when和while区别练习(可编辑修改word版)
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。
第七whenwhileas区别及练习
When while as 区别一、根据从句动作的持续性来区分1、“主短从长”型：即主句是一个短暂性动作，而从句是一个持续性动作，此时三者都可用。
如：Jim hurt his arm while [ when ，as] he was playing tennis. 吉姆打网球时把手臂扭伤了。
2、“主长从长” 型：即主句和从句为两个同时进行的动作或存在的状态，且强调主句动作或状态延续到从句所指的整个时间，此时通常要用while 。
I always listen to the radio while I ' m driving. 我总是一边开车一边听收音机。
He didn ' t ask me in; he kept me standing at the door while he read the message. 他没有让我进去，他只顾看那张条子，让我站在门口等着。
但是，若主句和从句所表示的两个同时进行的动作含有“一边……一边”之意时，则习惯上要用as。
如：He swung his arms as he walked. 他走路时摆动着手臂。
3、“主长从短”型：即主句是一个持续性动作，而从句是一个短暂性动作，此时可以用as或when,但不能用while。
如：It was raining hard when [as] we arrived. 我们到达时正下着大雨。
二、根据主句与从句动作是否同时发生来区分1若主句与从句表示的是两个同时发生的短暂性动作，含有类似汉语“一……就”的意思，英语一般要用as （也可用when）。
如：The ice cracked as [when] I stepped onto it. 我一踩冰就裂了。
2、若主句与从句表示的是两个几乎同时发生的短暂性动作，含有类似汉语“刚要……就”“正要……却”的意思，英语一般要用as（也可用when），且此时通常连用副词just。
when和while的用法和区别
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。
when, while 和as 的区别及练习
when, while和as的区别及练习使用when的情况:1.两个短暂性动作同时发生或接连发生时：I took off my shoes when I got home. 我一回到家，就把鞋子给脱掉了。
I picked up the phone when it rang. 当电话响的时候，我就接起了电话。
2.经常与年龄连用When I was 28 years old, I was working in New York.3.可以与延续性和短暂性动词连用Lily was sleeping when he called. 他电话来的时候，Lily正在睡觉。
He called when Lily was sleeping. Lily正在睡觉的时候，他打电话进来。
使用while的情况：1.当主句和从句都为进行时，指两个动作动作同时I was watching TV while my father was sleeping.我在看电视，我的爸爸在睡觉。
2.While 后面可以跟延续性动词，不能能短暂性动词。
He called while Lily was sleeping. Lily正在睡觉的时候，他打电话进来。
3.while 还可以表示然而，但是He is clever while he is very lazy. 他很聪明，但是很懒。
使用as的情况:1.As后面跟延续性动词He went back as his mother was cooking. 当他妈妈正在煮饭的时候，他回来了。
2.As 可以引导让步状语从句，但要倒装Child as he is, he is popular with a lot of people. 尽管他是小孩，但是他受很多人的欢迎与喜爱。
Try as he might, he still couldn’t make progress. 尽管他也尝试了，但是他仍然没有获得进步。
when while 练习题
when while 练习题当我们学习英语时，经常会遇到关于when和while的用法。
这两个词都是表示时间的连词，但在不同的语境下有不同的用法。
为了帮助大家更好地理解和掌握这两个词的用法，下面为大家整理了一些练习题。
希望能对大家的学习有所帮助。
练习一：选择填空1. ________ the movie, I fell asleep.A. WhenB. While2. ________ I was sleeping, someone broke into my house.A. WhenB. While3. He always listens to music ________ he is doing homework.A. whenB. while4. ________ waiting for the bus, I met an old friend.A. WhenB. While5. I like to go for a walk ________ it is sunny.A. whenB. while练习二：句子改错1. When I will go to New York, I will visit the Statue of Liberty.2. While my friend was studying, I was watching TV.3. She always listens to music when she is cooking.4. I met my teacher when I was walking to school.5. While I can speak English fluently, my brother is still learning.练习三：完成句子1. ________ I was doing my homework, my mom called me.2. ________ I go to the gym, I like to listen to music.3. He always eats ice cream ________ it is hot outside.4. Please be quiet ________ I am talking on the phone.5. We arrived at the beach ________ the sun was setting.练习四：翻译句子1. 当我正在洗澡的时候，电话响了。
时间状语从句讲解和练习(答案)(可编辑修改word版)
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。
(完整版)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。
(完整版)when,while,as讲解与练习.docx
时间状语从句讲解与练习when, while和as 引状从句的用法三个的意思很，都有“当⋯⋯候”的意思, 但又有区。
一、 when 的用法察下面的句子:1.When he was a child he was always trying out new ideas. 他小候就常常一些新的想。
2.When she came into my room, I was just reading a book. 她走我房，我正在看。
3.Were you writing when the teacher came in? 老来的候，你在写信？4.Sorry, I was out when you called me. 不起，你打来的候我出去了。
5.He was leaving when someone knocked at the door. 他正要走，有人敲。
6. I thought of it just when you opened your mouth.就在你要的候，我也想到了。
根据以上的例句，我可以出一点：when 从句中的 A 事件，相当于主句中 B 事件生的点。
也就是，when从句的重点不在作本身生的状，而只是把它作一个点，所以when从句多数情况下用的是一般去，而不用行, 而且, when从句的大多是短性。
种法也可以参照。
上， when 从句也可以有其它的，但几乎也不用行，因它也只是作一个参照点。
例如：When the manager comes here for a visit next week, I’ll talk with him about this.下周，理来参，我会和他此事。
When 的特殊用法：主句（行）when 从句（一般）I was walking along the street when a ball hit me on the head.我正沿着路着，就在一个球打在了上。
when和while区别及专项练习-含答案
用法区别专项练习和whilewhen三、完成下面句子，词数不限1.飞机在伦敦起飞时正在下雨。
讲解三例句：It when the plane 1. The girls are dancing while the boys are singing.in London.2.2. Kangkang'你记得汶川大地震时你在做什么吗？s mother is cooking when he gets home.Do you remember what you 3. When/While Kangkang's mother is cooking, he gets home. when Wenchuan Earthquake .3. 当铃声想起的时候，我们正在操场上玩得很开心。
一、用when或者while填空Weon the playground when the bell . 1.______ Margo was talking on the phone, her sister walked in.4.2.______ we visited the school, the children were playing games. 当妈妈下班回家时，你在做什么？3.______ Sarah was at the barber's, I was going to class. when Mumfrom work?5.4.______ I saw Carlos, he was wearing a green shirt. 当我在做作业时，有人敲门。
I was doing my homework, someone the door. 5.______ Allen was cleaning his room, the phone rang.6.当外星人正在买纪念品的时候，那个女孩报了警。
6.______ Rita bought her new dog; it was wearing a little coat.7. He was driving along ________ suddenly a woman appeared. the alien was buying the souvenirs, the girl the police.8. _____ Jake was waiting at the door, an old woman called to him.9. He was reading a book ______suddenly the telephone rang.答案：10. ______ it began to rain, they were playing chess.1.while2.when3.while4.when5.while6.when7.When8.While9.When 10.When 二、用所给动词适当形式填空11.was looking ,saw 12.were playing,began 13.arrived, were talking 14.was sleeping, 11. While Jake __________ (look) for customers, he _______ (see) a woman.stole15..was,sleeping 12. They __________ (play) football on the playground when it _____ (begin) to rain. got 16.was cooking,was washing 17.was sweeping,left 18,was reading,knocked 13. A strange box ________ (arrive) while we _________ (talk).19,doing 20.to keep 21. to see 22.were playing 14. John ____________ (sleep) when someone__________ (steal) his car.1. was raining, took off (sleep) when I 15. Father still (get) up yesterday morning.2. were doing ,took place (cook) breakfast while I (wash) my face this morning. 16. Grandma3. were having fun, rang17. Mother (sweep) the floor when I (leave) home.4. what were you doing ,came back home 18. I (knock) at the door. (read) ahistory book when someone5. while /when, knocked at 19. Mary and Alice are busy (do) their homework.6. while, called20. The teacher asked us (keep) the windows closed.21. I followed it (see) where it was going.(play) basketball on the playground from 3 to 4 22. The studentsyesterday afternoon.。
(完整word版)when和while区别练习
(完整word版)when和while区别练习when、while 指引时间状语从句时的差别练习题用 when 或许 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._____ Jake was waiting at the door, an old woman called to him.7.______ it began to rain, they were playing chess.8.She saw a taxi coming ______ the woman was waiting under the streetlight.9.The boy was walking down the street a UFO landed.10. _______ the alien was visiting the museum,the boy called the TV station.用所给动词适合形式填空1.While Jake ___________________(look) for customers, he ____________(see) a woman.2.They __________________(play) football on the playground when it ________(begin) to rain.3.A strange box _______________(arrive) while we _________________________ (talk).4.John _____________________________(sleep) when someone ____________(steal) his car.5.Father __________still_____________ (sleep)when I _________(get)up yesterday morning.6.Grandma ______________(cook) breakfast while I_____________(wash) my face this morning.7.Mother______________________(sweep)the floor when I_____________ (leave)home.8.I _________________(read) a history book when someone_____________ (knock) at the door.9.Mary and Alice are busy_____________(do)their homework.10.The students ____________(play)basketball on the playground from 3 to 4 yesterday afernoon.达成下边句子，一空一词1.飞机在伦敦腾飞时正在下雨。
第七 when while as 区别及练习
When while as区别一、根据从句动作的持续性来区分1、“主短从长”型：即主句是一个短暂性动作，而从句是一个持续性动作，此时三者都可用。
如：Jim hurt his arm while［when， as］ he was playing tennis. 吉姆打网球时把手臂扭伤了。
2、“主长从长”型：即主句和从句为两个同时进行的动作或存在的状态，且强调主句动作或状态延续到从句所指的整个时间，此时通常要用while。
I always listen to the radio while I’m driving. 我总是一边开车一边听收音机。
He didn’t ask me in; he kept me standing at the door while he read the message. 他没有让我进去，他只顾看那张条子，让我站在门口等着。
但是，若主句和从句所表示的两个同时进行的动作含有“一边……一边”之意时，则习惯上要用as。
如：He swung his arms as he walked. 他走路时摆动着手臂。
3、“主长从短”型：即主句是一个持续性动作，而从句是一个短暂性动作，此时可以用as 或when，但不能用while。
如：It was raining hard when [as] we arrived. 我们到达时正下着大雨。
二、根据主句与从句动作是否同时发生来区分1、若主句与从句表示的是两个同时发生的短暂性动作，含有类似汉语“一……就”的意思，英语一般要用as (也可用when)。
如：The ice cracked as [when] I stepped onto it. 我一踩冰就裂了。
2、若主句与从句表示的是两个几乎同时发生的短暂性动作，含有类似汉语“刚要……就”“正要……却”的意思，英语一般要用as(也可用when)，且此时通常连用副词just。
如：I caught him just when [as] he was leaving the building. 他正要离开大楼的时候，我把他截住了。
whenwhile_as,since_的区别用法及练习题.docx
when,while,as,since的用法大总结以及练习题一.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：亠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,lei's try anoter.既然这种方法不行，我们就试用另一种吧。
四.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。
when与while的区别
when与while的区别1. when指某个时间点，表示瞬间动作；while 指某个时间段，表示延续性动作。
如：When I got there, she was playing the violin. 我到那里时，她正在拉小提琴。
While I was playing the violin, he came to see me.我正在拉小提琴时，他来看我了。
补给站：英语中，延续性动作是由延续性动词发出的，瞬间性动作是由非延续性动词发出的。
延续性动词和非延续性动词的区别：延续性动词是指该动作可以延续一段时间，而不是瞬间结束，如work（工作）、study（学习）、eat（吃）、watch（观看）；非延续性动词是指该动作极为短暂，瞬间便会结束，如start（开始）、begin（开始）、hit（撞）、see（看见）、knock（敲）、jump （跳）。
2. when表示偏偏在这时，强调双方动作互相冲突；while表示与此同时，双方动作互不相干。
如：When we were having a meeting, the children were shouting outside the window.我们正在开会，孩子们却在窗外大喊大叫。
While we were having a meeting, the children were watching TV in the next room. 我们开会时，孩子们在隔壁房间看电视。
3. when排斥一般时间概念，泛指某特定情况；while表示趁有条件时，强调抓紧时机。
如：When in Rome, do as the Romans do.入乡随俗。
While in Rome, he visited some of his old friends. 他在罗马的时候，拜访了一些朋友。
4. 用于完成时，when表示“在……之后”，while表示“在……期间”。
when和while的区别
when与while的用法与区别〔一〕、when，while都有"当……时候〞的意思。
when既可表示*一点时间，也可以表示*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"教师进来的时候，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*一段时间，不能表示*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。
例如：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展时态，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，我正在做家庭作注意：1)如主句谓语动词表示的是短暂动作，从句时间状语指一段时间，when while as 三者可通用。
(完整word版)辨析when与while
when&while用法辨析总结：1. when 的用法比while要广，一般都可用when。
2. 有两种情况通常用while：1）如果从句和主句的动作同时发生，两句都是过去进行时，通常用while。
They were singing while we were dancing.2）前后两句表示对比，这时while表示“而”、“却”。
He is strong while his brother is weak.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.翻译句子：1. 她进来时我在看电视。
2. 当我在看电视的时候，他正在看书。
3. 我们到达时正下着大雨。
4. Mary在回家的路上，这时两个男孩拦住了她。
5. Lily个子高，Lucy个子矮。
Keys:用when, while填空：1. I was listening to the radio when he came in.2. When the teacher came in, we were talking.3. When he came back, I was doing some washing.4. I was cooking dinner when they came home.5. He fell asleep when / while he was reading.6. He asked me a question while /when I was speaking.7. Jim hurt his arm while /when he was playing tennis.8. When / While she was waiting for the train, she became very impatient.9. He was watching TV while she was cooking.翻译句子：1. She entered the room while /when I was watching TV.2. While I was watching TV, he was reading.3. It was raining hard when we arrived.4. Marry was on her way home when two boys stopped her.5. Lily is tall while Lucy is short.。
小升初英语语法专题精讲学案 when和while用法区别(含答案)
语法专题：when和while用法区别1. When I got there, she was playing the violin.2. While I was playing the violin, he came to see me.用法区别一，时间上：⏹while 是“一段时间〞，其后多接持续性动词，如：While walking the dog，I was careless，it got loose and ran away.〔walk为持续性动作——遛〕⏹When 是“一点时间〞，其后多接短暂性动词，如：When I arrived there，he was crying. 〔arrive为瞬时性动作——到达〕二，词义上⏹while 还可表〔相当于一边……一边的〕“和……同时〞，〔含有对照之意的〕“而……〞，如：I sang a song while I was running. 我边跑边唱歌。
He stood while his brother sat. 他站着，而他弟弟坐着。
⏹when 还可表“这时突然〞，其前面，多有逗号，如：I was reading，when he came in.练一练一、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 sleeping, 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 a 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、用所给单词的适当形式填空。
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when、while 引导时间状语从句时的区别练习题
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.Jake was waiting at the door, an old woman called to him.
7.it began to rain, they were playing chess.
8.She saw a taxi coming the woman was waiting under the streetlight.
9.The boy was walking down the street a UFO landed.
10.the alien was visiting the museum,the boy called the TV station.
用所给动词适当形式填空
1.W hile Jake (look) for customers, he (see) a woman.
2.They (play) football on the playground when it (begin) to rain.
3.A strange box (arrive) while we (talk).
4. John (sleep) when someone (steal) his car.
5.Father still (sleep)when I (get)up yesterday morning.
6.Grandma (cook) breakfast while I (wash) my face this morning.
7.Mother (sweep)the floor when I (leave)home.
8.I (read) a history book when someone (knock) at the door.
9.Mary and Alice are busy (do)their homework.
10.The students (play)basketball on the playground from 3 to 4 yesterday afernoon. 完成下面句子，一空一词
1.飞机在伦敦起飞时正在下雨。
in London.
It when the plane
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.。