初中英语过去进行时(when-while用法)

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英语过去进行时的用法

英语过去进行时的用法

过去进行时的用法一、过去进行时的时间状语1. when 和while引导的状语从句中,强调某个动作正在进行的过程中时要用进行时态,while 表示一段时间,因此它所引导的状语从句中,谓语动词常用进行时态,如:When/While we were having supper, the light went out. 我们正在吃饭时灯熄灭了。

2. when用作并列连词时,主句常用进行时态,从句则用一般过去时,表示主句动作发生的过程中,另一个意想不到的动作发生了。

如:I was walking in the street when someone called me. 我正在街上走时突然有人喊我。

二、下面几种情况不用一般过去时而要用过去进行时:1. 表示过去某一阶段暂时性的习惯动作时。

如:Tom was getting up at six o’clock every day that week. 汤姆那一周里每天都是六点钟起床。

2. 与always连用表示赞美,厌烦等感情色彩时。

如:John was always coming to school late. 约翰上学总是迟到。

Lei Feng was always doing good deeds for the people. 雷锋总是为人民做好事。

3. 用来描写故事发生的情景时。

如:It was a dark night. The wind was blowing hard and the rain was falling heavily. A PLA man suddenly appeared on the river bank. He wanted to cross the river.那是一个漆黑的夜晚,风刮得很厉害,雨下得很大,一个解放军战士突然出现在河岸上,他想过河去。

4. when作并列连词,表示“(这时)突然”之意时,第一个并列分句用过去进行时,when引导的并列分句用一般过去时。

2020年中考英语知识点之区分when与while的用法

2020年中考英语知识点之区分when与while的用法

2020年中考英语知识点之区分when与while的用法区分when 与while的用法。

when后即可以加时间点,又可以加时间段,while 只能加时间段。

when引导的句子即可以是延续性动词,也可以是短暂动词,while 后只能加延续性动词。

when 引导的句子即可以是一般时态,也可以是进行时态,while 后通常加进行时态。

主从句都是延续性动词,都用过去进行时的时候,多用while 引导状语从句。

即be doing sth. while be doing sth.
Lily was singing while Lucy was dancing.
反而时间状语从句。

结构为be doing sth. when 译为正在做某事时突然,此句型不再强调主句,反而强调了时间状语从句所表达的意思,因而叫做反而时间状语从句。

I was taking a walk in the park when it began to rain.(我正在散步的时候突然下雨了。


while 还可表示然而,起转折作用。

I like pop music while my brother likes folk music.。

过去进行时、when和while引导时间状语从句的区别

过去进行时、when和while引导时间状语从句的区别

过去进行时过去进行时表示过去某一时刻或者某段时间正在进行或发生的动作,常和表过去的时间状语连用,如:1. I was doing my homework at this time yesterday.昨天的这个时候我正在做作业。

2. They were waiting for you yesterday.他们昨天一直在等你。

3. He was cooking in the kitchen at 12 o'clock yesterday.昨天12点,他正在厨房烧饭。

过去进行时的构成:肯定形式:主语+was/were+V-ing否定形式:主语+was not (wasn't)/were not (weren't)+V-ing疑问形式:Was/Were+主语+V-ing。

基本用法:1. 过去进行时表示过去某一段时间或某一时刻正在进行的动作。

常与之连用的时间状语有,at that time/moment, (at) this time yesterday (last night/Sunday/week…), at+点钟+yesterday (last night / Sunday…),when sb. did sth.等时间状语从句,如:1)What were you doing at 7p.m. yesterday?昨天晚上七点你在干什么?2)I first met Mary three years ago. She was working at a radio shop at the time.我第一次遇到玛丽是在三年前,当时她在一家无线电商店工作。

3)I was cooking when she knocked at the door.她敲门时我正在做饭。

2. when后通常用表示暂短性动词,while后通常用表示持续性动词,而while所引导的状语从句中,谓语动词常用进行时态,如:When the car exploded I was walking past it. = While I was walking past the car it exploded.3. when用作并列连词时,主句常用进行时态,从句则用一般过去时,表示主句动作发生的过程中,另一个意想不到的动作发生了。

初中语法过去进行时及when和while的区别

初中语法过去进行时及when和while的区别

(一)定义过去进行时,是表示过去某个具体时刻正在进行的事情或动作。

(二)结构was/were +doing (现在分词)(三)用法1、过去进行时表示过去某段时间内持续进行的动作或者事情。

常用的时间状语this morning, the whole morning, all day yesterday, from nine to ten last evening, when, while例如:We were watching TV from seven to nine last night.昨天晚上七点到九点的时候我们在看电视。

2. 过去进行时可以表示在过去某个时间点发生的事情。

时间点可以用介词短语、副词或从句来表示。

如:When I saw him he was decorating his room.当我看见他的时候他正在装饰房间。

(when从句表示时间点)3. 在复合句中,如果主要动作和背景动作都是延续的或同时发生的,那么主从句的动词都可用过去进行时。

例如:While he was waiting for the bus, he was reading a newspaper.他边等车边看报。

(两个动作都是延续的)He was cleaning his car while I was cooking.他擦车时我在做饭。

(两个动作同时进行)4. 通常不能用于过去进行时的动词主要有:agree, be, believe, belong, care, forget, hate, have(拥有), hear, know, like, love, mean, mind, notice, own, remember, seem, suppose, understand, want, wish等。

例如:误:I was knowing the answer.正:I knew the answer. 我知道答案。

英语中when和while的用法区详细讲解

英语中when和while的用法区详细讲解

1.1 时间连词when的用法特点一般来讲,when的意思相当于at that time(在……时刻),因此从句的谓语动词通常是短暂动词,表示某一时刻的动作。

不过,when引导的从句也可接延续动词(continuous verb),这时从句往往用过去进行时态,表示某一时间段内发生的动作。

有关连词when常见的主从句时态搭配举例说明如下。

时间从句所表达的时间通常是过去和将来。

首先,来看when引导从句表示过去动作的四组时态搭配。

一、主句一般过去时+从句一般过去时1I started my dinner when he left. 他走了之后,我才开始吃晚饭。

2He left when I got there. 我到了以后,他才离开。

从以上例句可以看出,若主从句都用一般过去时,则表示从句动作先发生。

所以,从句还可以用过去完成时。

于是,就有了下面的第二种时态搭配关系。

二、主句一般过去时+从句过去完成时3I started my dinner when he had left.4He left when I had got there.这两句的从句用了过去完成时,更强调了从句动作先发生,意思与上面两句区别不大。

在表示过去的动作中,when引导的从句还有一个重要的时态搭配,即一般过去时(simple past)与过去进行时(past continuous)搭配。

注意,此时的时态搭配与主句、从句没有关系,而只与动作的长短有关系。

短暂动作用一般过去时,延续动作用过去进行时。

这一时态配套使用所表示的意义是:在一个延续背景动作的过程中突然发生了一个短暂动作。

既然此时的时态搭配与主从句没有关系,因此可以组合成下面两种时态搭配,即“主句过去进行时+从句一般过去时”,或“主句一般过去时+从句过去进行时”,即:1.主句一般过去时+从句过去进行时5The doorbell rang when I was telephoning.妙语点睛这里的短暂动作rang用一般过去时,延续动作telephone用过去进行时。

语法总结--过去进行时(全)

语法总结--过去进行时(全)

过去进行时(Past Progressive Tense)过去进行时学习方法用法:过去进行时,是表示过去某时正在进行的状态或动作。

一、过去进行时的主要用法是描述一件事发生的背景;一个长动作发生的时候,另一个短动作发生。

常用的时间状语when, while例如:1.My brother fell while he was riding his bicycle . 我哥哥骑自行车的时候从车上摔下来。

2.It was raining when they left the station. 他们离开车站的时候天正在下雨。

3.They left the station while it was raining . 天正在下雨的时候他们离开了车站。

4.When I got to the top of the mountain, the sun was shining. 当我到达山顶的时候,阳光灿烂。

二、过去进行时可以表示在过去某个时间点发生的事情。

时间点可以用介词短语、副词或从句来表示。

常用的时间状语:this morning, the whole morning, all day yesterday, from nine to ten last evening, 例如:1.What was she doing at nine o'clock yesterday? 昨天晚上九点她在做什么?(介词短语表示时间点)2.When I saw him he was decorating his room. 当我看见他的时候他正在装饰房间。

(when从句表示时间点)3.We were watching TV from seven to nine last night. 昨天晚上七点到九点的时候我们在看电视。

4.What was he researching all day last Sunday? 上周日他一整天都在研究什么?三、在复合句中,如果主要动作和背景动作都是延续的或同时发生的,那么主从句的动词都可用过去进行时。

(完整版)过去进行时when和while

(完整版)过去进行时when和while

过去进行时的讲与练一、含义:(1)过去进行时表示过去某一时刻或者某段时间正在进行或发生的动作,常和表过去的时间状语连用。

(2) 过去进行时表示感情色彩与现在进行时相似,过去进行时也可表示满意、称赞、惊讶、厌恶等感情色彩,也通常与always,forever等副词连用。

e.g:They were always quarrelling. 他们老是吵架。

二、过去进行时的构成和用法:肯定形式:主语+was/were+doing否定形式:主语+was not (wasn't)/were not (weren't)+doing疑问形式:Was/Were+主语+doing。

常与之连用的时间状语有,at that time/moment, (at) this time yesterday (last,when 和while引导的时night/Sunday/week…), at+点钟+yesterday (last night / Sunday…)间状语从句。

三、when/while引导的时间状语从句①由when/while 引导的时间状语从句。

常用句型:一般过去时的句子);a. 主句(主语+ was/were + doing … when +表示主句动作发生的过程中,另一个意想不到的动作发生了。

We were talking when the teacher came in.=While we were talking, the teacher came in.);主语+ was/were + doing … b. 主句(主语+ was/were + doing … while +主句与从句的动作都是延续性动词或同时发生的,两句都用过去进行时的时候,多用while引导★★★注意:when和while的区别:都意为“当……时候”,when引导的句子谓语动词用短暂性动词或延续性动词都行;但while引导的句子谓语动词只能用延续性动词,不能用短暂性动词。

初中英语过去进行时(when-while用法)

初中英语过去进行时(when-while用法)

初中英语过去进行时(w h e n-w h i l e用法) -CAL-FENGHAI.-(YICAI)-Company One1Summary 3Past Continuous Tense过去进行时总结I. Definition 时态含义表示过去某一时刻或过去一段时间内正在进行的动作。

II. Time words 时间标志词1.then, at that time, this time yesterday, at 6 o’clock yesterday ...2.when/ while/ (just) as引导的时间状语从句III. Structure 动词结构was/ were + doing引导的时间状语从句在过去进行时态中的用法区别1.when 既可以和短暂性动词连用,也可以和连续性动词连用,句中一般翻译为“当......时候”/“就在那时”。

a.Someone knocked at the door when I was having breakfast.b.I was taking a bath when the telephone rang.2.while 只可以和连续性动词连用句中一般翻译成“当......时候”(=when)/ “然而”(强调前后两个动作同时进行)a.He cut himself while he was shaving.b.My wife was cooking the dinner while I was working in the garden.3.(just) as更强调“随着”,所引导的从句动作一般与主句动作伴随着发生。

a.Just as I was opening the front door, the telephone rang.b.The children were singing as they went home.IV. Exercises 练习( ) 1. We were reading the newspaper suddenly the light went out.A.whenB. whileC. beforeD. after( ) 2. While she TV in the sitting room, the bell .A.watches; rings C. was watching; rangB. is watching; rang D. watched; was ringing( ) 3. She herself while she off the bus.A.hurt; was getting C. hurt; is gettingB.Hurts; was getting D. hurts; is getting( ) 4. When he , I a bath.A.arriving; was having C. arrived; am havingB.arrived; was having D. arrives; was having( ) 5. When I saw her on the way here, she a magazine.A.readsB. is readingC. was readingD. will read6.昨天晚上8点你正在做什么?7.我到家的时候,妈妈正在厨房做饭。

英语中when和while的用法区详细讲解

英语中when和while的用法区详细讲解

1.1when一般来讲,when的意思相当于at that time(在……时刻),因此从句的谓语动词通常是,表示某一时刻的动作。

不过,when引导的从句也可接(continuous verb),这时从句往往用过去进行时态,表示某一时间段内发生的动作。

有关连词when常见的主从句时态搭配举例说明如下。

时间从句所表达的时间通常是过去和将来。

首先,来看when引导从句表示过去动作的四组时态搭配。

1I my dinner when he left. 他走了之后,我才开始吃晚饭。

2He when I there. 我到了以后,他才离开。

从以上例句可以看出,若主从句都用一般过去时,则表示从句动作先发生。

所以,从句还可以用过去完成时。

于是,就有了下面的第二种时态搭配关系。

3I my dinner when he4He when I there.这两句的从句用了过去完成时,更强调了从句动作先发生,意思与上面两句区别不大。

在表示过去的动作中,when引导的从句还有一个重要的时态搭配,即一般过去时(simple past)与过去进行时(past continuous)搭配。

注意,。

这一时态配套使用所表示的意义是:在一个延续背景动作的过程中突然发生了一个短暂动作。

既然此时的时态搭配与主从句没有关系,因此可以组合成下面两种时态搭配,即“主句过去进行时+从句一般过去时”,或“主句一般过去时+从句过去进行时”,即:15The doorbell when I这里的短暂动作rang用一般过去时,延续动作telephone用过去进行时。

门铃响的时候,我正在打电话。

如上所述,这个句子也可以换成“主句过去进行时+从句一般过去时”这样的时态搭配,即:26I when the doorbell 我当时正在打电话,突然门铃响了。

注意:由“主句一般过去时+when+从句过去进行时”变成“主句过去进行时+when+从句一般过去时”,此时when的意思发生了改变,即由during the time(当……时候)变成了at the time(正在那时)。

when 和while的用法区别

when 和while的用法区别

when 和while的用法区别①when是at or during the time that, 既指时间点,也可指一段时间;while是during the time that,只指一段时间,因此when引导的时间状语从句中的动词可以是终止性动词,也可以是延续性动词,而while从句中的动词必须是延续性动词。

②when 说明从句的动作和主句的动作可以是同时,也可以是先后发生;while 则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生。

③由when引导的时间状语从句,主句用过去进行时,从句应用一般过去时;如果从句和主句的动作同时发生,两句都用过去进行时的时候,多用while引导,如:a. When the teacher came in, we were talking.当此句改变主从句的位置时,则为:While we were talking, the teacher came in.b. They were singing while we were dancing.④when和while 还可作并列连词。

when表示“在那时”;while表示“而,却”,表对照关系。

如:a. The children were running to move the bag of rice when they heard the sound of a motor bike.孩子们正要跑过去搬开那袋米,这时他们听到了摩托车的声音。

b. He is strong while his brother is weak.他长得很结实,而他弟弟却很瘦弱。

具体你可以参考这一段。

when,while,as引导时间状语从句的区别when,while,as显然都可以引导时间状语从句,但用法区别非常大。

一、when可以和延续性动词连用,也可以和短暂性动词连用;而while和as只能和延续性动词连用。

①Why do you want a new job when youve got such a good one already?(get 为短暂性动词)你已经找到如此好的工作,为何还想再找新的?②Sorry,I was out when you called me.(call为短暂性动词)对不起,你打电话时我刚好外出了。

过去进行时中“when和while讲解与练习

过去进行时中“when和while讲解与练习

过去进行时中“when和while讲解与练习过去进行时表示过去某一时刻或者某段时间正在进行或发生的动作,常和表过去的时间状语连用,如:1. I was doing my homework at this time yesterday.昨天的这个时候我正在做作业。

2. They were waiting for you yesterday.他们昨天一直在等你。

3. He was cooking in the kitchen at 12 o'clock yesterday.昨天12点,他正在厨房烧饭。

过去进行时的构成:肯定形式:主语+was/were+ V-ing否定形式:主语+was not (wasn't)/were not (weren't)+V-ing疑问形式:Was/Were+主语+V-ing。

基本用法:1. 过去进行时表示过去某一段时间或某一时刻正在进行的动作。

常与之连用的时间状语有,at that time/moment, (at) this time yesterday (last night/Sunday/week…), at+点钟+yesterda y (last night / Sunday…),when sb. did sth.等时间状语从句,如:1)What were you doing at 7p.m. yesterday?昨天晚上七点你在干什么?2)I first met Mary three years ago. She was working at a radio shop at the time.我第一次遇到玛丽是在三年前,当时她在一家无线电商店工作。

3)I was cooking when she knocked at the door.她敲门时我正在做饭。

2.when后通常用表示暂短性动词,while后通常用表示持续性动词,而while所引导的状语从句中,谓语动词常用进行时态,如:When the car exploded I was walking past it. = While I was walking past the car it exploded.3.when用作并列连词时,主句常用进行时态,从句则用一般过去时,表示主句动作发生的过程中,另一个意想不到的动作发生了。

8B过去进行时when,as和while的区别

8B过去进行时when,as和while的区别
2) We could come to see the film yesterday while Tom lost the tickets.
• ②when 说明从句的动作和主句的动作可以是同 时,也可以是先后发生;while 则强调主句的动 作在从句动作的发生的过程中或主从句两个动作 同时发生。
• ③由一般过去时;如果从句和主句的动作同时发生,两 句都用过去进行时的时候,多用while引导,如:
while连接的句子,后面必须用进行时(现在/ 过去进行时)
1) A car hit her while she was thinking about a question.
2) The books fell off from the shelf while they were listening to the radio.
while表示“而,却”,表对照关系。如: • a. The children were running to move the bag of rice
when they heard the sound of a motor bike. • 孩子们正要跑过去搬开那袋米,这时他们听到了摩托车的
声音。 • b. He is strong while his brother is weak. • 他长得很结实,而他弟弟却很瘦弱。
3) While we are playing football, a noise comes from downstairs.
小结:用while 和when 填空,看看它们后面的句 子的时态。如果是过去时,必须用when. 如果是进 行时,必须用while(没有while选项的时候用 when)
小结:在作“当…时候”时,when可以替换 while.

when与while引导时间状语从句的区别

when与while引导时间状语从句的区别
It was snowing when we got to the airport. 我们到达机场时, 天正下着雪。
My key dropped on the ground when I was
walking in the park. 我在公园散步时, 钥匙掉在了地上。
while
while引导的时间状语从句常指一个时间 段,从句中的动词必须为延续性动词。 while有时还可表示主句的动作与从句 的动作同时发生。
4. Now he __i_s_r_e_a_d_in_g__ (read) and __w__r_it_in__g__.
B. Translate these sentences into English.
1. 上课铃响时,你在干什么? What __w_e_r_e___ you _d_o_i_n_g_when the class bell rang?
1. What _w__er_e__ (be) you _d_o_i_n_g_ (do) when he arrived?
2. Jim__w_a_s_s_l_e_e_p_in_g___ (sleep) when I came in.
3. They _w_e_r_e_w__a_tc_h_i_n_g_ (watch) TV at 8:00 yesterday evening.
when and while
Both of them mean ”当…… 的时候”.
Are they the same? No !!!
when
when引导的时间状语从句可以表示一个时间 点,也可以表示一个时间段。从句中可以用
短暂性动词,也可以用延续性动词。从句中 的动作既可与主句的动作同时发生, 又可在主句的动作之前或之后发生。

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。

例如:1、While they were talking , the bell rang.正在他们谈话的时候,上课铃响了。

2、I was doing my homework when my mother came back home yesterday evening.昨天晚上妈妈回家的时候,我正在做家庭作通过观察,我们可以这样理解:when引导的从句里动作发生的时间相对主句动作发生的时间要短些;while引导的从句里的动作发生的时间相对主句而言更长些。

when和while区别以及过去进行时(三)

when和while区别以及过去进行时(三)

(三)when, while区别以及过去进行时语法:1.连词when 和while的用法。

(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,两者都可以用。

He fell asleep when / while he was reading.(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.(3)若从句是一个短暂性动作,主句是一个持续性动作,则用when而不用while。

It was raining hard when we arrived.(4)when 可作并列连词,表示“这时(突然)”;while也可以用作并列连词,表示“然而;却(对比)”。

We were about to start when it began to rain. 我们正要出发,这时天开始下雨了。

He likes coffee, while she likes tea. 他喜欢咖啡,而她却喜欢茶。

2.过去进行时。

(1)定义:表示过去某个具体时刻正在进行的事情或动作。

(2)结构: was / were + doing (现在分词)(3)用法①:表示过去某段时间内持续进行的动作或事情。

We were watching TV from seven to nine last night.②表示在过去某个时间点发生的事情。

What was she doing at nine o’clock yesterday?专项练习:一、选择题。

()1.Tom rushed into the house his mother was cooking.A. asB. beforeC. whileD. after()2. -----Mom, shall we have supper now?-----Oh, we won’t have supper your dad comes back.A. untilB. sinceC. whileD. after()3.-----Tom, you look tired this morning. What’s wrong?-----I was so busy that I didn’t go to bed 12 o’clock last night.A. untilB. whenC. thoughD. unless()4. Jack likes reading a newspaper he is having breakfast.A. andB. whileC. because()5. -----Ring me up you come to my house, will you?-----Sure, I will.A. thoughB. whileC. beforeD. until()6. Eddie was sleeping Millie was reading a magazine.A. untilB. whileC. beforeD. after()7. the 632-meter Shanghai Tower is finished, it will be the second tallest building in the world.A. WhenB. SinceC. BeforeD. Unless()8.Mary a dress when she cut her finger.A. madeB. is makingC. was makingD. makes ()9. When Jim’s mother came in, he his homework.A. is doingB. has doneC. was doing()10. -----What did you do yesterday evening, Gina?-----I Titanic 3D in the City Cinema.A. watchB. watchedC. am watchingD. will watch ()11. Paul and I tennis yesterday. He did much better than I.A. playB. will playC. playedD. are playing()12. -----I call you at 6 o’clock yesterday evening, but nobody answered.-----I’m sorry. I my friend downloaded the movie Kung Fu Panda 2 when the telephone rang.A. would helpB. helpedC. was helping()13. Yesterday evening, I along the street when I suddenly met my math teacher.A. walkB. walkedC. was walkingD. am walking()14. The girl with two cats in the yard when the earthquake happened.A. was playingB. is playingC. are playingD. were playing()15. -----What did Mr. Smith do before he came to China?-----He in a car factory.A. workedB. worksC. is workingD. will work综合练习:一、完形填空。

8B过去进行时when,as和while的区别

8B过去进行时when,as和while的区别
While 还有 “然而”的意思。此时不能用 when 代替。 1) He has a good chance to be the famous player while he wasted it.
பைடு நூலகம்
2) We could come to see the film yesterday
while Tom lost the tickets.
• 如果表示从句的动作在主句的动作“之前”或“之后”发 生时,多用when(=after), 不用as或 while。此外, when还含有“at that moment”的意思(= and then),引起的句子不能放在句首,也不能用as, while 来替换。例如:
• He was about to leave when the telephone rang. 他正要离开,忽然电话铃响了。
• As soon as he gets home, he will notice you.
2020/11/30
14
指紧接着发生的两个短动作,主从句都用一 般过去时
1)He took out his English books as soon as he sat down
2) We ate a lot as soon as we got home. 3) As soon as she came out of the house,
3) The light went off when they were talking.
2020/11/30
6
while连接的句子,后面必须用进行时(现在/ 过去进行时)
1) A car hit her while she was thinking about a question.

Module8过去进行时及whenwhile引导的过去时间的状语从句区别课件英语八年级上册(完整版)

Module8过去进行时及whenwhile引导的过去时间的状语从句区别课件英语八年级上册(完整版)

when 也可“在……时期”,它可兼指“时间点”与“时间段”,
所引导的从句的动词既可以是终止性动词,也可是持续性动词。
当...的时候
They were drawing a tiger when the teacher came in.
延续性的动作
短暂性的动作
The teacher came in when they were drawing a tiger.
while 只指"时间段",不指"时间点",从句的动词只限于持续性动词。
My aunt was watching TV last night, while my uncle was playing games.
延续性的动作
延续性的动作
主句:过去进行时
从句:一般过去时
We were talking when the teacher came in. (强调老师突然进来) (When the teacher came in ,we were talking .)
while
说明一个动作正在进行的同时,另一个动作也在进行,强调两个动作同时性
They were singing while we were dancing . (强调唱歌跳舞同时发生)
区别2 搭配的 时间不同+ 动词不同
When后可长亦可短,while之后只能长 若是两个都为长, while 来把纽带当
当……的时候 (was/were+v-ing)
While 当……的时候
一般过去时 (v-ed)
While 同时
过去进行时 (was/were+v-ing)
从句 一般过去时(v-ed)

when 和while的用法区别

when 和while的用法区别

when 和while的用法区别①when是at or during the time that, 既指时间点,也可指一段时间;while是during the time that,只指一段时间,因此when引导的时间状语从句中的动词可以是终止性动词,也可以是延续性动词,而while从句中的动词必须是延续性动词。

②when 说明从句的动作和主句的动作可以是同时,也可以是先后发生;while 则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生。

③由when引导的时间状语从句,主句用过去进行时,从句应用一般过去时;如果从句和主句的动作同时发生,两句都用过去进行时的时候,多用while引导,如:a. When the teacher came in, we were talking.当此句改变主从句的位置时,则为:While we were talking, the teacher came in.b. They were singing while we were dancing.④when和while 还可作并列连词。

when表示“在那时”;while表示“而,却”,表对照关系。

如:a. The children were running to move the bag of rice when they heard the sound of a motor bike.孩子们正要跑过去搬开那袋米,这时他们听到了摩托车的声音。

b. He is strong while his brother is weak.他长得很结实,而他弟弟却很瘦弱。

when,while,as引导时间状语从句的区别when,while,as显然都可以引导时间状语从句,但用法区别非常大。

一、when可以和延续性动词连用,也可以和短暂性动词连用;而while和as只能和延续性动词连用。

①Why do you want a new job when youve got such a good one already?(get 为短暂性动词)你已经找到如此好的工作,为何还想再找新的?②Sorry,I was out when you called me.(call为短暂性动词)对不起,你打电话时我刚好外出了。

when 与 while 用法

when 与 while 用法

when 与while 用法解析连接词when与while是一对常与过去进行时合作的twins。

但正如世界上没有两片完全相同的树叶一样,when与while在有着某些相似之处的同时,彼此也各有一些区别于对方的截然不同的“独特个性”。

Do you want to know the differences between them?请看——● when 解析版〔引导时间状语从句〕具体地说,它有以下几种含义:1.表明一个动作发生的时候,另一个动作正在进行之中。

例如:When the teacher came into the classroom ,we were reading English.当老师走进教室时,我们正在读英语。

2.表明当某一动作正在进行时,另一动作发生了。

如:When Kate was flying a kite,she found a wallet lying on the ground.凯特正在放风筝时,她发现地上有个钱包。

〔特别提示〕当when从句放在主句之后时,它更强调某一动作的突然性,此时的when相当于and then,and suddenly,just at that time。

如;1.We were watching TV when the telephone rang.(=We were watching TV and suddenly the telephone rang.)我们正在看电视,(突然)电话铃响了。

试比较:When we were watching TV,the telephone rang.我们正在看电视时,电话铃响了。

2.The boys were playing football when it began to rain.男孩子们正在踢球时,(不料)开始下雨了。

3.I was taking a walk when I came across Lily.我正在散步时,(没想到)遇见了莉莉。

while前后动词的用法

while前后动词的用法

while前后动词的用法一、while 句型中前后动词的基本用法1.1 while 连接过去持续性动作在 while 句型中,when 后面跟的是一个过去的持续性动作。

这个过去持续性动作会被 while 引导的动作所打断或发生改变。

例如:I was watching a movie while she entered the room.(当她走进房间时,我正在看电影。

)1.2 while 连接两个同时进行的动作在 while 句型中,when 后面跟的是一个正在进行的动作,并与另一个正在进行的动作同时发生。

例如:She was baking a cake while he was cleaning the house.(他正忙着打扫房子,而她则正在烘烤蛋糕。

)二、while 前后动词时态和语态搭配2.1 过去进行时在while 句型中,常用过去进行时表示当某一行为或状态在某段时间内发生时,另一行为或状态也在同时进行。

例如:He was studying in the library while his friends were playing basketball.(他正在图书馆学习,而他朋友们则在打篮球。

)2.2 现在进行时在 while 句型中,现在进行时可表示两个现阶段都有可能达到目标或者两个对立情况都可能实现。

例如:She is studying law while working part-time.(她正在兼职工作同时学习法律。

)2.3 过去完成时在 while 句型中,过去完成时常用于描述两个过去事件,其中一个事件在前发生而另一个在其后面发生。

例如:I had eaten dinner before she arrived home.(她到家之前,我已经吃完晚饭了。

)三、while 前后动词的不同语态3.1 主动语态在 while 句型中,主动语态常用来表示两个同时进行的主动行为。

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Summary 3
Past Co nti nuous Tense 过去进行时总结
I. Defin itio n 时态含义
表示过去某一时刻或过去一段时间内正在进行的动作。

II. Time words 时间标志词
1. then, at that time, this time yesterday, at 6 o ' clock yesterday ...
2. when/ while/ (just) as 引导的时间状语从句
III. Structure 动词结构
was/ were + doing
♦ Whe n/ while/ (just) as 引导的时间状语从句在过去进行时态中的用法区别
1. when既可以和短暂性动词连用,也可以和连续性动词连用,
句中一般翻译为“当...... 时候” / “就在那时”。

a. Some one kno cked at the door whenI was hav ing breakfast.
b. I was tak ing a bath whenthe teleph one rang.
2. while只可以和连续性动词连用
句中一般翻译成“当...... 时候”(=wheri) / “然而”(强调前后两个动作同时进行)
a. He cut himself while he was shaving.
b. My wife was cooking the dinner while I was working in the garden.
3. (just) as 更强调“随着”,所引导的从句动作一般与主句动作伴随着发生。

a. Just as I was ope ning the front door, the teleph one rang.
b. The children were singing as they went home.
IV. Exercises 练习
( )1. We were reading the newspaper suddenly the light went out.
A. when
B. while
C. before
)2. While she TV in the sitti ng room, the bell
A. watches; rings C. was watchi ng;
rang
B. is watchi ng;
rang
D. watched; was ringing
)3. She herself while she off the bus.
A. hurt; was gett
ing C. hurt; is gett ing
B. Hurts; was gett
ing D. hurts; is gett
ing
D. after
)4. When he
bath.
A. arriving; was having C. arrived; am having
B. arrived; was having D. arrives; was having
( )5. When I saw her on the way here, she a magazine.
A. reads
B. is reading
C. was reading
D. will read
6. 昨天晚上8点你正在做什么
7. 我到家的时候,妈妈正在厨房做饭。

8. 我在写作业的时候我爸爸正在看报纸
9. 我正要离开前往上海,邮递员来了。

10. 我们正在河里游泳突然天就下雨了。

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