when-while练习题教学教材
when和while的用法解析、练习题及答案(附总结表格)
when和while的用法解析、练习题及答案（附总结表格）一、讲解三例句:1. The girls are dancing while the boys are singing.2. Lucy’s mother is cooking when she gets home.3. When/While Lucy’s mother is cooking, she gets home.二、用when或者while填空1.______ Margo was talking on the phone, her sister walked in.2.______ we visited the school, the children were playing games.3.______ Sarah was at the barber’s, I was going to class.4.______ I saw Carlos, he was wearing a green shirt.5.______ Allen was cleaning his room, the phone rang.6.______ Rita bought her new dog; it was wearing a little coat.7. He was driving along ________ suddenly a woman appeared.8. _____ Jake was waiting at the door, an old woman called to him.9. ______ it began to rain, they were playing chess. 10. She saw a taxi coming ______ the woman was waiting under the streetlight.三、语法while和when都是表示同时，到底句子中是用when还是while主要看主句和从句中所使用的动词是短暂性动作(瞬时动词)还是持续性动作。
最新人教八下Unit5-when和while的用法和区别(共16张PPT)精品课件
when和while拓展(tuò zhǎn) 区分
一、动词(dòngcí)角度 1.When= during the time or at the time 从句中可用延续性1W动he词n可(d指òn时g间cí点),也,又S可u可m指用m时a非r间y延段续,从性句中动可词用(d延ò续ngcí)； 2.While = durin2gWthheilet总im是e性指，动一从词个,时句也间可中段用必,非从须延句用续中性必延动须续词用性。延动续词性动(d词ò。ngcí)。
第十一页，共16页。
应用 (yìngyòng)练
习 when VS while
1. _________ I arrived home, mother was cooking.
2. _________ she was talking , her sister walked in. 2. _________ I found my dog, it was playing with another dog. 4. _________ I was dancing, he was singing loudly.
3统一(tǒngyī)时态:主句过去式,从句也是过去式
第十五页，共16页。
see you next time !
第十六页，共16页。
B. before C. when
2._______ John was watching TV, his wife was cooking.
A.Байду номын сангаасfter
C.While
C.Until
3. He reached the school gate ________ the bell rang.
(汇总)When与while练习题.ppt
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选用when或while填空 1. My wallet dropped on the ground _____ I was walking. 2. ______ I was falling asleep there was a loud knock on the door. 3. ______ he was reading, the telephone rang.
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用when, while填空： 1. I was listening to the radio ______ he came in. 2. _____ the teacher came in, we were talking. 3. _____ he came back, I was doing some washing. 4. I was cooking dinner _______ they came home. 5. He fell asleep ________ he was reading. 6. He asked me a question ______ I was speaking. 7. Jim hurt his arm ______ he was playing tennis. 8. ______ she was waiting for the train, she became very impatient. 9. He was watching TV ______ she was cooking.
4. Were the students listening to the teacher carefully ______ the teacher was giving a lesson?
when和while区别及专项练习-含答案
when和while用法区别专项练习讲解三例句：1. The girls are dancing while the boys are singing.2. Kangkang’s mother is cooking when he gets home.3. When/While Kangkang’s mother is cooking, he gets home.一、用when或者while填空1.______ Margo was talking on the phone, her sister walked in.2.______ we visited the school, the children were playing games.3.______ Sarah was at the barber’s, I was going to class.4.______ I saw Carlos, he was wearing a green shirt.5.______ Allen was cleaning his room, the phone rang.6.______ Rita bought her new dog; it was wearing a little coat.7. He was driving along ________ suddenly a woman appeared.8. _____ Jake was waiting at the door, an old woman called to him.9. He was reading a book ______suddenly the telephone rang.10. ______ it began to rain, they were playing chess.二、用所给动词适当形式填空11. While Jake __________ (look) for customers, he _______ (see) a woman.12. They __________ (play) football on the playground when it _____ (begin) to rain.13. A strange box ________ (arrive) while we _________ (talk).14. John ____________ (sleep) when someone __________ (steal) his car.15. Father still (sleep) when I (get) up yesterday morning.16. Grandma (cook) breakfast while I (wash) my face this morning.17. Mother (sweep) the floor when I (leave) home.18. I (read) a history book when someone (knock) at the door.19. Mary and Alice are busy (do) their homework.20. The teacher asked us (keep) the windows closed.21. I followed it (see) where it was going.22. The students (play) basketball on the playground from 3 to 4 yesterday afternoon. 三、完成下面句子，词数不限1.飞机在伦敦起飞时正在下雨。
when和while的用法和区别演示教学
when和while的用法和区别while和when都是表示同时，到底句子中是用when还是while主要看从句和主句中所使用的动词是短暂性动作（瞬时动词）还是持续性动作。
1、若主句表示的是一个短暂性的动作，而从句表示的是一个持续性动作时，两者都可用。
如：He fell asleep when [while] he was reading. 他看书时睡着了。
I met him when [while] I was taking a walk in the park. 我在公园散步时遇到了他。
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。
如：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。
3、若从句是一个短暂性动作，而主句是一个持续性动作，可以when 但不用while。
如：When he came in, I was listening to the radio. 他进来时，我在听收音机。
It was raining hard when we arrived. 我们到达时正下着大雨。
4、若主、从句表示的是两个同时(或几乎同时)发生的短暂性动作，一般要用when。
如：I thought of it just when you opened your mouth. 就在你要说的时候，我也想到了。
至于什么是短暂性动作，什么是持续性动作，其实有个很简单的规律。
就是如果是进行时态，一般是持续性的。
如果是过去式，一般是短暂性动作。
对于，填写when还是while的问题，通常首先看主句和从句中的时态，再根据以上4个规律来判断填写那个单词。
When和While的区别通常when 后面接一般过去时while 后面接过去进行时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。
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。
when,while,as练习题及答案
when,while,as练习题及答案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, 但又有区别。
一、when 的用法观察下面的句子: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 readinga 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 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。
根据以上的例句，我们可以总结出一点：when 从句中的A事件，相当于主句中B事件发生的时间点。
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从句多数情况下用的是一般过去时，而不用进行时, 而且, when 从句的动词大多是短暂性动词。
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。
例如：When the manager comes here for a visit next week, I’ll talk with him about this.下周，经理来这参观时，我会和他谈谈此事。
When的特殊用法：主句when 从句I was walking along the street when a ball hit me on the head.我正沿着路边着，就在这时一个球打在了头上。
最新unit3-When和while引导的时间状语从句教学讲义PPT
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unit3-When和while引导 的时间状语从句
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。
When与while引导的时间状语从句
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
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
jumping with a dog. 6. I was cleaning my room When the fire broke
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用when或者while填空
1.______ Margo was talking on the phone,her sister walked in.
2.______ we visited the school,the children were playing games.
3.______ Sarah was at the barber's,I was going to class.
4.______ I saw Carlos,he was wearing a green shirt.
5.______ Allen was cleaning his room,the phone rang.
6.______ Rita bought her new dog,it was wearing a little coat.
7.He was driving along ________ suddenly a woman appeared.
8. _____ Jake was waiting at the door, an old woman called to him.
9.He was reading a book ______suddenly the telephone rang.
10. ______ it began to rain, they were playing chess.
11. She saw a taxi coming ______ the woman was waiting under the streetlight.
12. the allien was in the museum,I called the police.
13.The boy was walking down the street a UFO landed.
14. the alien was visiting the museum,the boy called the TV station.
15.I was cleaning my room the fire broke out.
16. Linda shouted his name,some people looked at her.
用所给动词适当形式填空
17.While Jake __________(look) for customers, he _______(see) a woman.
18. They ____________(play) football on the playground when it ______(begin) to rain.
19.A strange box ________(arrive) while we _________ (talk).
20. John ____________(sleep) when someone __________(steal) his car.
21.Father still (sleep)when I (get)up yesterday morning.
22.Grandma (cook) breakfast while I (wash) my face this morning.
23.Mother (sweep)the floor when I (leave)home.
24.I (read) a history book when someone (knock) at the door.
25.Mary and Alice are busy (do)their homework.
26.The teacher asked us (keep) the windows closed.
27.I followed it (see)where it was going.
28.The students (play)basketball on the playground from 3 to 4 yesterday afernoon..
完成下面句子，词数不限
1.飞机在伦敦起飞时正在下雨。
It when the plane in London.
2.你记得汶川大地震时你在做什么吗？
Do you what you when Wenchuan Earthquake .
3.当铃声想起的时候，我们正在操场上玩得很开心。
We on the playground when the bell .
4.当妈妈下班回家时，你在做什么？
Mum from work?
5.当我在做作业时，有人敲门。
，someone the door.
6.当外星人正在买纪念品的时候，那个女孩报了警。
答案
1.while
2.when
3.while
4.when
5.while
6.when
7.When
8.While
9.When 10.When 11.While 12.when 13.when 14.while 15.when 16.when 17.was looking ,saw
18.were playing,began 19.arrived, were talking 20.was sleeping, stole 21.was, sleep,got 22.was cooking,was washing 23.was sweeping,left 24,was reading,knock 25,doing 26.to keep 27. to see 28.were playing
1.was raining,took off
2. remember , were doing ,took place
3.were having fun, rang
4.what were you doing when ,came back home
5.while /when I was doing my homework ,knocked at
6.while the alien was buying the souvenirs,the girl called the police.。