时间状语从句讲解和练习(答案)

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2021年初中英语语法:时间状语从句解析和练习题(含答案)

2021年初中英语语法:时间状语从句解析和练习题(含答案)

2021年初中英语语法:时间状语从句解析和练习题(含答案)在句子中起时间状语作用的句子称为时间状语从句。

时间状语从句可以放在句首、句中和句尾。

引导时间状语从句的词有when、while、as、before、after、since、until/till、as soon as、once、each time、next time、the moment、immediately、instantly等。

(一)when引导的时间状语从句1)when意为“当......时”,引导时间状语从句,表示主句的动作和从句的动作同时或先后发生例句:Faith is the bird that feels the light when the dawn is still dark. 信念是黎明前的黑夜里能感受到光明的鸟儿。

例句:When I was wandering in the street, I met her. 我在街上徘徊的时候遇到了她。

2)when引导的时间状语从句中的动词可以用延续性的=动词,也可以用终止性动词例句:He was listening to the music when I went in. 当我进去的时候,他正在听音乐。

例句:I will visit my parents when I have time. 我有空时会去看望我的父母。

(二)while引导的时间状语从句While引导的时间状语从句,常译为“与......同时,在......期间”,while引导的从句常用延续性动词或表示状态的动词。

例句:They rushed in while we were discussing problems. 当我们正在讨论问题时,他们冲了进来。

例句:Make hay while the sun is shining. (谚)趁热打铁。

(三)as引导的时间状语从句As引导的时间状语从句,可以表达“正当,一边一边,随着”等意思。

状语从句(含练习与答案)

状语从句(含练习与答案)

状语从句(含练习与答案)第十二讲状语从句(含练习与答案)担任状语的从句叫状语从句,可以用来表示时间、地点、原因、目的、结果、条件、方式、比较、让步等。

一、时间状语从句:引导词有after,before,as,once,since,till,until,when,whenever,while,as soon as,the moment/minute…(一…就),the time, the day, every time, next time, each time,by the time ,no sooner…than(一…就),hardly(scarcely)…when(一…就)immediately/directly等.Each/Every time he comes here, he will drop in on me.He was ill last time I saw him.上次我见到他时他病了.Hardly had I got to the office when my wife phoned me to go back home at once.=No sooner had I got to the office than my wife phoned me to go home at once.I recognized him immediately I saw him.※ when, while与 as当主句动作时瞬时的,从句动作是延续的,三者都可以用。

when引导的从句动词可以是延续性的或短暂性的,在“be…when…”句式中when表“at that time(就在这时)”意。

while引导的从句中动词必须是延续性的;有时并不表示时间,而表示对比,意“而”、“却”,并列连词,表对照。

As 强调主、从句动作同时或几乎同时发生,意为“一边…一边…”。

When I got home I found the door locked.While / When / as we were working in the fields, it suddenly began to rain.He was wandering through the streets when a bike hit him.I was about to go out when the telephone rang.I had just arrived at school when my wife phoned me to go home.His pencil is red, while mine is yellow.John sang happily as he went along.※ till与until一般情况下可以互换,但until可以位于句首,till则不能。

英语状语从句讲解及练习题(附答案)

英语状语从句讲解及练习题(附答案)

(一)状语从句概述定义状语从句用作状语,是起副词作用的句子。

位置状语从句可以放在主句之前,也可以放在主句之后,时间、条件、原因和让步状语从句放在句首时需要用逗号和主句隔开。

分类根据其作用可以分为时间、地点、原因、条件、目的、让步、方式和比较等状语从句。

作用它可以修饰谓语、非谓语动词、定语、状语和整个句子。

(二)状语从句详解1. 时间状语从句引导词用法示例when 意为“当…的时候”。

When引导从句的谓语动词可以是延续性动词,也可以是瞬间动词。

并且when有时表示“就在那时”A liar is not believed when he speaks the truth.说谎者讲真话时也没有人相信。

When he arrives, I’ll call you. When you laugh and smile, your body relaxes.while 意为“在…的时候,在…的同时”。

While引导从句的谓语动词必须是延续性的,发生时间较长,并强While I was standing at the window, I saw several boys running along the street.While John was watching TV, his wife was cooking.调主句和从句的动作同时发生(或者相对应)。

While 有时还可以表示对比。

as 意为“一边…一边…”。

As引导的动作是延续性的,发生时间较短,一般用于主句和从句动作同时发生;as也可以强调一前一后。

The writer was angry as he was travelling on a train to London because someone had invaded his “space”.He smiled as he stood up.after 意为“在…之后”。

表示主句动作发生在从句动作之后。

时间状语从句(含练习及答案)

时间状语从句(含练习及答案)

以when 引导的时间状语从句- When I got home, my son had finished his homework. (主句动作发生在从句之前)- When(当...时候, 主语+did) we arrived, it was raining.- When(正当...时候,主语+be+doing) I was playing the computer games, my mum came in. - He is always nervous when he speaks to strangers.- I usually walk to school when it rains.以while 引导的时间状语从句- While I was reading, my brother was playing with his toy cars. (主从句子动作同时发生)- While/When/As he was studying in the library, I saw him. (表示一段时间时,while/when/as 可替换)while引导的从句的谓语动词必须是持续性动作:I saw him while(x) I was getting off the bus.(x)I saw him when/as I was getting off the bus.以as 引导的时间状语从句- He will grow wiser as he grows older. 随着年龄的增长,他会聪明起来。

(随着,表示时间的推移,这时,不用when/while)- He entered the room as/when/while the meeting was going on. 正当开会的时候,他走进房间。

以before引导的时间状语从句- He had washed his hands before he had dinner. (主句动作先于从句动作)- Please clean the house before you move in.以after 引导的时间状语从句- She went on holiday after she had taken the examination. (从句动作先于主句)- You can watch TV after you finish your homework.以since 引导的时间状语从句- She has been in the house since she came to the city. (主句完成时态,从句过去时)- I have taught them English since last year.以as soon as引导的时间状语从句- I will write to you as soon as I get to America. 我一到美国就会给你写信。

初中英语状语从句归纳附练习及答案

初中英语状语从句归纳附练习及答案

初中英语状语从句归纳附练习及答案状语从句是指在句子中充当状语的从句。

它可以修饰动词、形容词、副词等,表示时间、条件、原因、方式等不同的状况。

掌握状语从句的用法对于理解和运用英语句子结构非常重要。

本文将对初中英语中常见的状语从句进行归纳,并提供相应的练习题及答案供大家学习参考。

一、时间状语从句时间状语从句常用when,while,as,before,after,since,until等引导。

表示主句动作发生的时间。

例句1:I will call you when I arrive at the airport.当我到达机场时,我会给你打电话。

例句2:She likes to listen to music while she is doing her homework.她喜欢一边做作业一边听音乐。

练习题:1. He will go to bed _______ he finishes his homework.2. Don't play with fire _______ your parents are not at home.3. You can visit the museum _______ you have free time.1. after2. while3. whenever二、条件状语从句条件状语从句通常使用if或unless引导。

表示条件或假设的情况。

例句1:If it rains tomorrow, we will stay at home.如果明天下雨,我们就待在家里。

例句2:You will pass the exam unless you work hard.除非你努力学习,否则你将无法通过考试。

练习题:1. I will buy a new car _______ I save enough money.2. _______ you study hard, you will fail the exam.3. She won't go shopping with you _______ it stops raining.答案:1. if3. until三、原因状语从句原因状语从句常用because,since,as等引导。

高中时间状语从句和练习[含答案解析]

高中时间状语从句和练习[含答案解析]

高中时间状语从句和练习[含答案解析]状语从句状语从句在句中作状语,修饰主句中的动词、形容词或副词等。

状语从句放在主句之前时,常用逗号分开;放在主句之后,一般不用逗号。

状语从句按其意义和作用可分为时间、原因、地点、条件、让步、目的、结果、方式、比较等9种。

1.时间状语从句时间状语从句表示主句动作发生的时间,主要由when,while,as ; before, after; till (until); once, by the time, as soon as, no sooner ... than和hardly ... when及名词词组the moment等引导。

1) when“在……的时候”; while “在……期间”; as “正当……的时候”when意为“在……的时候”,强调“特定时间”。

When spring came, he felt like a trip.When he was eating his breakfast, he heard the doorbell ring.说明:连词when在状语从句中还有如下几种含义:①表示突然发生的事,含义为“(正在……时)忽然”。

I was just coming along to see you when I ran into Wilson.I had been working a couple of months when I had a letter from Jane.②表示过早发生某事,意为“(还没……)就”。

此含义有时可用before代替。

I hadn’t been rea ding for half an hour when I heard steps outside.我刚读了不到半个小时就听到外面有脚步声。

I had been there little more than a week when I set to work in earnest.③表示“在……的情况下”,常可译为“虽然”,“既然”,“如果”。

英语时间状语从句讲解与练习(完整版)

英语时间状语从句讲解与练习(完整版)

英语时间状语从句讲解与练习英语时间状语从句讲解与练习when, while 和 as 引导时间状语从句的用法这三个词的意思很简单,都有“当……时候”的意思。

但学生经常会问三个词的区别在哪儿,特别是在做选择题的时候。

别说是学生,就我个人而言,做这样的选择题要保证百分之百的正确也是不可能的。

现根据大量的实例和个人的思考,做一点小结,供大家参考。

一、when 的用法如果只从现象来看,when 从句用的最多的是一般过去时,而主句的时态没有限制,根据具体情况而定。

1. When he was a child he was always trying out new ideas. 他小时候就常常试验一些新的设想。

2. When she came into my room, I was just reading a book. 她走进我房间时,我正在看书。

3. Were you writing when the teacher came in 老师进来的时候,你在写信吗?4. Sorry, I was out when you called me. 对不起,你打电话来的时候我出去了。

5. He was on the point of leaving when someone knocked at the door. 他正要走,这时有人敲门。

6. I thought of it just when you opened your mouth. 就在你要说话的时候,我也想到了。

7. I had hardly[scarcely] closed my eyes when someone knocked at the door. 我刚一闭上眼,就有人在敲门了。

根据以上的例句,我们可以总结出一点:when 从句的A事件,相当于另一个事件B发生的时间点。

也就是说,when 从句的重点不在动作本身发生的状态,而只是把它作为一个时间点,所以when 多数情况下用的是一般过去时,则不用正在进行时。

高中时间状语从句及练习(含答案)

高中时间状语从句及练习(含答案)

状语从句状语从句在句中作状语,修饰主句中的动词、形容词或副词等。

状语从句放在主句之前时,常用逗号分开;放在主句之后,一般不用逗号。

状语从句按其意义和作用可分为时间、原因、地点、条件、让步、目的、结果、方式、比较等9种。

1.时间状语从句时间状语从句表示主句动作发生的时间,主要由when,while,as ; before, after; till (until); once, by the time, as soon as, no sooner ... than和hardly ... when及名词词组the moment等引导。

1) when“在……的时候”; while “在……期间”; as “正当……的时候”when意为“在……的时候”,强调“特定时间”。

When spring came, he felt like a trip.When he was eating his breakfast, he heard the doorbell ring.说明:连词when在状语从句中还有如下几种含义:①表示突然发生的事,含义为“(正在……时)忽然”。

I was just coming along to see you when I ran into Wilson.I had been working a couple of months when I had a letter from Jane.②表示过早发生某事,意为“(还没……)就”。

此含义有时可用before代替。

I hadn’t been reading for half an hour when I heard steps outside.我刚读了不到半个小时就听到外面有脚步声。

I had been there little more than a week when I set to work in earnest.③表示“在……的情况下”,常可译为“虽然”,“既然”,“如果”。

时间状语从句讲解和练习(答案)

时间状语从句讲解和练习(答案)

时间状语从句用句子表达一件事情或一个行为发生的时间,这个句子就叫时间状语从句。

时间状语从句根据其所表示的时间不同,所使用的连词也不同。

下面我们一起来看一下几个常见的时间状语从句:1.when引导的从句:表示主句的动作和从句的动作同时发生,或从句的动作发生在主句动作之前。

例如:I was going out when a visitor came. (动词动作同时发生。

)我正要出门,有客人来访。

I shall tell her the good news when she comes.她来时,我将告诉她这个好消息。

小试牛刀:I found mother cooking for me. I got home.(when)_______________________________________ He was listening to the radio when I home. (get)2.while 引导的从句:表示“当……过程中”,强调某一段时间内主句和从句中谓语动词所表示的动作在同一时期发生。

由于while从句表示一个持续的行为,所以从句中要用持续性动词,并且持续性动词常用进行时态。

例如:Keep an eye on my little sister while I am away.我不在时,请照看一下我的小妹妹。

While we were watching TV, Jim came in. 我们看电视的时候,Jim进来了。

小试牛刀:It started to rain. We were playing football.(while)_______________________________________Lucy was cleaning the room Lily was listening to music.3.as引导的时间状语从句:表示“当……的时候;一边……一边……;随着……”,其从句的主语与主句的主语往往是同一人或物。

状语从句讲解及习题附答案word文档良心出品

状语从句讲解及习题附答案word文档良心出品

状语从句讲解及习题附答案word文档良心出品(一)状语从句概述(二)状语从句详解1.时间状语从句引导词用法示例whe n 意为“当…的时候” When A liar is not believed when 引导从句的谓语动词可以he speaks the truth. 说谎者讲是延续性动词,也可以是真话时也没有人相信。

瞬间动词。

并且when有When he arrives , I 'call you.时表示“就在那时”When you laugh and smile,your body relaxes.while 意为“在??的时候,在…的While I was standing at the 同时” While引导从句的window, I saw several boys谓语动词必须是延续性running along the street.的,发生时间较长,并强调主句和从句的动作同时发生(或者相对应)。

While有时还可以表示对比。

as 意为“一边…一边…” As引导的动作是延续性的,发生时间较短,一般用于主句和从句动作同时发生;as也可以强调一前一后。

after 意为“在??之后”表示主句动作发生在从句动作之后。

主句与从句的动作时间关系与before引导的从句相反。

before 意为“在??之前”引导的从句不用否定形式的谓语,并且当before引导的从句位于主句之后,有时译成While John was watchingTV, his wife was cook ing.The writer was angry as hewas travelling on a train to London because someonehad inv aded his sp ace ”.He smiled as he stood up.With many hungry visitors waiting, don' stay too longat your table after you havefini shed.If an early exit is n ecessary, you can leave after a sceneis over.You can ' watch TV beforeyou finish your homework. Before it ended, the theatre was almost empty.“就才”当主句用将来时,My father had left for Ca nada意为“自从,从??以来”引since I have been studying hardI will call you as soon as Iarrive.2. 地点状语从句引导词用法示例where意为“哪里。

高中时间状语从句及练习(含解答)

高中时间状语从句及练习(含解答)

高中时间状语从句及练习(含解答)状语从句是用来修饰主句中的动词、形容词或副词等的从句。

当状语从句放在主句之前时,通常需要用逗号分隔;而当放在主句之后时,则不需要逗号。

根据其意义和作用,状语从句可分为时间、原因、地点、条件、让步、目的、结果、方式和比较等九种类型。

1.时间状语从句时间状语从句用于表示主句动作发生的时间,通常由when、while、as、before、after、till (until)、once、by the time、as soon as、no sooner。

than和hardly。

when等引导词,以及名词词组XXX等构成。

其中,when表示“在……的时候”,强调“特定时间”。

例如:When spring came。

he felt like taking a trip.When he was eating his breakfast。

XXX.需要注意的是,连词when在状语从句中还有其他含义。

比如,它可以表示突然发生的事,含义为“(正在……时)忽然”;可以表示过早发生某事,意为“(还没……)就”;还可以表示“在……的情况下”,通常译为“虽然”、“既然”、“如果”等。

举个例子:I was just coming along to see you when I ran into Wilson.I hadn’t been reading for half an hour when I heard steps outside.She refuses help when (although) she has many friends.Why do you walk when (since) you have a car?How can I make them understand if they refuse to listen to me。

It's frustrating when you XXX。

状语从句讲解及练习(附答案解析)

状语从句讲解及练习(附答案解析)

状语从句主要用来修饰主句或主句的谓语。

一般可分为九大类,分别表示时间、地点、原因、目的、结果、条件、让步、比较和方式。

尽管种类较多,但由于状语从句与汉语结构和用法相似,所以理解和掌握它并不难。

状语从句的关键是要掌握引导不同状语从句的常用连接词和特殊的连接词即考点。

现分别列举如下:1、时间状语从句常用引导词:when, as, while, as soon as, while, before, after, since , till, until特殊引导词:the minute, the moment, the second, every time, the day,the instant, immediately , directly, no sooner … than, hardly …when, scarcely … whenI didn't realize how special my mother was until I became an adult.While John was watching TV, his wife was cooking.The children ran away from the orchard(果园) the moment they saw the guard.No sooner had I arrived home than it began to rain.Every time I listen to your advice, I get into trouble.2、地点状语从句常用引导词:where特殊引导词:wherever, anywhere, everywhereGenerally, air will be heavily polluted where there are factories.Wherever you go, you should work hard.3、原因状语从句常用引导词:because, since, as, for特殊引导词:seeing that, now that, in that, considering that, given that, considering that, as much as, so much asMy friends dislike me because I'm handsome and successful.Now that everybody has come, let's begin our conference.The higher income tax is harmful in that it may discourage people from trying to earn more.Considering that he is no more than 12 years old, his height of 1.80 m is quite remarkable.4、目的状语从句常用引导词:so that, in order that特殊引导词:lest, in case, for fear that,in the hope that, for the purpose that, to the end thatThe boss asked the secretary to hurry up with the letters so that he could sign them.The teacher raised his voice on purpose that the students in the back could hear more clearly.5、结果状语从句常用引导词:so that, so… that, such … that,特殊引导词:such that, to the degree that, to the extent that, to such a degree that, He got up so early that he caught the first bus.It's such a good chance that we must not miss it.To such an degree was he excited that he couldn't sleep last night.6、条件状语从句常用引导词:if, unless,特殊引导词:as/so long as, only if, providing/provided that, suppose that, in case that, on condition thatWe'll start our project if the president agrees.You will certainly succeed so long as you keep on trying.Provided that there is no opposition, we shall hold the meeting here.7、让步状语从句常用引导词:though, although, even if, even though特殊引导词: as(用在让步状语从句中必须要倒装),while ( 一般用在句首),no matter …, in spite of the fact that, while, whatever, whoever, wherever, whenever, however, whicheverMuch as I respect him, I can't agree to his proposal.尽管我很尊敬他, 我却不同意他的建议。

英语时间状语从句讲解与练习(完整版)

英语时间状语从句讲解与练习(完整版)

英语时间状语从句讲解与练习英语时间状语从句讲解与练习when, while 和as 引导时间状语从句的用法这三个词的意思很简单,都有“当……时候”的意思。

但学生经常会问三个词的区别在哪儿,特别是在做选择题的时候。

别说是学生,就我个人而言,做这样的选择题要保证百分之百的正确也是不可能的。

现根据大量的实例和个人的思考,做一点小结,供大家参考。

一、when 的用法如果只从现象来看,when 从句用的最多的是一般过去时,而主句的时态没有限制,根据具体情况而定。

1. When he was a child he was always trying out new ideas.他小时候就常常试验一些新的设想。

2. When she came into my room, I was just reading a book. 她走进我房间时,我正在看书。

3. Were you writing when the teacher came in? 老师进来的时候,你在写信吗?4. Sorry, I was out when you called me. 对不起,你打电话来的时候我出去了。

5. He was on the point of leaving when someone knocked at the door.他正要走,这时有人敲门。

6. I thought of it just when you opened your mouth. 就在你要说话的时候,我也想到了。

7. I had hardly[scarcely] closed my eyes when someone knocked at the door.我刚一闭上眼,就有人在敲门了。

根据以上的例句,我们可以总结出一点:when 从句的A 事件,相当于另一个事件B发生的时间点。

也就是说,when 从句的重点不在动作本身发生的状态,而只是把它作为一个时间点,所以when 多数情况下用的是一般过去时,则不用正在进行时。

译林版牛津初中英语时间状语从句讲解与练习和答案

译林版牛津初中英语时间状语从句讲解与练习和答案

译林版牛津初中英语时间状语从句讲解与练习和答案译林版牛津初中英语时间状语从句讲解与练(一)when, while和as引导时间状语从句的用法一、when的用法如果只从现象来看,when从句用的最多的是一般过去时,而主句的时态没有限制,根据具体情况而定。

1. When he was a child he was always trying out new ideas.他小时候就常常试验一些新的设想。

2. When she came into my room, I was just reading a book.她走进我房间时,我正在看书。

3. Were you writing when the XXX came in?老师进来的时候,你在写信吗?4. Sorry, I was out when you called me.对不起,你打电话来的时候我出去了。

5. He was on the point of leaving when XXX.他正要走,这时有人敲门。

6. I thought of it just when you XXX.就在你要说话的时候,我也想到了。

7. I had hardly[scarcely] XXX.我刚一闭上眼,就有人在敲门了。

根据以上的例句,我们能够总结出一点:when从句的A 变乱,相称于另外一个变乱B发生的工夫点。

也就是说,when从句的重点不在举措自己发生的状况,而只是把它作为一个工夫点,所以when多半情形下用的是普通曩昔时,则不消正在举行时。

由于假如用正在举行时,它透露表现的就是一段工夫而不是一个工夫点了。

根据这一点,有的文章弥补说:when从句的动词大多是瞬时动词。

这类说法也能够参照。

实际上,when从句也可以有其它的时态,但几乎也不用进行时,因为它也只是作为一个时间参照点。

例如:1. When I got to the airport, the guests had left.当我赶到飞机场时,客人们曾经离开了。

英语时间状语从句讲解与练习(完整版)

英语时间状语从句讲解与练习(完整版)

英语时间状语从句讲解与练习英语时间状语从句讲解与练习when, while 和 as 引导时间状语从句的用法这三个词的意思很简单,都有“当……时候”的意思。

但学生经常会问三个词的区别在哪儿,特别是在做选择题的时候。

别说是学生,就我个人而言,做这样的选择题要保证百分之百的正确也是不可能的。

现根据大量的实例和个人的思考,做一点小结,供大家参考。

一、when 的用法如果只从现象来看,when 从句用的最多的是一般过去时,而主句的时态没有限制,根据具体情况而定。

1. When he was a child he was always trying out new ideas.他小时候就常常试验一些新的设想。

2. When she came into my room, I was just reading a book. 她走进我房间时,我正在看书。

3. Were you writing when the teacher came in? 老师进来的时候,你在写信吗?4. Sorry, I was out when you called me. 对不起,你打电话来的时候我出去了。

5. He was on the point of leaving when someone knocked at the door.他正要走,这时有人敲门。

6. I thought of it just when you opened your mouth. 就在你要说话的时候,我也想到了。

7. I had hardly[scarcely] closed my eyes when someone knocked at the door.我刚一闭上眼,就有人在敲门了。

根据以上的例句,我们可以总结出一点:when 从句的A事件,相当于另一个事件B发生的时间点。

也就是说,when 从句的重点不在动作本身发生的状态,而只是把它作为一个时间点,所以when 多数情况下用的是一般过去时,则不用正在进行时。

时间状语从句+习题练习(含答案)

时间状语从句+习题练习(含答案)

专题: 时间状语从句在下列空格中填入适当连词。

1._________he comes tomorrow,I will ask where he has been.2._________he was speaking,everybody listened carefully.3.I saw her just now_________she was getting off the train.4.Have a good look at that man________you pass him.5.It was already eight o'clock_________we got there.6.I was about to go out_________a visitor came.7.We'll go to the country at the beginning of June,_________the summer harvest will start.8.He learned to speak German_________he was in Berlin.9.Henry is in charge of the office________Mr.Smith is away.10.I listen to the recorder_________I have time.11.He had learned Chinese_________he came to China.12._________the work was done,we sat down to sum up experience.13.I haven't seen him_________he moved to the other side of the town.14.I waited________ he came back.15.I didn’t recognize him________he took off his eyeglasses.16.She likes everything to be in place________she starts to work.17.The thieves ran away_________they caught sight of the police.18.They decided to go back home_________their money ran out.19.__________I get to the airport,I will phone you to pick me up.20.They were about to leave______it began to rain.Keys:1.When2.While/When3.as4.when/as5.when6.when7.when8.while9.whi le10.whenever11.before12.After13.since14.till/until15.until16.before17.as soon as18.before19.As soon as20.when。

状语从句[含练习和答案解析]

状语从句[含练习和答案解析]

第十二讲状语从句(含练习与答案)担任状语的从句叫状语从句,可以用来表示时间、地点、原因、目的、结果、条件、方式、比较、让步等。

一、时间状语从句:引导词有after,before,as,once,since,till,until,when,whenever,while,as soon as,the moment/minute…(一…就),the time, the day, every time, next time, each time,by the time ,no sooner…than(一…就),hardly(scarcely)…when(一…就)immediately/directly等.Each/Every time he comes here, he will drop in on me.He was ill last time I saw him.上次我见到他时他病了.Hardly had I got to the office when my wife phoned me to go back home at once.=No sooner had I got to the office than my wife phoned me to go home at once.I recognized him immediately I saw him.※ when, while与 as当主句动作时瞬时的,从句动作是延续的,三者都可以用。

when引导的从句动词可以是延续性的或短暂性的,在“be…when…”句式中when表“at that time(就在这时)”意。

while引导的从句中动词必须是延续性的;有时并不表示时间,而表示对比,意“而”、“却”,并列连词,表对照。

As 强调主、从句动作同时或几乎同时发生,意为“一边…一边…”。

When I got home I found the door locked.While / When / as we were working in the fields, it suddenly began to rain.He was wandering through the streets when a bike hit him.I was about to go out when the telephone rang.I had just arrived at school when my wife phoned me to go home.His pencil is red, while mine is yellow.John sang happily as he went along.※ till与until一般情况下可以互换,但until可以位于句首,till则不能。

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时间状语从句用句子表达一件事情或一个行为发生的时间,这个句子就叫时间状语从句。

时间状语从句根据其所表示的时间不同,所使用的连词也不同。

下面我们一起来看一下几个常见的时间状语从句:1.when引导的从句:表示主句的动作和从句的动作同时发生,或从句的动作发生在主句动作之前。

例如:I was going out when a visitor came. (动词动作同时发生。

)我正要出门,有客人来访。

I shall tell her the good news when she comes.她来时,我将告诉她这个好消息。

小试牛刀:I found mother cooking for me. I got home.(when)_______________________________________ He was listening to the radio when I home. (get)2.while 引导的从句:表示“当……过程中”,强调某一段时间内主句和从句中谓语动词所表示的动作在同一时期发生。

由于while从句表示一个持续的行为,所以从句中要用持续性动词,并且持续性动词常用进行时态。

例如:Keep an eye on my little sister while I am away.我不在时,请照看一下我的小妹妹。

While we were watching TV, Jim came in. 我们看电视的时候,Jim进来了。

小试牛刀:It started to rain. We were playing football.(while)_______________________________________ Lucy was cleaning the room Lily was listening to music.3.as引导的时间状语从句:表示“当……的时候;一边……一边……;随着……”,其从句的主语与主句的主语往往是同一人或物。

例如:She sang as she worked. 她一边工作一边唱歌。

=She was singing as she was working.I saw him as he was getting off the bus. 正当他下公共汽车时, 我看见了他。

小试牛刀:we walked, we talked.You will grow wiser you grow older.4.before引导的从句:一般表示主句的动作发生在从句动作之前。

例如:I didn’t know any English before I came here. 我到这儿来之前,一点英语都不懂。

例如:I had written my report before my father came back.小试牛刀:He bought the ticket he went to see the film.5.after引导的从句:表示主句的动作发生在从句动作之后。

例如:After he locked the door, he left. 他锁上门后,就走了。

After he had finished his work, he played a game of chess with his friend. 他做完工作后,和朋友下了一盘棋。

小试牛刀:I will go out to play basketball with you. I finish my homework.(after)_______________________ _He left the classroom he had finished his homework the other day.6.since引导的从句:表示“自从……以来”,从句中的动词一般表示动作的起点,用过去时。

主句中的动词表示动作延续的情况,一般用现在完成时。

如果主句中的动词表示的不是延续的动作而是表示目前的状态,可用一般现在时。

例如:Since he met this good friend, he has made great progress in his studies.自从遇见了这个好朋友,他已在学习上取得了巨大的进步。

例如:It is twenty years since she joined the Party. 她入党二十年了。

(主句中的动词表示的是状态,用现在时。

)小试牛刀:it is five years since we last time.(meet)Mr green has taught in that school since he (come) to China three years ago.7.until 引导的从句:表示一个动作持续到某一时刻。

(1)表示“直到……”,如果主句中的谓语动词是延续性动词时,用肯定或否定形式都可以,但表达的意思不同。

(2)表示“直到……才”,主句用否定式,从句用肯定。

如果主句中的谓语动词是瞬间动词时,必须用否定形式。

例如:They worked until it was late. 他们一直工作到天黑。

She didn’t go to bed until she finished her homework. 她写完作业才睡觉。

小试牛刀:All the people left. He waited.(until)________________________________________ He went to bed . his father came home.________________________________________8.as soon as 引导的从句表示“一……就”,强调动作紧密相连。

例如:As soon as she came to the classroom, she began to read English.她一到教室,就开始读英语。

小试牛刀:We start to sing. It''s 12 o''clock. (as soon as)________________________________________9. by the time 到。

为止(所在句子的主句应用完成时)例如:By the time he gets there , his father has already gone.他到家的时候,他爸爸已经走了。

小试牛刀:By the time I got to school, the class .(begin)我到校时,已经开始上课了。

知识扩展1. it is +时间段+since+一般过去时(从。

以来多长时间了)例如:it is five years since we met last time.从我们上次见面已经五年了。

2. it is/ will be +时间段+before+一般现在时,it was+时间段+before+一般过去时(。

才)例如:it is a long time before I go to sleep .过了很长时间我才睡着。

it was an hour before the police arrived.过了一个小时,警察才来。

小试牛刀:It_____(be) ten years since we ________(leave) that city .It is reported that it may be two or three months_____it is possible to test this medicine on animalsHow long do you think it will be ______ China sends a manned spaceship to the moon?4、巧记10个瞬间性动词在学习以when和while引导的时间状语从句时,用到了瞬间动词和延续动词。

常见的瞬间动词有die(死),come(来),go(去),eave(离开),arrive(到达),begin(开始),buy(买),,join(加入),borrow(借进,借出),return(归还)等。

这10个瞬间动词可用两句口诀来帮助记忆: 开始离去,借来还, 出生入死,买到家。

注释:1."开始离去,借来还"为begin,leave,go,borrow,come,return六词;2."出生入死,买到家"为join,die,buy,arrive四词。

3.各词改为相应的延续动词为:begin→be on, leave→be away from, borrow→keep, go→be, come→be here, return→be back,join→be in, die→be dead, buy→have, arrive→be here等。

'5、状语从句与主句的时态问题1.由when、while引导的时间状语从句的时态:(主过从过)主句(过去进行时)+when +从句(一般过去)主句(一般过去时)+when +从句(过去进行时)主句(一般过去时)+while +从句(过去进行时)主句(过去进行时)+while +从句(过去进行时)注意:看动词为短暂性动词用一般过去时,动词为延续性动词则用过去进行时。

小试牛刀:Mother (cook)supper when I (get) home yesterday.Last Sunday I (meet) Lin Hong when I (walk) in the street.When the students (have ) a meeting, the teacher (come) in.While Han Meimei (sweep) the floor, Lucy (carry) water.2. 由when、after、before、by the time引导的时间状语从句的时态:主句、从句的谓语动词都已完成,则先发生的动作用过去完成时,后发生的动作用一般过去时。

例如:After he had finished his work, he played a game of chess with his friend.小试牛刀:When they (get) to the cinema last light, the film (start).I (go) out with my friends after I (finish) all the homework last night.3.时间状语从句与主句的时态不一致。

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