(完整版)unit3When和while引导的时间状语从句

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when和while时间状语从句

when和while时间状语从句

when和while时间状语从句一、when引导的时间状语从句1. 基本用法- when引导的时间状语从句,既可以表示在某一时刻发生的动作,也可以表示在某一时间段内发生的动作。

从句中的动词可以是短暂性动词,也可以是延续性动词。

- 例如:- When I got home, my mother was cooking.(got是短暂性动词,这里表示在我到家这个时刻,妈妈正在做饭)- When we lived in the countryside, we often went fishing.(lived是延续性动词,描述我们住在乡下这个时间段内经常去钓鱼的情况)2. 时态搭配- 当主句是一般将来时,从句常用一般现在时表将来。

- 例如:When he arrives tomorrow, we will have a party.(arrives是一般现在时,主句will have是一般将来时)- 当主句是过去进行时,从句用一般过去时,表示在过去某个动作进行时,另一个动作发生了。

- 例如:I was reading a book when he came in.(was reading是过去进行时,came是一般过去时)3. 位置特点- when引导的时间状语从句可位于主句之前或之后。

当位于主句之前时,从句后常用逗号与主句隔开。

- 例如:When it rains, the ground gets wet.(从句在前)- The birds fly south when winter comes.(从句在后)二、while引导的时间状语从句1. 基本用法- while引导的时间状语从句,从句中的动词必须是延续性动词,表示在某一时间段内,主句和从句的动作同时发生。

- 例如:While I was reading, my sister was watching TV.(reading和watching都是延续性动词,说明我读书和妹妹看电视这两个动作同时进行)2. 时态搭配- 当主句和从句都是过去进行时,表示两个动作在过去某一时间段内同时进行。

when和while引导时间状语从句的区别及用法

when和while引导时间状语从句的区别及用法

when和while引导时间状语从句的区别及用法when和while引导时间状语从句的区别及用法连接时间状语从句的连接词有:when、before、after、while、assoonas、until、since......如果主句是一般将来时,从句只能用一般现在时表示将来意义。

下面小编为您收集整理了when和while引导时间状语从句的区别及用法,欢迎阅读!when和while引导时间状语从句的基本区别:(一)、when,while都有“当……时候”的意思。

when既可表示某一点时间,也可以表示某一段时间。

在when 引导的时间状语从句中,其谓语动词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其后发生。

例如: 1、I was just reading a book when she came into my room.她走进我房间时,我正在看书。

2、Were you writing when the teacher came in?老师进来的时候,你在写信吗?3、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。

(二)、while只能表示某一段时间,不能表示某一点时间。

在while引导的时间状语从句中,其谓语动词只能是延续性的,而且也只能与主句中的谓语动词同时发生或存在。

例1、While Jim was mending his bike, Lin Tao came to see him.正当吉姆修自行车时,林涛来看他。

2、You can’t do your homework while you’re watching TV.你不能一边看电视一边做家庭作业。

(三)、另外,when和while的区别还在于:while引导的时间状语从句多用进行时态,而when引导的时间状语从句多用一般时态。

when,while和as引导时间状语从句的用法

when,while和as引导时间状语从句的用法

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 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。

因为如果用正在进行时,它表示的就是一段时间而不是一个时间点了。

根据这一点,有的文章补充说:when 从句的动词大多是瞬时动词。

这种说法也可以参照。

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。

英语学习:while,when,as三者引导的时间状语从句

英语学习:while,when,as三者引导的时间状语从句

【导语】时间状语从句算是状语从句中最简单的⼀类,也是我们⽇常⽣活交流中最常⽤的⼀类,虽然难度不⼤,但引导词也不少,仍然有不少同学会弄混那⼏个常见引导词的⽤法,为⼤家带来as,when,while这⼏个词的辨析⽅法,⼀起看看吧。

三者可表⽰“当……时候”,区别如下:(1) 若主句表⽰的是⼀个短暂性动作,从句表⽰的是⼀个持续性动作,三者都可⽤:He fell asleep when [while, as] he was reading. 他看书时睡着了。

【注】as ⽤于引出⼀个持续性动词表⽰“在……期间”时,其谓语通常只能是那些含有动作(action)和发展(development) 意味的动词,⼀般不能是那些不⽤于进⾏时态的动词(如 be, seem, love, want, agree, see, know, have 等),所以下⾯⼀句中的 while 不能换为 as:A:I’m going to the post office. 我要去邮局。

B:While you’re there, can you get me some stamps? 当你在邮局时,能帮我买⼏张邮票吗?(2) 若主、从句表⽰两个同时进⾏的持续性动作,且强调主句表⽰的动作延续到从句所指的整个时间,通常要⽤ while:Don’t talk while you’re eating. 吃饭时不要说话。

I kept silent while he was writing. 在他写的时候,我默不作声。

但是,若主从句表⽰的两个同时进⾏的动作含有“⼀边…⼀边”之意思,通常⽤ as:She sang as she went along. 她边⾛边唱。

(3) 若从句是⼀个短暂性动作,主句是⼀个持续性动作,可⽤ as / when 但不⽤ while:It was raining hard when [as] we arrived. 我们到达时正下着⼤⾬。

初中英语:对比when与while引导的时间状语从句

初中英语:对比when与while引导的时间状语从句

她总会寻求我的帮助。

He was fond of swimming when (he was) yet a child. 他还是孩子时,就喜欢
游泳。

He cut himself while (he was) shaving. 他在刮胡子时刮伤了自己。

4.在when和while引导的时间状语从句中,当主句和从句的主语不一致,但
是属于泛指意义的代词you时,从句中的主语和be动词也可省略。

例如:When (you are) in Rome, do as the Romans do. 入乡随俗。

A good way to master English is to spend holidays in English speaking coun-tries, and while (you are) there, talk to native speakers. 掌握英语的一个好方法是
在说英语的国家度假,当你在那里时,与英语母语人士多交谈。

5.在when和while引导的时间状语从句中,当从句和主句的主语不一致,但
是从句主语和主句中的宾语一致时,从句中的主语和be动词也可省略。

例如:He told me to remain silent when (I was) not asked. 当(我)没有被问到时,
他告诉我保持沉默。

She told her son not to talk while (he was) eating. 她告诉她儿子在(他)吃饭
时不要说话。

7。

(完整word版)when和while用法小结

(完整word版)when和while用法小结

(完整word版)when和while用法小结连词while的用法连词while的用法有好几种,使用时不可掉心轻心,它大数有以下几种用法:1、表示时间,意思是“当……的时候”,while可以位于句首,也可以位于句中。

我们在看电视时,她一个人在房间里读小说。

,the telephone rang . 他正在整理行装,电话铃响了。

,she fell asleep . 她听着收音机睡着了。

While引导从句时,如主句和从句的主语一致,从句的谓语又含有be,那么从句的主语和be可省略,While 后可直接跟现在分词、名词、形容词或介词短语。

a. We are students while ( we are ) serving as teachers. 我们一面当老师,一面当学生。

b. While (he was )yet a youth he gained many prices. 当他还是个青年时,他就多次获奖。

c. She never dreams 她睡着时从来不做梦。

d. Tom had an accident 在来这儿的途中,汤姆出了事故。

2、表示对比或转折,意思是“而”,这时,While一般位于句中,如:Kate was dressed in green while Jenny was dressed in red .凯特穿绿色衣服,而詹妮穿绿色衣服。

She likes singing and dancing while her brother would rather read novels …, 而她弟弟喜欢小说。

Young people are like the sun rising in the east while old people are like the sun setting in the west .年轻人犹如旭日东升,而老年人犹如日薄西山。

a. She though I was talking about her daughter , in fact , I was talking about my daughter .(NMET’95)A. whomB. whereC. whichD. whileb. I do every single bit of housework my husband Bob just does the dishes now and then .[04广西] A.since B.while C.when D.as3、表示让步,通常用在句首,意思是“尽管”、“虽然”,如:While he had a handsome income, h e couldn’t afford to buy a piano.他虽然收入不少,但卖不起钢琴。

while引导时间状语从句

while引导时间状语从句

while引导时间状语从句while引导的时间状语从句,表示动作在进行,所以用进行时。

从句一般情况下用进行时,主句也用进行时,但从句主句的时态也需要根据不同的主从句类型确定。

1、while引导时间状语从句while可以引导时间状语从句,在句中的意思是“当...时候,在...期间”,此时与when的用法相似。

但是,while在引导时间状语时,从句的谓语动词只能是表示延续性的动词。

2、while引导让步状语从句while引导让步状语从句时在句中的意思是“虽然,尽管”。

while引导的让步状语从句通常放在主句之前。

3、引导条件状语从句相当于as long as,译作“只要”。

例如:While there is life,there is hope。

有生命,就有希望。

4、引导原因状语从句相当于since,有“既然”的意思。

例如:You'll never save any money while you're so extravagant。

你这么奢侈,永远存不下钱来。

5、连接并列句表示对比,相当于whereas,译作“而”/“可是”。

例如:Motion is absolute while stagnation is relative。

运动是绝对的,而静止是相对的。

拓展资料:when和while引导时间状语从句的基本区别(一)、when,while都有“当……时候”的意思。

when既可表示某一点时间,也可以表示某一段时间。

在when引导的时间状语从句中,其谓语动词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其后发生。

例如:1、I was just reading a book when she came into my room.她走进我房间时,我正在看书。

2、Were you writing when the teacher came in?老师进来的时候,你在写信吗?3、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。

while和when引导的时间状语从句主句用一般时

while和when引导的时间状语从句主句用一般时
I am cooking while Jane is practicing. 我在做饭的时候简正在练习。
当此句改变主从句的位置时,则用 when 引导。 When the teacher came in,we were talking They were sweeping the floor when the teacher came in. 老师进来时(这一时刻),他们在擦地板。 While they were sweeping the floor,the teacher came in. 他们正擦地板时(这段时间),老师进来了。
13.He ____ some cooking at that time, so he _____ me
a. did, heard b. did, didn't hear c. was doing, heard
d. was doing, didn't hear
14.This time yesterday jack _____ his bike. He _____ TV
a. helps
b. would help
c. was helping
d. is helping
11.While mother _______ some washing, I _____ a kite for Kate.
a. did, made making
b. was doing, made c. was doing, was making d. did, was
a. repaired, didn't watch
b. was repairing, watched
c. repaired, watched
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jumping with a dog. 6. I was cleaning my room When the fire broke
out,
Exercises
7. I was walking in the street when the accident happened.
8. When you have a meeting, you should turn off your mobile phone.
Unit3 What were you doing when the UFO arrived?
八道沟镇中学 赵媛霖
过去进行时的概念及构成
概念:表示过去某一时刻或某段时间正在进行 的动作 构成:主语+was/were+doing sth+时间状语
指示词:then、 at that time、once等连用,或 者用另一动作来表示过去的时间。
The weather was fine while we were in Beijing. She called while I was out. 如果主句的动作在从句的动作过程中发生,从句常用
进行时,如: While we were swimming someone stole our clothes Don’t talk so lould while others are working.
如:Mary was having dinner when I saw her. The boy was still sle
yesterday evening.
When与while引导的时间状语从句
While表示“在…时候”、“在…期间”。它强调主句 的动作与从句的动作同时发生,或主句的动作发生在 从句的动作过程中。While从句必须是表示动作或状态 的延续性动词。如:
Summary
1.When可指时间点,又可指时间段,从句 中可用延续性动词,也可用非延续性动 词。
2.While总是指一个时间段,从句中必须用 延续性动词。
3.统一时态:主句过去式,从句也是过去 式。
Exercises: fill with “while” or “when”
1. While May was talking on the phone,her sister walked in
when和while的用法与区别
1、延续性动词与非延续性动词
延续性动词指动作可以延续一段时间,而不是瞬间结束。
如:work study drink eat 等
非延续性动词指动作极为短暂,瞬间结束。
如:start begin hit jump knock等
When与while引导的时间状语从句
When表示”当…时候”。从句中既可以用延续性动词, 又可以用非延续性动词,这些动词既可以表示动作, 又可以表示状态。从句中的动作既可和主句动作同时 发生,又可在主句动作之前或之后发生。
up suddenly.
谢谢观赏
What are dreams? Dreams are one of those things that keep you going and happy.
梦想是什么? 梦想是让你感到坚持就是 幸福的东西。
9. When you have PE class, you should wear sports shoes.
10. While I was doing my homework, the phone rang. 11. While it was raining, the plane took off. 12. While the teacher was speaking to class, he stood
2. When Rita bought her new dog,it was wearing a little coat.
3. When I saw Carlos , he was singing louldly. 4. While I was dancing , he was singing louldly. 5. When Linda finally saw David, he was
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