when和while区别及专项练习-含答案
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。
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：用when引导的状语从句表示时间，说明一个动作发生的时候，另一个动作正在进行。
如：—What were you doing when I came into the classroom? 当我走进教室的时候你正在干什么？—I was reading. 我正在读书。
—What was he doing when I came in? 当我进来的时候他正在干什么？— He was watching TV.他正在看电视。
When I got there, she was playing the violin. 我到那里时，她正在拉小提琴。
用when引导的时间状语从句也可以表示某一个动作已发生，另一个动作已经完成，已经完成的主句的动作用过去完成时态来体现。
When they arrived at the station, the train had left.当他们到达车站的时候，火车已经离开了。
用while连接的时间状语从句一般用过去进行时，表示正在进行某一个动作时发生了另一个动作，而主句常用一般过去时。
While I was playing the violin, he came to see me.我正在拉小提琴时，他来看我了。
While he was reading, the telephone rang. 当他正在读书的时候，电话铃响了。
While we were boating on the lake, we saw a fish jump out of the water.当我们正在湖中划船时，我们看见了一条鱼跳出了水面。
注意：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）。
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。
when和while的用法和区别
when和while的用法和区别When 和 While 的用法和区别在英语学习中，when 和 while 这两个词常常让学习者感到困惑。
它们都可以用来引导时间状语从句，但在具体的用法和所表达的含义上却存在着一些差异。
下面我们就来详细探讨一下 when 和 while 的用法和区别。
一、When 的用法1、表示“当时候”，引导的动作可以是短暂性的，也可以是持续性的。
例如：When I got home, my mother was cooking （我到家时，妈妈正在做饭。
）在这个句子中，“got home”是短暂性动作。
2、还可以表示“就在这时，突然”。
例如：I was walking along the street when suddenly someone called me （我正在街上走着，突然有人叫我。
）3、 When 可以用来询问具体的时间。
例如：When did you come back? （你什么时候回来的？）二、While 的用法1、表示“在期间，当时候”，引导的动作通常是持续性的。
比如：While I was reading, he was playing games （我在读书的时候，他在玩游戏。
）这里“was reading”和“was playing games”都是持续性动作。
2、强调主句动作和从句动作同时发生。
例如：While he was doing his homework, I was watching TV （他在做作业的时候，我在看电视。
）三、When 和 While 的区别1、动作的性质When 引导的从句动作既可以是短暂性的，也可以是持续性的；而while 引导的从句动作通常是持续性的。
例如：When the doorbell rang, I was having a bath （门铃响时，我正在洗澡。
）（“rang”是短暂性动作）While I was sleeping, the phone rang （我睡觉的时候，电话响了。
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。
2023暑假作业 第08练 when while as等引导的时间状语从句(解析版)
第08练when、while、as等引导的时间状语从句一、When/while/as（当…时候）1）When:when引导时间状语从句时表示“当……的时候”，when既可以指时间段也可指时间点，从句中既可用延续性动词又可用瞬间性动词，且动作既可和主句的动作同时发生又可在主句的动作之前或之后发生。
且when引导的时间状语从句中一般用一般现在时表将来（主将从现）。
e.g. When I came home my wife was cooking dinner.A）如果when引导的时间状语从句的主语与主句主语相同，而从句的谓语又是be动词时，那么从句中的主语和be可以省略;e.g. When (you are) in trouble, ask her for help.B）当when引导的时间状语从句的主语与主句主语相同时，往往还可以省略从句的主语并用“when+分词”的形式替代该状语从句。
e.g. When I came into the room (=When coming into the room), I found him lying there asleep.2）Whilewhile引导时间状语从句时表示“当……的时候”，它强调主句的动作与从句的动作同时持续地进行，用于这一用法时while引导的时间状语从句和主句中的谓语动词必须是延续性动词，或者强调主句的动作发生在从句动作的进行过程中，此时主句中的谓语动词通常是非延续性动词。
记住，从句中始终是延续性动词，且从句多用进行时态。
（while还可以表示对比，译成“然而”，放在句首可以表示“虽然”）e.g. I met her while I was at school.3）Asas引导时间状语从句时表示①“当……时”（只引导瞬间性动词，两个动作是紧密联系的，一前一后进行），②“一边……一边……”，侧重表示两个动作同时发生(包括一个主语同时进行两个动作)，③“随着”，一种动作随着另一种动作的变化而变化从句中只能接延续动词。
when和while区别及练习
when和while区别及练习The girls are dancing while the boys are singing。
Kangkang’s mother is cooking when he gets home。
When Kangkang’s mother is cooking。
he gets home。
1.While Margo was talking on the phone。
her sister walked in。
2.When we visited the school。
the children were playing games。
3.While Sarah was at the barber’s。
I was going to class。
4.When I saw Carlos。
he was wearing a green shirt。
5.While Allen was cleaning his room。
the phone rang。
6.When Rita bought her new dog。
it was wearing a little coat。
7.He was driving along when suddenly a woman appeared。
8.While Jake was waiting at the door。
an old woman calledto him。
9.He was reading a book when suddenly the telephone rang。
10.When it began to rain。
they were playing chess。
11.While the woman was waiting under the streetlight。
she saw a taxi coming。
12.When I was in the museum。
whenwhile的练习题
whenwhile的练习题when和while都是表示时间的连词，在句子中起到连接上下文、表达时间关系的作用。
在使用上，when常用于表示“当…的时候”，while 则常用于表示“在…期间”。
下面，我将为您提供一些when和while的练习题供您练习。
练习题一：用when或while填空1. ________ I was walking home, it started to rain heavily.2. ________ I was cooking dinner, the phone rang.3. He fell asleep ________ watching TV.4. ________ I was studying for the exam, my friends were having fun at the party.5. ________ I was reading a book, my sister was playing the guitar.练习题二：改写句子，使用when或while1. I saw her. She was crossing the street.改写：I saw her ________ she was crossing the street.2. They were watching a movie. The power went out.改写：________ they were watching a movie, the power went out.3. He was reading a novel. The doorbell rang.改写：He was reading a novel ________ the doorbell rang.4. She was doing her homework. The dog barked loudly.改写：________ she was doing her homework, the dog barked loudly.5. We were having dinner. The fire alarm went off.改写：________ we were having dinner, the fire alarm went off.练习题三：根据上下文，选择合适的连词（when或while）填入句子1. ________ Alice was shopping at the mall, she bumped into her old friend.2. ________ my parents were away on vacation, I took care of our house.3. ________ the teacher was explaining the lesson, some students were chatting.4. ________ I was waiting for the bus, I noticed a familiar face in the crowd.5. ________ my brother was playing video games, I was studying in the next room.答案：练习题一：用when或while填空1. While2. While3. While4. While5. While练习题二：改写句子，使用when或while1. when2. While3. when4. While5. While练习题三：根据上下文，选择合适的连词（when或while）填入句子1. When2. While3. While4. While5. While以上是关于when和while的练习题，希望对您有帮助。
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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We
on 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 Mum
from 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.while
2.when
3.while
4.when
5.while
6.when
7.When
8.While
9.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. Grandma
3. were having fun, rang
17. Mother (sweep) the floor when I (leave) home.
4. what were you doing ,came back home 18. I (knock) at the door. (read) a
history book when someone
5. while /when, knocked at 19. Mary and Alice are busy (do) their homework.
6. while, called
20. 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 students
yesterday afternoon.。