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。
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 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, 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。
时间状语从句(含练习及答案)
以when 引导的时间状语从句- When I got home, my son had finished his homework. (主句动作发生在从句之前)- When(当...时候, 主语+did) we arrived, it was raining.- When(正当...时候，主语+be+doing) I was playing the computer games, my mum came in. - He is always nervous when he speaks to strangers.- I usually walk to school when it rains.以while 引导的时间状语从句- While I was reading, my brother was playing with his toy cars. (主从句子动作同时发生)- While/When/As he was studying in the library, I saw him. (表示一段时间时，while/when/as 可替换)while引导的从句的谓语动词必须是持续性动作:I saw him while(x) I was getting off the bus.(x)I saw him when/as I was getting off the bus.以as 引导的时间状语从句- He will grow wiser as he grows older. 随着年龄的增长，他会聪明起来。
（随着，表示时间的推移，这时，不用when/while）- He entered the room as/when/while the meeting was going on. 正当开会的时候，他走进房间。
以before引导的时间状语从句- He had washed his hands before he had dinner. (主句动作先于从句动作)- Please clean the house before you move in.以after 引导的时间状语从句- She went on holiday after she had taken the examination. (从句动作先于主句)- You can watch TV after you finish your homework.以since 引导的时间状语从句- She has been in the house since she came to the city. (主句完成时态，从句过去时)- I have taught them English since last year.以as soon as引导的时间状语从句- I will write to you as soon as I get to America. 我一到美国就会给你写信。
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。
中考英语when和while的用法和区别
中考英语when和while的用法和区别when和while的区别一：when 当......之时（时间点），后接短暂性瞬间动词when在.....期间（时间段），后接延续性动词while在......期间（时间段），后接延续性动词因此，when可后接短暂性或延续性动词，而while只能接延续性动词。
后接短暂性终止性瞬间动词时，常用when，不用while；后接延续性动词时，when和while 常可替换使用；I was reading when you came in.当你进来的时候，我正在看书。
came是短暂性动词，此处when不能用while代替You came in while I was reading.= You came in when I was reading.read是延续性动词，此处when可用while代替when和while的区别二：1．表示正在做某事的期间，发生了意料之外的另一个短暂的动作，要对比这两件事，常用：主句（过去进行时-持续性动词），when从句（一般过去时-短暂性动词）We were playing games happily when we heard a cry.我们正在高兴地玩游戏的时候，（突然）听见了一声大叫。
2．若主句和从句的动作都比较长，表示同时发生，更常用while，此时可用进行时态或一般时态He waited in the car while l was in the shop.当我在店里的时候，他在车里等着。
He was watching TV while I was writing.当我在写作的时候，他正在看电视。
when和while的区别三：1．when可表示表示某个动作发生结束后紧接发生另一个动作，而while则不可When the bell rang, John went out of the classroom.铃声响后，约翰走出教室。
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。
初中英语when_while练习题
初中英语when_while练习题一.改错1.She is fat but I am thin.2.It was raining while we arrived.3.She sang while he walked.4.I don't know them well，while they are my neighbors.二.选择最佳答案：1.She thought I was praising her child，_____，in fact，I was scolding him for his bad behaviors at school.A.whatB.whileC.so thatD.therefore2.I do every single bit of housework ____ my husband Bob just does the dishes now and then.(2004全国卷II35)A.whileB.sinceC.whenD.as3.______ it is expected that students come university with the ability to take a good set of notes，this is not always the case.A.WhenB.AsC.ForD.While4.We were swimming in the lake ___ suddenly the storm started.A.whenB.whileC.untilD.befor一、用所给动词的适当形式填空1.Betty (watch) TV last night.2.The Shutes usually (have) supper at 6:30 .3.The boys (play football on the playground now.4.Lucy (leave) the classroom half an hour ago.5.It (snow) heavily when they left the station.6.she (fall) off the tree just now?7.It (rain) almost every day last month.8.---where you (catch) the fish?---I (catch) it in the river near the house.9.She (write) a letter to her friend last night. But I don't know whether she has finished it or not.二、句型转换1.I got up late this morning.(改为否定句）I up late this morning.2.She had a bad cold yesterday.(改为一般疑问句）she a bad cold yesterday?3.He left home twenty minutes ago? (对划线部分提问）he home ?4.The boys were playing football at 5:00 yesterday afternoon.(划线提问）the boys at 5:00 yesterday morning?三、根据汉语意思完成句子1.昨天晚上迈克来的时候我正在写作业。
when while练习题
when while练习题When While练习题When和While是两个常用的时间连词，它们在句子中的使用方式有所不同。
当我们理解它们的用法和区别时，就能更好地运用它们来表达自己的意思。
下面是一些练习题，帮助我们更好地掌握和应用这两个连词。
练习一：选择适当的连词填空1. _________ I was cooking dinner, the phone rang.2. _________ I was walking in the park, I saw a beautiful bird.3. _________ I was studying for the exam, my cat jumped on the table.4. _________ I was reading a book, my sister was watching TV.5. _________ I was waiting for the bus, it started to rain.练习二：根据给定的句子，使用When或While填空1. _________ I was walking home, I saw a shooting star.2. _________ I was driving to work, I got stuck in traffic.3. _________ I was shopping at the mall, I bumped into an old friend.4. _________ I was playing soccer, it started to rain heavily.5. _________ I was having dinner, the power went out.练习三：根据给定的情景，选择适当的连词填空1. _________ I was taking a shower, the doorbell rang.2. _________ I was waiting for my friend, he suddenly appeared.3. _________ I was watching a movie, my phone rang.4. _________ I was cooking in the kitchen, the smoke alarm went off.5. _________ I was reading a book, my dog barked loudly.练习四：根据给定的情景，使用When或While填空1. _________ I was sleeping, my alarm clock went off.2. _________ I was walking in the park, I saw a rainbow.3. _________ I was studying for the test, my phone rang.4. _________ I was talking on the phone, my cat knocked over a glass.5. _________ I was driving to work, I saw an accident.练习五：根据给定的情景，选择适当的连词填空1. _________ I was eating lunch, the doorbell rang.2. _________ I was waiting for the bus, it arrived.3. _________ I was watching a movie, the power went out.4. _________ I was playing basketball, it started to rain.5. _________ I was reading a book, my friend called me.答案：练习一：选择适当的连词填空1. While2. While3. When4. While5. When练习二：根据给定的句子，使用When或While填空1. While2. While3. When4. While5. When练习三：根据给定的情景，选择适当的连词填空1. While2. When3. While4. When5. While练习四：根据给定的情景，使用When或While填空1. When2. While3. When4. While5. When练习五：根据给定的情景，选择适当的连词填空1. When2. When3. While4. While5. When通过以上练习题，我们可以更好地理解和运用When和While这两个时间连词。
when和while区别及练习
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Margo was talking on the phone,her sister walked in.we visited the school,the children were playing games.Sarah was at the barber’s,I was going to class.I saw Carlos,he was wearing a green shirt.Allen was cleaning his room,the phone rang.Rita bought her new dog;it was wearing a little coat.7.He was driving along ________ suddenly a woma n appeared.8. _____ Jake was waiting at the door, an o ld woman called to him.9.He was reading a book ______suddenly the tele phone rang.10. ______ it began to rain, they were playi ng chess.11. She saw a taxi coming ______ the woman was waiting under the streetlight.12. The alien was in the museum,I called the police.13.The boy was walking down the street a UFO l anded.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.二、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) thewindows closed.27. I followed it (see) where it was going.28. 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。
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。
中考英语状语从句连接词用法辨析单选题30题答案解析版
中考英语状语从句连接词用法辨析单选题30题答案解析版1.I was doing my homework ______ my mother came back.A.whenB.whileC.sinceD.until答案：A。
“when”表示“当……的时候”，既可以指时间点，也可以指时间段，此句中“妈妈回来”是一个时间点，所以用“when”正确。
“while”通常表示一段时间的动作同时进行，句中“做家庭作业”和“妈妈回来”不是同时进行的一段时间，所以“while”错误。
“since”表示“自从”，引导时间状语从句时，主句通常用现在完成时，此句时态不符，所以“since”错误。
“until”表示“直到……才”，不符合此句语境，所以“until”错误。
2.She was listening to music ______ she was cooking.A.whenB.whileC.sinceD.as soon as答案：B。
“while”表示一段时间内两个动作同时进行，此句中“听音乐”和“做饭”是同时进行的动作，所以用“while”正确。
“when”虽然也可以表示“当……的时候”，但一般指一个动作发生时，另一个动作突然发生，不太符合此句语境，所以“when”错误。
“since”和“as soonas”分别表示“自从”和“一……就……”，不符合此句语境，所以“since”和“as soon as”错误。
3.______ he was reading, the phone rang.A.WhenB.WhileC.SinceD.As soon as答案：A。
“when”表示“当……的时候”，此句中“他正在读书的时候，电话响了”，符合语境，所以“when”正确。
“while”一般指一段时间的动作同时进行，句中“读书”和“电话响”不是同时进行的一段时间，所以“while”错误。
“since”表示“自从”，不符合此句语境，所以“since”错误。
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。
初二英语时间状语从句 when、while 辨析单选题 30 题
初二英语时间状语从句when、while 辨析单选题30 题1.I was reading a book when my mother came in.A.whenB.whileC.asD.since答案解析：A。
本题考查when 和while 的区别。
when 既可以表示某一时刻，也可以表示一段时间，在本句中表示“当……的时候”，符合语境。
while 通常表示一段时间，强调动作的同时性。
as 表示“随着”或“当……的时候”，但与本题语境不太相符。
since 表示“自从”，不符合题意。
2.Mary was singing while her brother was playing the guitar.A.whenB.whileC.asD.since答案解析：B。
while 强调两个动作同时进行，在本句中表示玛丽唱歌和她哥哥弹吉他这两个动作同时发生。
when 虽然也可以表示同时，但更强调一个动作发生时另一个动作突然发生。
as 和since 不符合语境。
3.I saw him when I was walking in the park.A.whenB.whileC.asD.since答案解析：A。
when 表示“当……的时候”，在本句中符合语境。
while 通常用于表示一段时间的动作同时进行，这里“walking in the park”不是持续很长时间的动作。
as 和since 不符合题意。
4.He was cooking while his wife was watching TV.A.whenB.whileC.asD.since答案解析：B。
while 强调两个动作同时进行，在本句中他做饭和他妻子看电视同时发生。
when 更强调一个动作发生时另一个动作突然发生。
as 和since 不符合语境。
5.I was doing my homework when the phone rang.A.whenB.whileC.asD.since答案解析：A。
when和while的区别
1.while后面跟时间段,when后面可 跟时间点或时间段(一般跟时间点). 2.while中主从句动作必同时发 生,when中主从句动作可不同时发 生. 3.while中谓语动词必用延续性动 词,when中可用延续性或瞬间性. 4.while可表示转折,when不行.
用when或者while填空 1._While_ Margo was talking on the phone,her sister wal
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。
ked in. 2.Whenwe visited the school,the children were playing games. 3._When I saw Carlos,he was wearing a green shirt. 4._While Allen was cleaning his room,the phone rang. 5.He was driving along _when_suddenly woman appeared. 8. _While_Jake was waiting at the door, an old woman called to him. 9.He was reading a book _when_suddenly the telepho ne rang. .
when. while 的区别和联系
• • • •
6) when可做特殊疑问词 意思是“何时” while 作名词 意思是“一会儿” When did you get up this morning? I waited for a while, but he didn't show up.
When was walking along the street,my phone • 1.______I rang. when • 2. Mr. Brown was driving along the road____ suddenly a cat appeared. • 3._____ When the earthquake happened, she was at the cinema. • 4. After a while ____, the plane took off. • 5._____ Whenwill they have the meeting? • 6. Her favorite color is red while ___ mine is blue.
2).when 动作可以是同时，也可以先后发生， while则强调主句的动作在从句的发生过程中或主 从句动作同时发生。 1. When he has finished his work, he takes a short rest.(when=after) 2. When I got to the cinema, the film had aleady begun.(when=before) 3. While Jim was mending（修理） his bike, LinTao came to see him. 4. You can't do your homework while you're watching TV.
when和while区别及专项练习 - 含答案
when和while区别及专项练习 - 含答案When和While用法区别专项练讲解三例句：1.The girls are dancing while the boys are singing.2.Kangkang’s mother is cooking when he gets home.Kangkang’s mother is cooking。
he gets home.一、用when或者while填空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 called to him.9.He was reading a book when suddenly the telephone rang.10.When it began to rain。
they were playing chess.二、用所给动词适当形式填空11.While Jake was looking for customers。
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。
It when the plane in London.
2.你记得汶川大地震时你在做什么吗？
Do you remember 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？
when Mum from work?
5.当我在做作业时，有人敲门。
I was doing my homework, someone the door.
6.当外星人正在买纪念品的时候，那个女孩报了警。
the alien was buying the souvenirs, the girl the police.
答案：
1.while
2.when
3.while
4.when
5.while
6.when
7.When
8.While
9.When 10.When
11.was looking ,saw 12.were playing,began 13.arrived, were talking 14.was sleeping, stole15..was,sleeping got 16.was cooking, was washing 17.was sweeping,left 18,was reading,knocked
19,doing 20.to keep 21. to see 22.were playing
1. was raining, took off
2. were doing ,took place
3. were having fun, rang
4. what were you doing ,came back home
5. while /when, knocked at
6. while, called。