正在"干什么,我妈妈怎么怎么了.
2023-07-02 13:53:572

SINCE用法

since可以引导时间状语从句和原因状语从句。不能引导定语从句。引导时间状语从句一般放在后面。指从说话前某一时刻到说话时刻这一段时间。常用于完成时态。HehasbeenlivinginBeijingsincehewasfive.五岁后一直住在北京。IhavelearnedEnglishsinceyouleft.你走了以后我就学了英语。引导原因状语从句,主要是说明已知的必然性理由。只能放在前面引导,不能出现在后面。在后面常用as。Sinceyouareill,youhadbetternotgotoschool.既然病了,就别去学校了。另外记住,because常用来引导未知性必然理由。
2023-07-02 13:54:051

since的用法是什么?

since的用法主要有两点:一是表示“自从……以来”,二是表示“既然”之意。但如果只了解词的含义,而不了解其用法,在使用时就会造成错误。例如:I have not heard from him since I lived in Shanghai. 不少人会望文生义,将该句译为:“自从我住在上海以来,就再也没有收到他的信了。”而实际上这个句子的译文并非如此,那么正确的含义是什么呢? 下面谈谈since作连词引导时间状语从句的用法。 一、若since引导的状语从句的谓语动词是终止性的过去时,则从句表示的时间是“从动作开始的那一时刻起”。如: He has studied very hard since he came to our school.自从他来到我们学校,他学习就非常努力。 We have been missing them since they left here自从他们离开这里,我们就一直很想念他们。 这是最常见的一种用法,此处不再多述。 二、若since引导的状语从句的谓语动词是持续性动词或表示状态的动词的过去时时,则从句表示的时间是“从那持续动作或状态结束时算起”。如: I haven"t heard any noise since I slept. Sleep 为持续性动词,sleep的动作结束时,即“醒来”时,这句应译为“我醒后还未听到任何声音”。 John is now with his parents in New York, it is already three years since he was a teacher约翰现在和父母一起住在纽约,他不当教师已经三年了。 本文开始出现的那个句子就可以译为“自从我离开上海,就再也没有收到他的信。”这种译法常被人们误用,我们不妨再多举几个例子看看: How long is it since you lived in Shanghai?你离开(没住在)上海多久了? It is half a month since he was a League member.他退团(不当团员)半个月了。 It"s been quite some time since I was last in London我离开伦敦已很长时间了。 比较:He has written to me frequently since I was ill.自从我病愈以来,他屡次给我写信。(从句谓语为状态动词) He has written to me frequently since I fell ill.自从我生病以来,他就屡次给我写信。(从句谓语为终止性动词) 三、若since引导的状语从句的谓语为持续性动词的现在完成时,则表示动作和状态延续到现在(说话时刻),其表示的时间的起点应从动作发生之时算起。如: I haven"t heard from him since he has lived there。 这里has lived表示动作的持续性,时间的起点应从:“开始居住”时算起。因此此句可理解为“自从他(开始)住在那儿起,我就一直没收到他的来信”。 Since we have owned a car, we have gone camping every year。自从我们自己有了汽车,我们每年都去野营。 试比较:1. Since I"ve been at this school, we have had three headmasters.自从我到这所学校,我们已换了三个校长了。 Since I was at this school, they have had three headmasters.自从我离开这所学校,他们已换了三个校长了。 2.He has never been to see me since I have been ill. 自从我生病以来,他从未来看过我。 He has never been to see me since I was ill. 自从我病愈以来,他从未来看过我。 由此可见,since引导的从句持续动词的一般过去时和现在完成时所表示的意思恰好相反。换言之,前者以肯定的语法形式反映着否定的逻辑内容,而后者的形式与内容是一致的。 至于It is +一段时间+since…的句型与It has been +一段时间+since…意思相同。前者是规范说法,后者是口语说法。 应注意的是,在这种结构中,since引导的从句绝对不能用否定式的谓语动词来表示否定意义,下面两句都错了: It is a long time since he didn"t study English. It"s two months since you didn"t come to see me. 正确的说法为: It"s a long time since he studied English 他好久没学英语了。 You haven"t come to see me for two months. 你有两个月没来看我了。
2023-07-02 13:54:132

ever since和since的用法有什么区别?

since和since that没什么可以比较的,(有since但是没有since that,也就是说,since 可以有你所谓的“意思和用法”,而since that 不存在"意思和用法",换句话说,你应该把"since that"从脑海记忆里抹去,since和that可以碰到一起,不过那是巧合,但是经常发生,例如上面的例句,都出现了只需要理解Since 的意思就足够了很简单,Since只有两个简单意思,A,意为 “自从”(自从。。。起,或者从。。。起,从。。。(其实你可以看到都是一个意思),B,意为既然since that,无非就是从那时起,从那以后,那以后,从此,或这既然 那样.since that译成汉语是从那以后的意思,如,Since that, we became good frends.而since后面主要可以接两种情况,1,象that一样的表示时间的词,如since that day,since 1998;2,接一个从句,如Since he was out of work, he has learnt the important of study.ever since和since用法上的区别由于二者均表示从某时间点开始,其动词的延续性及时态需进行认真的辨识:1、前者无需考虑动词的延续性还是短暂性,都作“自从,或从…起”讲:I have got a few opportunities to catch up with my classmates ever since I was ill.2、后者则必须这两个问题,分以下三种情况:2.1 从句谓语动词为 be,且表成长某阶段或年龄时,则相当于 ever since:I have lived here (ever) since I was a child.2.2 从句谓语动词为延续动词,且为现在完成时,则无需介怀:She has never come to see me since I have lived in the city.2.3 从句谓语动词为延续动词,且时态是过去一般时,需在该动作结束后才能开始:I have made great progress since I was ill. (可不是自从生病了就进步了哈)3、最经典的语法例句,常见于小说:It is twenty years since I lived here.
2023-07-02 13:54:301

since用法。

since的用法  1) since +过去一个时间点 (如具体的年、月、日期、钟点、1980, last month, half past six)。  I have been here since 1989.   2) since +一段时间+ ago  I have been here since five months ago.  3) since +从句   Great changes have taken place since you left.  Considerable time has elapsed since we have been here.  4) It is +一段时间+ since从句  It is two years since I became a postgraduate student.since的用法主要有两点:一是表示“自从……以来”,二是表示“既然”之意。但如果只了解词的含义,而不了解其用法,在使用时就会造成错误。例如:I have not heard from him since I lived in Shanghai.不少人会望文生义,将该句译为:“自从我住在上海以来,就再也没有收到他的信了。”而实际上这个句子的译文并非如此,那么正确的含义是什么呢?下面谈谈since作连词引导时间状语从句的用法。一、若since引导的状语从句的谓语动词是终止性的过去时,则从句表示的时间是“从动作开始的那一时刻起”。如:He has studied very hard since he came to our school.自从他来到我们学校,他学习就非常努力。We have been missing them since they left here自从他们离开这里,我们就一直很想念他们。这是最常见的一种用法,此处不再多述。二、若since引导的状语从句的谓语动词是持续性动词或表示状态的动词的过去时时,则从句表示的时间是“从那持续动作或状态结束时算起”。如:I haven"t heard any noise since I slept. Sleep 为持续性动词,sleep的动作结束时,即“醒来”时,这句应译为“我醒后还未听到任何声音”。John is now with his parents in New York, it is already three years since he was a teacher约翰现在和父母一起住在纽约,他不当教师已经三年了。本文开始出现的那个句子就可以译为“自从我离开上海,就再也没有收到他的信。”这种译法常被人们误用,我们不妨再多举几个例子看看:How long is it since you lived in Shanghai?你离开(没住在)上海多久了?It is half a month since he was a League member.他退团(不当团员)半个月了。It"s been quite some time since I was last in London我离开伦敦已很长时间了。比较:He has written to me frequently since I was ill.自从我病愈以来,他屡次给我写信。(从句谓语为状态动词)He has written to me frequently since I fell ill.自从我生病以来,他就屡次给我写信。(从句谓语为终止性动词)三、若since引导的状语从句的谓语为持续性动词的现在完成时,则表示动作和状态延续到现在(说话时刻),其表示的时间的起点应从动作发生之时算起。如:I haven"t heard from him since he has lived there。这里has lived表示动作的持续性,时间的起点应从:“开始居住”时算起。因此此句可理解为“自从他(开始)住在那儿起,我就一直没收到他的来信”。Since we have owned a car, we have gone camping every year。自从我们自己有了汽车,我们每年都去野营。试比较:1. Since I"ve been at this school, we have had three headmasters.自从我到这所学校,我们已换了三个校长了。Since I was at this school, they have had three headmasters.自从我离开这所学校,他们已换了三个校长了。2.He has never been to see me since I have been ill. 自从我生病以来,他从未来看过我。He has never been to see me since I was ill. 自从我病愈以来,他从未来看过我。由此可见,since引导的从句持续动词的一般过去时和现在完成时所表示的意思恰好相反。换言之,前者以肯定的语法形式反映着否定的逻辑内容,而后者的形式与内容是一致的。至于It is +一段时间+since…的句型与It has been +一段时间+since…意思相同。前者是规范说法,后者是口语说法。应注意的是,在这种结构中,since引导的从句绝对不能用否定式的谓语动词来表示否定意义,下面两句都错了:It is a long time since he didn"t study English.It"s two months since you didn"t come to see me.正确的说法为:It"s a long time since he studied English 他好久没学英语了。You haven"t come to see me for two months. 你有两个月没来看我了。
2023-07-02 13:54:401

since的用法总结乐乐课堂

Since的用法一定要抓住它的词性。Since最常见的词性是两个,since作介词,Since后介词一定要跟名词,Since做连词,引导状语从句,它是一个从属的句子的部分,表达的是因为什么。 扩展资料   例句:   Polling has been heavy since 8 a.m.   从早上8点以来投票很踊跃。   He"s been there ever since you left!   自从你离开,他一直都在那儿!   They"ve been best mates since school.   他们从上学时期以来就是最要好的朋友。
2023-07-02 13:55:111

since的用法总结

since可作介词,since可作副词,since可引导原因状语从句,since引导时间状语从句。since作为介词后接某一确定的时间点,主句谓语动词是持续性动词,常与现在完成时态,现在完成进行时态或过去完成时态连用。since作为副词表示从过去以来,以后或到现在的情形或状态,常与现在完成时态连用。since引导原因状语从句作为连词,since可引导原因状语从句,表示因为,既然,鉴于。若since引导的状语从句的谓语是终止性动词的过去时,则从句表示的时间是,从动作开始的那一时刻"。
2023-07-02 13:55:471

since的用法

1. since conj. 自从…以来; 自从…的时候起; 既然; 因为 (后面加句子)表示自从......以来时,常常用完成时She"s a changed woman since she got that job.她自从得到了那份工作,变得判若两人。 I have known him ever since I was a child. 我自孩提时代起就已经认识他了.2. since adv. 以后,此后; 后来;He disappeared many years since.他多年以前就不知去向。Her husband died 10 years ago but she has since remarried.她丈夫于十年前去世, 但她后来又嫁人了。3.since prep. 从…以来; 自从…之后; 自 (后面加名词)I"ve been here since the end of June. 自6月末以来我就一直呆在这儿。I have not seen him since then.从那以后我再也没见过他。
2023-07-02 13:55:572

since的用法有哪些?

since的用法时态有:since+过去一个时间点(如具体的年、月、日期、钟点、1980,last month,half past six)。since+一段时间+ago。since+从句。It is+一段时间+since从句等。基本字义since英[su026ans]美[su026ans]prep.自从;在…之后;自…后conj.自从…以来;自从…以后;自…以后;在…之后;因为;既然adv.从此;此后;后来;之后扩展资料:用法1)since+过去一个时间点(如具体的年、月、日期、钟点、1980,last month,half past six)。例如:I have been here since 1989.1989起,我一直在这儿。2)since+一段时间+ago.例如:I have been here since five months ago. 我在这儿,已经有五个月了。3)since+从句。例如:Great changes have taken place since you left. 你走后,变化可大了。Great changes have taken place since we were here.我们走后,变化可大了。4)It is+一段时间+since从句。例如:It is two years since I became a postgraduate student. 我考上研究生有两年了。
2023-07-02 13:56:291

since的用法 越具体越好

这是我的教案,供你参考:since的用法:译作“自从…以来” (1)接时间点:如 I have stayed in that country since 1995. 要求:谓v.用现在完成时,而且须是延续性动词。 (2)接一段时间 + ago:如 They have lived in that house since two years ago. 要求:谓v.用现在完成时,而且须是延续性动词。 (3)接时间状语从句:如 I have loved her since I met her last time. / Lily has stayed at home since she left school. 要求:主句的谓v.用现在完成时,而且须是延续性动词;从句的谓v.用一般过去时,而且须是终止性动词。 (4)用于句型“It"s / It has been + 一段时间 + since + 时间状语从句”中,译作“自从…以来, 已经…(时间)了”。如 It"s / has been three months since he moved to this city. 要求:主句的谓v.用一般现在时或现在完成时;从句的谓v.用一般过去时,而且须是终止性动词。 (5)用于句型“一段时间 + has passed since + 时间状语从句”中,译作“自从…以来, …(时间)已经过去了”。如上个例句还可写成:Three months has passed since he moved to this city. 要求:主句的谓v.用现在完成时,而且动词必须是has passed;从句的谓v.用一般过去时,而且须是终止性动词。 (6)注:当since用于否定句时,主句的谓v.可以是终止性动词。如 He hasn"t seen the film since last month. (7)相关词组:“从那时起”:ever since、since then、from then on. 注:ever since作为一个词组,放句尾可单独使用。如I have given up smoking ever since. 另外,还可在since后接句子。since前加ever,只是加重语气而已。如 I have given up smoking ever since I caught a bad cough. (8) since还可引导原因状语从句,译作“由于;因为”,相当于because。如 Since he was lazy, he didn"t finish his homework.希望我的回答能够帮到你,望采纳!祝你学习进步,天天快乐。O(∩_∩)O
2023-07-02 13:56:462

关于 SINCE 的全部用法

since的用法:译作“自从…以来” (1)接时间点:如 I have stayed in that country since 1995.要求:谓v.用现在完成时,而且须是延续性动词. (2)接一段时间 + ago:如 They have lived in that house since two years ago.要求:谓v.用现在完成时,而且须是延续性动词. (3)接时间状语从句:如 I have loved her since I met her last time./ Lily has stayed at home since she left school.要求:主句的谓v.用现在完成时,而且须是延续性动词;从句的谓v.用一般过去时,而且须是终止性动词. (4)用于句型“It"s / It has been + 一段时间 + since + 时间状语从句”中,译作“自从…以来,已经…(时间)了”.如 It"s / has been three months since he moved to this city.要求:主句的谓v.用一般现在时或现在完成时;从句的谓v.用一般过去时,而且须是终止性动词. (5)用于句型“一段时间 + has passed since + 时间状语从句”中,译作“自从…以来,… (时间)已经过去了”.如上个例句还可写成:Three months has passed since he moved to this city.要求:主句的谓v.用现在完成时,而且动词必须是has passed;从句的谓v.用一般过去时,而且须是终止性动词. (6)注:当since用于否定句时,主句的谓v.可以是终止性动词.如 He hasn"t seen the film since last month. (7)相关词组:“从那时起”:ever since、since then、from then on. 注:ever since作为一个词组,放句尾可单独使用.如I have given up smoking ever since.另外,还可在since后接句子.since前加ever,只是加重语气而已.如 I have given up smoking ever since I caught a bad cough. (8) since还可引导原因状语从句,译作“由于;因为”,相当于because.如 Since he was lazy,he didn"t finish his homework.
2023-07-02 13:56:551

since的用法。

since的用法:一.Since作为介词,后接某一确定的时间点,主句谓语动词是持续性动词,常与现在完成时态、现在完成进行时态或过去完成时态连用。例如: 1、He left the village in 1982 and I haven"t seen him since then.1982年他离开这个村子,从那以后我再没见过他。 2、She"s been working in a bank since leaving school.她中学毕业后就一直在一家银行工作。 3.He had spoken to her only once since the party. 自从那次聚会以来,他只跟她说过一次话。 二.Since作为副词,表示从过去以来、以后或到现在的情形或状态,常与现在完成时态连用。例如: 1.He left home two weeks ago and we haven"t heard from him since. 他两周前离开了家,到现在我们一直没有他的消息。 2.He came to Zhenjiang 6 years ago and has lived here (ever) since.他6年前来到镇江,从此便住在这里。 三.since引导原因状语从句 作为连词,since可引导原因状语从句,表示因为;既然;鉴于:例如: 1. He didn"t come since he was busy.他因为忙,所以没有来。 2. Since this method doesn"t work,let"s try anoter.既然这种方法不行,我们就试用另一种吧。 四.Since引导时间状语从句 1.若since引导的状语从句的谓语是终止性动词的过去时,则从句表示的时间是“从动作开始的那一时刻起”。例如: He has studied very hard since he came to our school.自从他来到我们学校,他学习就非常努力。 We have been missing them since they left here自从他们离开这里,我们就一直很想念他们。 2.若since引导的状语从句的谓语动词是持续性动词或表示状态动词的过去时时,则从句表示的时间是“从动作或状态结束时算起”。例如: I haven"t heard any noise since I slept. Sleep 为持续性动词,sleep的动作结束时,即“醒来”时,所以这句应译为“我醒后还未听到任何声音”。 3.若since引导的状语从句的谓语为持续性动词的现在完成时,则表示动作和状态延续到现在(说话时刻),其表示的时间的起点应从动作发生之时算起。例如:I haven"t heard from him since he has lived there。 这里has lived表示动作的持续性,时间的起点应从:“开始居住”时算起。因此此句可理解为“自从他(开始)住在那儿起,我就一直没收到他的来信”。 五.Since在特殊句型中的应用 句型I:“It is (has been)+时间+since+持续性动词的过去时”,表示“自从……以来到现在已有多久。”例如: It has been quite some time since I was last in London.我上次离开伦敦至今颇有一段时间了。句型II:“It was+时间+since+持续性动词的过去完成时”,表示“从……到过去某时间点以来”,例如:It was three years since we had been here.那时我们在这已呆了三年。
2023-07-02 13:57:0412

since用法有哪些

1、现在完成(进行)时态+since+短暂动词的一般过去时。表示从句动作"开始” 以来,主句活动在持续。例:I have worked in this company since I graduated.翻译:自从我毕业以来,我就在这家公司上班。2、现在完成(进行)时态+since+延续动词的般过去时。表示从句动作“结束" 以来,主句活动在持续。例:It has been / is a long time since Mark lived here.翻译:马克早就不在这儿住了。3、现在完成(进行)时态+since+延续动词的现在完成时。表示从句动作"开始"以来,主句活动在持续。例:He hasn"t contacted me since I have worked inthat company.翻译:自从我开始在那家公司工作后,他就再没有和我联系过。since一、含义:conj. 因为;既然;自从。prep. 自从。adv. 此后。二、用法since用作介词的意思是“从…以来,自从…之后”,其宾语常指过去的一个时间点,其含义通常指持续到说话时刻的动作或情况开始于什么时候。since之后常接名词、动名词作其宾语,since then意为“从那以后”。since引导时间状语从句时,若主句表示目前的状况是由于过去某一件事所造成的后果或影响时,其谓语动词也可以用一般现在时;有时候,通过上下文,可以看出从句的动作是延续到过去某个时间,这时主句的谓语动词要用过去完成时;如果主句的动作是从过去某时一直延续到现在,主句可用现在完成进行时。Bows and arrows have long since been out of use.弓箭很早以前就没人使用了。扩展资料:近义词:ago。ago一、含义:adv. 以前。二、用法ago是表示时间的副词,其基本意思是“以前”,表示事情发生在“从此刻算起若干时间以前”,也可以表示“事情发生距现在有多长时间”。简言之,ago的时间参照点是现在。ago在句中一般不单独使用,须与表示时间的名词或副词搭配使用,且要放在它所修饰词的后面。The dinosaurs disappeared long ago.恐龙很久以前就绝种了。
2023-07-02 13:57:351

since的用法总结

以下是我为大家整理的since的用法 总结 ,希望可以帮助到你们提高英语水平! since释义 prep.从…以来; 自从…之后; 自从; adv.以后,此后; 后来; (距今几年)以前; (从那时候起几年)以前 conj.自从…以来; 自从…的时候起; 既然; 因为  since的用法 一.Since作为介词 后接某一确定的时间点,主句谓语动词是持续性动词,常与现在完成时态、现在完成进行时态或过去完成时态连用。 例如: 1.He left the village in 1982 and I haven"t seen him since then.1982年他离开这个村子,从那以后我再没见过他。 2.She"s been working in a bank since leaving school.她中学 毕业 后就一直在一家银行工作。 3.He had spoken to her only once since the party. 自从那次聚会以来,他只跟她说过一次话。 二.Since作为副词 表示从过去以来、以后或到现在的情形或状态,常与现在完成时态连用。 例如: 1.He left home two weeks ago and we haven"t heard from him since. 他两周前离开了家,到现在我们一直没有他的消息。 2.He came to Zhenjiang 6 years ago and has lived here (ever) since.他6年前来到镇江,从此便住在这里。 三.since引导原因状语从句 作为连词,since可引导原因状语从句,表示因为;既然;鉴于:例如: 1.He didn"t come since he was busy.他因为忙,所以没有来。 2.Since this method doesn"t work,let"s try anoter.既然这种 方法 不行,我们就试用另一种吧。 四.Since引导时间状语从句 1.若since引导的状语从句的谓语是终止性动词的过去时,则从句表示的时间是“从动作开始的那一时刻起”。例如: He has studied very hard since he came to our school.自从他来到我们学校,他学习就非常努力。 We have been missing them since they left here自从他们离开这里,我们就一直很想念他们。 2.若since引导的状语从句的谓语动词是持续性动词或表示状态动词的过去时时,则从句表示的时间是“从动作或状态结束时算起”。例如: I haven"t heard any noise since I slept. Sleep 为持续性动词,sleep的动作结束时,即“醒来”时,所以这句应译为“我醒后还未听到任何声音”。 3.若since引导的状语从句的谓语为持续性动词的现在完成时,则表示动作和状态延续到现在(说话时刻),其表示的时间的起点应从动作发生之时算起。例如:I haven"t heard from him since he has lived there。 这里has lived表示动作的持续性,时间的起点应从:“开始居住”时算起。因此此句可理解为“自从他(开始)住在那儿起,我就一直没收到他的来信”。 五.Since在特殊句型中的应用 句型I:“It is (has been)+时间+since+持续性动词的过去时”,表示“自从……以来到现在已有多久。”例如: It has been quite some time since I was last in London.我上次离开伦敦至今颇有一段时间了。 句型II:“It was+时间+since+持续性动词的过去完成时”,表示“从……到过去某时间点以来”,例如:It was three years since we had been here.那时我们在这已呆了三年。 since的用法例句 (表示时间)从…以来; 自从…之后 I have lived here since January. 自一月份以来, 我一直住在这里。 He had seen her only once since the meeting. 自从那次会议以来, 他只见过她一次。 He"s been working in a bank since leaving school. 自从毕业后, 他就一直在一家银行工作。 I have not seen him since then. 从那以后我再也没见过他。 从过去某时间以来[以后, 到现在] He disappeared many years since. 他多年以前就不知去向。 Her husband died 10 years ago but she has since remarried. 她丈夫于十年前去世, 但她后来又嫁人了。 I"ve long since forgotten what our quarrel was about. 我早就忘掉我们为什么吵架了。 It was not long since that I returned. 我是在不久前回来的。 He came to London 3 years ago and has lived here ever since. 他三年前来到伦敦, 此后就一直住在这里。 自从(过去某事)以来[以后, 到现在] Since I left college, I have not seen him. 自从我离开大学以后, 就没有见过他了。 They have never been to see me since I was ill. 自从我生病之后, 他们一直没来看过我。 Since I have owned a bicycle, I have gone to school by it every day. 自从我有了一辆自行车后, 我每天骑车上学。 因为; 既然; 由于 Since it is late I shall go home now. 由于时间晚了, 我现在要回家了。 Since you are so sure of it he"ll believe you. 既然你对此这么有把握, 他会相信你的。 since的用法练习题 1. He has ____ the army for ten years and now is an officer. A.gone into B.joined in C.been in D.come into 答案:C.(其余三组动词均为瞬间动词,不能和段时间连用。) 2. You don"t have to describe her. I _____ her several times. A.had met B.have met C.met D.meet 答案:B. I _____ on the door for ten minutes now without an answer. A.was knocking B.am knocking C.knocking D.have been knocking. 答案:D。 因为该句是说到目前为止已经敲了10分钟了,但没人应答。动作一直持续十分钟。因此完成进行时态是最合适的。 for和since的用法区别 1,Since +时间点,具体时间 “自从、、、、以来,从、、、以后” 用来说明动作起始时间 I have been in Beijing since 2010. 2,For + 时间段,用来说明动作延续时间长度,因此句中的谓语动词,也应该是延续性动词。 I have been in Beijing for one year。 We have learnt English for about three years. I have been here for 3 days. (对) I have arrived here for 3 days.(误) for和since的用法例句 例句比较 he has been dead for three years he has been dead since three years ago He has studied English since 2003 He has studied English since he was ten years old for和since的用法练习题 用since和for填空 1) ______ two years2) _______ two years ago3) _______ last month 4) ______ 19995) _______ yesterday6) _______ 4 o"clock 7) ______ 4 hours8) _______ an hour ago9) _______ we were children 10) _____ lunch time11) ______ she left here 12). He has lived in Nanjing ________ the year before last. 13). I"ve known him __________ we were children. 14). Our teacher has studied Japanese _________ three years. 15). She has been away from the city ___________ about ten years. 16). It"s about ten years __________ she left the city. 选择题 1. Three years ________since I ________ you last time. A. have passed; metB. has passed; metC. passed; have met 2. He has been here _______ he left his hometown. A. since B. in C. for 3. —He ________the English-Chinese dictionary for about twenty years,but it is still new. —What a careful man! A. has bought B. has borrowed C. has had 4. ---When did China _____ the WTO?---China _____ the WTO for several years. A. join; has been a member of B. join; has joined C. take part in; have been in 5. How long have you _____ the book? A. bought B. borrowed C. kept 6. How time flies! Several years _______ since we started our middle school life. We will keep the pleasant experiences in our minds. A. have passed B. has passed C.will pass 7. Mr Fan _____ this bike in 2005. He ______ it for 10 years. A.bought, has bought B.has bought, has had C. bought, has had 8. He ___ in our school for 20 years and he ___ here in 1977. ?A. has taught; came B. has taught; has come C. taught; came D. has teached; has came 9.They are late. The film ___ for five minutes. ?A. has begun B. has started C. has been on D. began 10.We have been friends since _____. A. five years B.five years ago C. five years before since then的用法 since then意为 "从那时以来",通常与动词的现在完成时连用,指从过去某一时刻起到现在为止的一段时间。 Since then 前后各接什么时态 Since then 前后一般接现在完成时,从那以后,现在完成时表示过去的某件事对现在还有影响, 现在完成时的标志性时间状语already , ever , never , yet , just , before, still , lately ,since , for a long time ,up to now, until,so far,in the last few years/weeks/mouths , till now,recently since then的用法例句 Since then, he has developed another bad habit. 从那以后,他养成了另一种坏习惯。 He hasn"t come close to those numbers since then. 自那以后,他从没有达到那赛季的表现。 Ah, times are greatly changed since then!" “啊,从那时起,世道可变得多厉害呀!” Exactly three years have passed since then. 从那时起,整整3年过去了。 ever since释义 自从;从那时到现在;自…以后;从…起 ever since的用法 1.ever since 的结构:(作为连词)=since 完成时态---- ever since +主+动词简单过去式 例:I have known him ever since he was a child. ?他从小我就认识他了。 ?这种用法同since 差不多,不过 ever since 比 since 用得少。 再如:We have lived in Shanghai ever since we came to China.(自从我们来到中国之后就住在上海。) ? 2.以上所说的 ever since 作为连词。 ? ever since 也可作为副词,解释“此后”(就一直...) ? 例: 1)He fell ill at Christmas and has been ill ever since. ?他在 圣诞节 生病了此后就一直不适。(has + be ill) 2)He left home last year and has been away ever since. ?他去年离家走了,此后一直在外面。(has + be away) ?3)He fell off his horse a week ago and has been in bed ever since. ?一周前他从马背上跌下来,从那以后就一直躺在床上。 ?4)He went to Turkey in 1950 and has lived there ever since. ?他在1950年去土耳其,此后就一直住在那里。 ? 3. has not been able to 这实际上就是 be able to 加上 have 罢了。 所谓 be able to 就是“有可能”不是“能”(can)。如果一直,始终没有可能就是has not been able to ,这很简单。 ?如果 it has not been easy. 就是“那件事一直不是轻而易举的。”完成时态不一定都解释为“已经”,有时要解释为“一直”。 ?相关词汇:?have trouble with sb. 与某人发生了纠纷 ?return home 不可用 return to home ?at night 不可用 at the night ?because of 由于 ?even once 即使是一次 ?have effect 产生效果 ?turn ... to 把···变为 ever since的用法例句 1、He"s been there ever since you left! 自从你离开后他就一直在那里! 2、I simply gave in to him, and I"ve regretted it ever since 我就向他屈服了,从那以后我一直后悔。 3、I"ve had the hots for him ever since he came to college. 自从他来上大学后,我就对他春心萌动。 4、The girl has grown prettier than ever since I saw her a year ago. 一年不见,小姑娘出落得更漂亮了 since的用法总结相关 文章 : 1. 2. Since的用法 3. as…as…句型的用法小结怎么用 4. hope的用法总结 5. 英语语法大全总结 6. 介词的用法归纳有哪些需要注意的 7. 重点词汇until用法总结 8. 初中英语8大时态总结
2023-07-02 13:57:521

英语since的用法总结

英语since的用法总结如下:1、since用作介词,意为“自…以来,自从”。I haven"t heard from her since last year.自去年以来我没有受到她的来信。2、用作副词,意为“从那时以来“。I saw him last year, but we haven"t met since.我在去年见过他,从那以后我们就没有见面。3.、用作连词,意为”从…以来;由于;既然“等。He has been ill since I saw him last time.从上次我见他以来,他一直在生病。Since you have finished the work, let"s go to the park.既然你已把工作做完了,我们去公园吧。since表示原因时,语气比弱,表示的原因是对方已知的,所说明的有时不是根本的或直接的原因,是附带的原因,一般把它译成“既然,鉴于“。since引导的从句往往放在主句之前。The fisherman said, “Since I must die, I must…”渔夫说:”既然我非死不可,那我就死好了…“
2023-07-02 13:57:591

since的用法时态 使用方法有哪些

since一般用于“现在完成时”或“一般现在时”;since表示“自从”时,通常与现在完成时连用;主句表示“多长时间”时,动词可用一般现在时(也可用现在完成时)。 since的用法 since用作连词作“自从…以来〔以后或,现在〕”解时,引导时间状语从句,在主句是现在完成时的情况下,如果since从句中谓语动词用一般过去时,则表示动作或状态的完成,计时的起点是动作或状态完成的那一时刻,在语意上,非延续性动词的句子与其词意一致,含有肯定的意味,而延续性动词的句子与其词意恰好相反,含有否定的意味; 如果since从句用延续性动词的现在完成时,则表示该动作或状态一直延续到现在时刻,而且可以包括现在时刻在内,时间的起点应从动作发生之时算起,句子的意思和动词的词意一致,具有肯定意味; 在现代英语中,延续性动词的一般过去时有时也可表示动作或状态延续到现在时刻,时间的起点从动作或状态发生之时算起,不过这类句子多半要用ever来加强since的语意,然而, since从句中的谓语动词如果是非延续性动词,即使用ever来加强语意,也绝不意味着从句动作有什么延续性。 since的例句 I"veworn glasses since my childhood. 我从小就戴眼镜。 The works have been closed since January. 一月份以来这些厂就关闭了。 He"s put on a lot of weight since he gave up smoking. 他戒烟后体重增加了许多。 It"s a long time since I met you last. 好久不见了。 It"s just a week since we arrived here. 我们到这里才一个星期。
2023-07-02 13:58:181

since的用法归纳总结

since的用法归纳总结如下:1、since用作介词,意为“自…以来,自从”。I haven"t heard from her since last year.自去年以来我没有受到她的来信。2、用作副词,意为“从那时以来“。I saw him last year, but we haven"t met since.我在去年见过他,从那以后我们就没有见面。3.、用作连词,意为”从…以来;由于;既然“等。He has been ill since I saw him last time.从上次我见他以来,他一直在生病。Since you have finished the work, let"s go to the park.既然你已把工作做完了,我们去公园吧。since表示原因时,语气比弱,表示的原因是对方已知的,所说明的有时不是根本的或直接的原因,是附带的原因,一般把它译成“既然,鉴于“。since引导的从句往往放在主句之前。The fisherman said, “Since I must die, I must…”渔夫说:”既然我非死不可,那我就死好了…
2023-07-02 13:58:251

since的用法是什么?

主句用现在完成时,引导的部分用一般过去时
2023-07-02 13:59:391

since的用法时态有哪些?

1、现在完成(进行)时态+since+短暂动词的一般过去时。表示从句动作"开始” 以来,主句活动在持续。例:I have worked in this company since I graduated.翻译:自从我毕业以来,我就在这家公司上班。2、现在完成(进行)时态+since+延续动词的般过去时。表示从句动作“结束" 以来,主句活动在持续。例:It has been / is a long time since Mark lived here.翻译:马克早就不在这儿住了。3、现在完成(进行)时态+since+延续动词的现在完成时。表示从句动作"开始"以来,主句活动在持续。例:He hasn"t contacted me since I have worked inthat company.翻译:自从我开始在那家公司工作后,他就再没有和我联系过。since一、含义:conj. 因为;既然;自从。prep. 自从。adv. 此后。二、用法since用作介词的意思是“从…以来,自从…之后”,其宾语常指过去的一个时间点,其含义通常指持续到说话时刻的动作或情况开始于什么时候。since之后常接名词、动名词作其宾语,since then意为“从那以后”。since引导时间状语从句时,若主句表示目前的状况是由于过去某一件事所造成的后果或影响时,其谓语动词也可以用一般现在时;有时候,通过上下文,可以看出从句的动作是延续到过去某个时间,这时主句的谓语动词要用过去完成时;如果主句的动作是从过去某时一直延续到现在,主句可用现在完成进行时。Bows and arrows have long since been out of use.弓箭很早以前就没人使用了。扩展资料:近义词:ago。ago一、含义:adv. 以前。二、用法ago是表示时间的副词,其基本意思是“以前”,表示事情发生在“从此刻算起若干时间以前”,也可以表示“事情发生距现在有多长时间”。简言之,ago的时间参照点是现在。ago在句中一般不单独使用,须与表示时间的名词或副词搭配使用,且要放在它所修饰词的后面。The dinosaurs disappeared long ago.恐龙很久以前就绝种了。
2023-07-02 13:59:501

since的用法

这是我的教案,供你参考:since的用法:译作“自从…以来” (1)接时间点:如 I have stayed in that country since 1995. 要求:谓v.用现在完成时,而且须是延续性动词。 (2)接一段时间 + ago:如 They have lived in that house since two years ago. 要求:谓v.用现在完成时,而且须是延续性动词。 (3)接时间状语从句:如 I have loved her since I met her last time. / Lily has stayed at home since she left school. 要求:主句的谓v.用现在完成时,而且须是延续性动词;从句的谓v.用一般过去时,而且须是终止性动词。 (4)用于句型“It"s / It has been + 一段时间 + since + 时间状语从句”中,译作“自从…以来, 已经…(时间)了”。如 It"s / has been three months since he moved to this city. 要求:主句的谓v.用一般现在时或现在完成时;从句的谓v.用一般过去时,而且须是终止性动词。 (5)用于句型“一段时间 + has passed since + 时间状语从句”中,译作“自从…以来, …(时间)已经过去了”。如上个例句还可写成:Three months has passed since he moved to this city. 要求:主句的谓v.用现在完成时,而且动词必须是has passed;从句的谓v.用一般过去时,而且须是终止性动词。 (6)注:当since用于否定句时,主句的谓v.可以是终止性动词。如 He hasn"t seen the film since last month. (7)相关词组:“从那时起”:ever since、since then、from then on. 注:ever since作为一个词组,放句尾可单独使用。如I have given up smoking ever since. 另外,还可在since后接句子。since前加ever,只是加重语气而已。如 I have given up smoking ever since I caught a bad cough. (8) since还可引导原因状语从句,译作“由于;因为”,相当于because。如 Since he was lazy, he didn"t finish his homework.希望我的回答能够帮到你,望采纳!祝你学习进步,天天快乐。O(∩_∩)O
2023-07-02 14:00:101

since的用法时态 since的时态用法

1、since,副词 adv(常用于现在完成时或过去完成时),介词(常用于现在完成时或过去完成时)。 2、since后面从句用一般过去时。例:I‘ve made great progress in English since I came to this school.自从我来到这个学校以来;我在英语上取得了巨大的进步。 3、since用作连词作“自从…以来〔以后或,现在〕”解时,引导时间状语从句,在主句是现在完成时的情况下,如果since从句中谓语动词用一般过去时,则表示动作或状态的完成,计时的起点是动作或状态完成的那一时刻,在语意上,非延续性动词的句子与其词意一致,含有肯定的意味,而延续性动词的句子与其词意恰好相反,含有否定的意味; 4、如果since从句用延续性动词的现在完成时,则表示该动作或状态一直延续到现在时刻,而且可以包括现在时刻在内,时间的起点应从动作发生之时算起,句子的意思和动词的词意一致,具有肯定意味; 5、在现代英语中,延续性动词的一般过去时有时也可表示动作或状态延续到现在时刻,时间的起点从动作或状态发生之时算起,不过这类句子多半要用ever来加强since的语意,然而, since从句中的谓语动词如果是非延续性动词,即使用ever来加强语意,也绝不意味着从句动作有什么延续性。
2023-07-02 14:00:171

since表原因的用法总结

since表示原因时,语气比because弱,表示的原因是对方已知的,所说明的有时不是根本的或直接的原因,是附带的原因,一般把它译成“既然;鉴于”。since引导的从句往往放在主句之前。 扩展资料   since是一个用法极活跃的.词,现归纳如下:   1. 用作介词,意思是“从……以来;自从”,常与完成时连用。 I haven"t heard from her since last year. 自去年以来我没有收到她的来信。   2. 用作副词,意思是“从那时以来”。   I saw him last year, but we haven"t met since. 我在去年见到过他,从那以后我们就没有见面。   3. 用作连词,意思是“从……以来;由于;既然”等。 He has been ill since I saw him last. 从上次我见他以来,他一直在生病。   Since you have finished the work, let"s go to the park. 既然你已把工作做完了,我们去公园吧。
2023-07-02 14:00:241

关于 SINCE 的全部用法

since的用法:译作“自从…以来”(1)接时间点:如Ihavestayedinthatcountrysince1995.要求:谓v.用现在完成时,而且须是延续性动词。(2)接一段时间+ago:如Theyhavelivedinthathousesincetwoyearsago.要求:谓v.用现在完成时,而且须是延续性动词。(3)接时间状语从句:如IhavelovedhersinceImetherlasttime./Lilyhasstayedathomesincesheleftschool.要求:主句的谓v.用现在完成时,而且须是延续性动词;从句的谓v.用一般过去时,而且须是终止性动词。(4)用于句型“It"s/Ithasbeen+一段时间+since+时间状语从句”中,译作“自从…以来,已经…(时间)了”。如It"s/hasbeenthreemonthssincehemovedtothiscity.要求:主句的谓v.用一般现在时或现在完成时;从句的谓v.用一般过去时,而且须是终止性动词。(5)用于句型“一段时间+haspassedsince+时间状语从句”中,译作“自从…以来,…(时间)已经过去了”。如上个例句还可写成:Threemonthshaspassedsincehemovedtothiscity.要求:主句的谓v.用现在完成时,而且动词必须是haspassed;从句的谓v.用一般过去时,而且须是终止性动词。(6)注:当since用于否定句时,主句的谓v.可以是终止性动词。如Hehasn"tseenthefilmsincelastmonth.(7)相关词组:“从那时起”:eversince、sincethen、fromthenon.注:eversince作为一个词组,放句尾可单独使用。如Ihavegivenupsmokingeversince.另外,还可在since后接句子。since前加ever,只是加重语气而已。如IhavegivenupsmokingeversinceIcaughtabadcough.(8)since还可引导原因状语从句,译作“由于;因为”,相当于because。如Sincehewaslazy,hedidn"tfinishhishomework.
2023-07-02 14:00:401

英语中since的用法是什么

Since 用法小结 一.Since作为介词,后接某一确定的时间点,主句谓语动词是持续性动词,常与现在完成时态、现在完成进行时态或过去完成时态连用。例如: 1、He left the village in 1982 and I haven"t seen him since then.1982年他离开这个村子,从那以后我再没见过他。 2、She"s been working in a bank since leaving school.她中学毕业后就一直在一家银行工作。 3.He had spoken to her only once since the party. 自从那次聚会以来,他只跟她说过一次话。 二.Since作为副词,表示从过去以来、以后或到现在的情形或状态,常与现在完成时态连用。例如: 1.He left home two weeks ago and we haven"t heard from him since. 他两周前离开了家,到现在我们一直没有他的消息。 2.He came to Zhenjiang 6 years ago and has lived here (ever) since.他6年前来到镇江,从此便住在这里。 三.since引导原因状语从句 作为连词,since可引导原因状语从句,表示因为;既然;鉴于:例如: 1. He didn"t come since he was busy.他因为忙,所以没有来。 2. Since this method doesn"t work, let"s try another.既然这种方法不行,我们就试用另一种吧。 四.Since引导时间状语从句 1.若since引导的状语从句的谓语是终止性动词的过去时,则从句表示的时间是“从动作开始的那一时刻起”。例如: He has studied very hard since he came to our school.自从他来到我们学校,他学习就非常努力。 We have been missing them since they left here自从他们离开这里,我们就一直很想念他们。 2.若since引导的状语从句的谓语动词是持续性动词或表示状态动词的过去时时,则从句表示的时间是“从动作或状态结束时算起”。例如: I haven"t heard any noise since I slept. Sleep 为持续性动词,sleep的动作结束时,即“醒来”时,所以这句应译为“我醒后还未听到任何声音”。 3.若since引导的状语从句的谓语为持续性动词的现在完成时,则表示动作和状态延续到现在(说话时刻),其表示的时间的起点应从动作发生之时算起。例如:I haven"t heard from him since he has lived there。 这里has lived表示动作的持续性,时间的起点应从:“开始居住”时算起。因此此句可理解为“自从他(开始)住在那儿起,我就一直没收到他的来信”。 五.Since在特殊句型中的应用 句型I:“It is (has been)+时间+since+持续性动词的过去时”,表示“自从……以来到现在已有多久。”例如: It has been quite some time since I was last in London.我上次离开伦敦至今颇有一段时间了。句型II:“It was+时间+since+持续性动词的过去完成时”,表示“从……到过去某时间点以来”,例如:It was three years since we had been here.那时我们在这已呆了三年。
2023-07-02 14:00:524

since的用法

这是我的教案,供你参考:since的用法:译作“自从…以来” (1)接时间点:如 I have stayed in that country since 1995. 要求:谓v.用现在完成时,而且须是延续性动词。 (2)接一段时间 + ago:如 They have lived in that house since two years ago. 要求:谓v.用现在完成时,而且须是延续性动词。 (3)接时间状语从句:如 I have loved her since I met her last time. / Lily has stayed at home since she left school. 要求:主句的谓v.用现在完成时,而且须是延续性动词;从句的谓v.用一般过去时,而且须是终止性动词。 (4)用于句型“It"s / It has been + 一段时间 + since + 时间状语从句”中,译作“自从…以来, 已经…(时间)了”。如 It"s / has been three months since he moved to this city. 要求:主句的谓v.用一般现在时或现在完成时;从句的谓v.用一般过去时,而且须是终止性动词。 (5)用于句型“一段时间 + has passed since + 时间状语从句”中,译作“自从…以来, …(时间)已经过去了”。如上个例句还可写成:Three months has passed since he moved to this city. 要求:主句的谓v.用现在完成时,而且动词必须是has passed;从句的谓v.用一般过去时,而且须是终止性动词。 (6)注:当since用于否定句时,主句的谓v.可以是终止性动词。如 He hasn"t seen the film since last month. (7)相关词组:“从那时起”:ever since、since then、from then on. 注:ever since作为一个词组,放句尾可单独使用。如I have given up smoking ever since. 另外,还可在since后接句子。since前加ever,只是加重语气而已。如 I have given up smoking ever since I caught a bad cough. (8) since还可引导原因状语从句,译作“由于;因为”,相当于because。如 Since he was lazy, he didn"t finish his homework.希望我的回答能够帮到你,望采纳!祝你学习进步,天天快乐。O(∩_∩)O
2023-07-02 14:01:311

since前后该用什么时态啊?

since如果解释为“自从...以来”,引导时间状语从句时,则其前面的主句用现在完成时,其后的从句用一般过去时。如:I‘ve made great progress in English since I came to this school.自从我来到这个学校以来,我在英语上取得了巨大的进步。
2023-07-02 14:01:413

关于 SINCE 的全部用法

since的用法:译作“自从…以来” (1)接时间点:如 I have stayed in that country since 1995.要求:谓v.用现在完成时,而且须是延续性动词. (2)接一段时间 + ago:如 They have lived in that house since two years ago.要求:谓v.用现在完成时,而且须是延续性动词. (3)接时间状语从句:如 I have loved her since I met her last time./ Lily has stayed at home since she left school.要求:主句的谓v.用现在完成时,而且须是延续性动词;从句的谓v.用一般过去时,而且须是终止性动词. (4)用于句型“It"s / It has been + 一段时间 + since + 时间状语从句”中,译作“自从…以来,已经…(时间)了”.如 It"s / has been three months since he moved to this city.要求:主句的谓v.用一般现在时或现在完成时;从句的谓v.用一般过去时,而且须是终止性动词. (5)用于句型“一段时间 + has passed since + 时间状语从句”中,译作“自从…以来,… (时间)已经过去了”.如上个例句还可写成:Three months has passed since he moved to this city.要求:主句的谓v.用现在完成时,而且动词必须是has passed;从句的谓v.用一般过去时,而且须是终止性动词. (6)注:当since用于否定句时,主句的谓v.可以是终止性动词.如 He hasn"t seen the film since last month. (7)相关词组:“从那时起”:ever since、since then、from then on. 注:ever since作为一个词组,放句尾可单独使用.如I have given up smoking ever since.另外,还可在since后接句子.since前加ever,只是加重语气而已.如 I have given up smoking ever since I caught a bad cough. (8) since还可引导原因状语从句,译作“由于;因为”,相当于because.如 Since he was lazy,he didn"t finish his homework.
2023-07-02 14:02:121

英语问题 since在表示 因为 时的用法

since的用法:译作“自从…以来”1)接时间点:如 I have stayed in that country since 1995. 要求:谓v.用现在完成时,而且须是延续性动词。2)接一段时间 + ago:如 They have lived in that house since two years ago. 要求:谓v.用现在完成时,而且须是延续性动词。3)接时间状语从句:如 I have loved her since I met her last time. / Lily has stayed at home since she left school. 要求:主句的谓v.用现在完成时,而且须是延续性动词;从句的谓v.用一般过去时,而且须是终止性动词。 4)用于句型“It"s / It has been + 一段时间 + since + 时间状语从句”中,译作“自从…以来, 已经…(时间)了”。如 It"s / has been three months since he moved to this city. 要求:主句的谓v.用一般现在时或现在完成时;从句的谓v.用一般过去时,而且须是终止性动词。5)用于句型“一段时间 + has passed since + 时间状语从句”中,译作“自从…以来, …(时间)已经过去了”。如上个例句还可写成:Three months has passed since he moved to this city. 要求:主句的谓v.用现在完成时,而且动词必须是has passed;从句的谓v.用一般过去时,而且须是终止性动词。6)注:当since用于否定句时,主句的谓v.可以是终止性动词。如 He hasn"t seen the film since last month.7)相关词组:“从那时起”:ever since、since then、from then on.注:ever since作为一个词组,放句尾可单独使用。如I have given up smoking ever since. 另外,还可在since后接句子。since前加ever,只是加重语气而已。如 I have given up smoking ever since I caught a bad cough. 8) since还可引导原因状语从句,译作“由于;因为”,相当于because。如 Since he was lazy, he didn"t finish his homework.
2023-07-02 14:02:224

since的各种用法

Since 用法小结 一.Since作为介词,后接某一确定的时间点,主句谓语动词是持续性动词,常与现在完成时态、现在完成进行时态或过去完成时态连用。例如: 1、He left the village in 1982 and I haven"t seen him since then.1982年他离开这个村子,从那以后我再没见过他。 2、She"s been working in a bank since leaving school.她中学毕业后就一直在一家银行工作。 3.He had spoken to her only once since the party. 自从那次聚会以来,他只跟她说过一次话。 二.Since作为副词,表示从过去以来、以后或到现在的情形或状态,常与现在完成时态连用。例如: 1.He left home two weeks ago and we haven"t heard from him since. 他两周前离开了家,到现在我们一直没有他的消息。 2.He came to Zhenjiang 6 years ago and has lived here (ever) since.他6年前来到镇江,从此便住在这里。 三.since引导原因状语从句 作为连词,since可引导原因状语从句,表示因为;既然;鉴于:例如: 1. He didn"t come since he was busy.他因为忙,所以没有来。 2. Since this method doesn"t work, let"s try another.既然这种方法不行,我们就试用另一种吧。 四.Since引导时间状语从句 1.若since引导的状语从句的谓语是终止性动词的过去时,则从句表示的时间是“从动作开始的那一时刻起”。例如: He has studied very hard since he came to our school.自从他来到我们学校,他学习就非常努力。 We have been missing them since they left here自从他们离开这里,我们就一直很想念他们。 2.若since引导的状语从句的谓语动词是持续性动词或表示状态动词的过去时时,则从句表示的时间是“从动作或状态结束时算起”。例如: I haven"t heard any noise since I slept. Sleep 为持续性动词,sleep的动作结束时,即“醒来”时,所以这句应译为“我醒后还未听到任何声音”。 3.若since引导的状语从句的谓语为持续性动词的现在完成时,则表示动作和状态延续到现在(说话时刻),其表示的时间的起点应从动作发生之时算起。例如:I haven"t heard from him since he has lived there。 这里has lived表示动作的持续性,时间的起点应从:“开始居住”时算起。因此此句可理解为“自从他(开始)住在那儿起,我就一直没收到他的来信”。 五.Since在特殊句型中的应用 句型I:“It is (has been)+时间+since+持续性动词的过去时”,表示“自从……以来到现在已有多久。”例如: It has been quite some time since I was last in London.我上次离开伦敦至今颇有一段时间了。句型II:“It was+时间+since+持续性动词的过去完成时”,表示“从……到过去某时间点以来”,例如:It was three years since we had been here.那时我们在这已呆了三年。
2023-07-02 14:02:474

since后接什么时态的句子?

since的用法时态有:since+过去一个时间点(如具体的年、月、日期、钟点、1980,last month,half past six)。since+一段时间+ago。since+从句。It is+一段时间+since从句等。扩展资料用法:1)since+过去一个时间点(如具体的年、月、日期、钟点、1980,last month,half past six)。2)since+一段时间+ago.例如:I have been here since five months ago. 我在这儿,已经有五个月了。3)since+从句。例如:Great changes have taken place since you left. 你走后,变化可大了。Great changes have taken place since we were here.我们走后,变化可大了。4)It is+一段时间+since从句。例如:It is two years since I became a postgraduate student. 我考上研究生有两年了。
2023-07-02 14:03:011

for和since的用法区别

for:(prep)表示时间的持续,后面加时间段,表示一段时间,多与带数词的名词连用,其谓语需用延续性动词。WehavebeenleaningEnglishfortwoyears.since:(prep)表示“自从过去某一时间点以来”,后面接点时间,强调动作或状态一直延续到现在,一般用现在完成时或现在完成进行时。Ihavebeenskatingsince9o"clock.Howlonghaveyoubeendoingthat?Since2years.Theskatingmarathonhasbeengoingforeighthours.Ihavebeencollectingkitesforsevenyears.HehasbeenwatchingEnglishmoviessince9p.m.Ihavebeenlisteningtomusicvideossince1999.
2023-07-02 14:03:223

since的用法?(急)

这是我的教案,供你参考:since的用法:译作“自从…以来” (1)接时间点:如 I have stayed in that country since 1995. 要求:谓v.用现在完成时,而且须是延续性动词。 (2)接一段时间 + ago:如 They have lived in that house since two years ago. 要求:谓v.用现在完成时,而且须是延续性动词。 (3)接时间状语从句:如 I have loved her since I met her last time. / Lily has stayed at home since she left school. 要求:主句的谓v.用现在完成时,而且须是延续性动词;从句的谓v.用一般过去时,而且须是终止性动词。 (4)用于句型“It"s / It has been + 一段时间 + since + 时间状语从句”中,译作“自从…以来, 已经…(时间)了”。如 It"s / has been three months since he moved to this city. 要求:主句的谓v.用一般现在时或现在完成时;从句的谓v.用一般过去时,而且须是终止性动词。 (5)用于句型“一段时间 + has passed since + 时间状语从句”中,译作“自从…以来, …(时间)已经过去了”。如上个例句还可写成:Three months has passed since he moved to this city. 要求:主句的谓v.用现在完成时,而且动词必须是has passed;从句的谓v.用一般过去时,而且须是终止性动词。 (6)注:当since用于否定句时,主句的谓v.可以是终止性动词。如 He hasn"t seen the film since last month. (7)相关词组:“从那时起”:ever since、since then、from then on. 注:ever since作为一个词组,放句尾可单独使用。如I have given up smoking ever since. 另外,还可在since后接句子。since前加ever,只是加重语气而已。如 I have given up smoking ever since I caught a bad cough. (8) since还可引导原因状语从句,译作“由于;因为”,相当于because。如 Since he was lazy, he didn"t finish his homework.希望我的回答能够帮到你,望采纳!祝你学习进步,天天快乐。O(∩_∩)O
2023-07-02 14:03:291

since的用法

Since 用法小结 一.Since作为介词,后接某一确定的时间点,主句谓语动词是持续性动词,常与现在完成时态、现在完成进行时态或过去完成时态连用。例如: 1、He left the village in 1982 and I haven"t seen him since then.1982年他离开这个村子,从那以后我再没见过他。 2、She"s been working in a bank since leaving school.她中学毕业后就一直在一家银行工作。 3.He had spoken to her only once since the party. 自从那次聚会以来,他只跟她说过一次话。 二.Since作为副词,表示从过去以来、以后或到现在的情形或状态,常与现在完成时态连用。例如: 1.He left home two weeks ago and we haven"t heard from him since. 他两周前离开了家,到现在我们一直没有他的消息。 2.He came to Zhenjiang 6 years ago and has lived here (ever) since.他6年前来到镇江,从此便住在这里。 三.since引导原因状语从句 作为连词,since可引导原因状语从句,表示因为;既然;鉴于:例如: 1. He didn"t come since he was busy.他因为忙,所以没有来。 2. Since this method doesn"t work, let"s try another.既然这种方法不行,我们就试用另一种吧。 四.Since引导时间状语从句 1.若since引导的状语从句的谓语是终止性动词的过去时,则从句表示的时间是“从动作开始的那一时刻起”。例如: He has studied very hard since he came to our school.自从他来到我们学校,他学习就非常努力。 We have been missing them since they left here自从他们离开这里,我们就一直很想念他们。 2.若since引导的状语从句的谓语动词是持续性动词或表示状态动词的过去时时,则从句表示的时间是“从动作或状态结束时算起”。例如: I haven"t heard any noise since I slept. Sleep 为持续性动词,sleep的动作结束时,即“醒来”时,所以这句应译为“我醒后还未听到任何声音”。 3.若since引导的状语从句的谓语为持续性动词的现在完成时,则表示动作和状态延续到现在(说话时刻),其表示的时间的起点应从动作发生之时算起。例如:I haven"t heard from him since he has lived there。 这里has lived表示动作的持续性,时间的起点应从:“开始居住”时算起。因此此句可理解为“自从他(开始)住在那儿起,我就一直没收到他的来信”。 五.Since在特殊句型中的应用 句型I:“It is (has been)+时间+since+持续性动词的过去时”,表示“自从……以来到现在已有多久。”例如: It has been quite some time since I was last in London.我上次离开伦敦至今颇有一段时间了。句型II:“It was+时间+since+持续性动词的过去完成时”,表示“从……到过去某时间点以来”,例如:It was three years since we had been here.那时我们在这已呆了三年。
2023-07-02 14:03:392

since 的用法

分类: 教育/科学 >> 升学入学 >> 高考 问题描述: How long _____ we have the mid-term examinations? a.is it since b. has it been since c.will it be since d. is it when 解析: B。has it been since since的用法主要有两点:一是表示“自从……以来”,二是表示“既然”之意。但如果只了解词的含义,而不了解其用法,在使用时就会造成错误。例如:I have not heard from him since I lived in Shanghai. 不少人会望文生义,将该句译为:“自从我住在上海以来,就再也没有收到他的信了。”而实际上这个句子的译文并非如此,那么正确的含义是什么呢? 下面谈谈since作连词引导时间状语从句的用法。 一、若since引导的状语从句的谓语动词是终止性的过去时,则从句表示的时间是“从动作开始的那一时刻起”。如: He has studied very hard since he came to our school.自从他来到我们学校,他学习就非常努力。 We have been missing them since they left here自从他们离开这里,我们就一直很想念他们。 这是最常见的一种用法,此处不再多述。 二、若since引导的状语从句的谓语动词是持续性动词或表示状态的动词的过去时时,则从句表示的时间是“从那持续动作或状态结束时算起”。如: I haven"t heard any noise since I slept. Sleep 为持续性动词,sleep的动作结束时,即“醒来”时,这句应译为“我醒后还未听到任何声音”。 John is now with his parents in New York, it is already three years since he was a teacher约翰现在和父母一起住在纽约,他不当教师已经三年了。 本文开始出现的那个句子就可以译为“自从我离开上海,就再也没有收到他的信。”这种译法常被人们误用,我们不妨再多举几个例子看看: How long is it since you lived in Shanghai?你离开(没住在)上海多久了? It is half a month since he was a League member.他退团(不当团员)半个月了。 It"s been quite some time since I was last in London我离开伦敦已很长时间了。 比较:He has written to me frequently since I was ill.自从我病愈以来,他屡次给我写信。(从句谓语为状态动词) He has written to me frequently since I fell ill.自从我生病以来,他就屡次给我写信。(从句谓语为终止性动词) 三、若since引导的状语从句的谓语为持续性动词的现在完成时,则表示动作和状态延续到现在(说话时刻),其表示的时间的起点应从动作发生之时算起。如: I haven"t heard from him since he has lived there。 这里has lived表示动作的持续性,时间的起点应从:“开始居住”时算起。因此此句可理解为“自从他(开始)住在那儿起,我就一直没收到他的来信”。 Since we have owned a car, we have gone camping every year。自从我们自己有了汽车,我们每年都去野营。 试比较:1. Since I"ve been at this school, we have had three headmasters.自从我到这所学校,我们已换了三个校长了。 Since I was at this school, they have had three headmasters.自从我离开这所学校,他们已换了三个校长了。 2.He has never been to see me since I have been ill. 自从我生病以来,他从未来看过我。 He has never been to see me since I was ill. 自从我病愈以来,他从未来看过我。 由此可见,since引导的从句持续动词的一般过去时和现在完成时所表示的意思恰好相反。换言之,前者以肯定的语法形式反映着否定的逻辑内容,而后者的形式与内容是一致的。 至于It is +一段时间+since…的句型与It has been +一段时间+since…意思相同。前者是规范说法,后者是口语说法。 应注意的是,在这种结构中,since引导的从句绝对不能用否定式的谓语动词来表示否定意义,下面两句都错了: It is a long time since he didn"t study English. It"s o months since you didn"t e to see me. 正确的说法为: It"s a long time since he studied English 他好久没学英语了。 You haven"t e to see me for o months. 你有两个月没来看我了。
2023-07-02 14:03:581