when和while区别及练习

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 call ed 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 4yesterday 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。

While/ when 专项训练When和While的区别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.一、用when或者while填空1.______ Maria was talking on the phone, her sister walked in.2.______ we visited the school, the children were playing games.3.______ Sally was at the doctor’s, I was going to class.4.______ I saw Kangkang, he was wearing a green shirt.5.______ Allen was cleaning his room, the phone rang.6.______ Rita found her pet 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 tree.12. The elephant was in the museum, _______I called the police.13. The boy was walking down the street________ a UFO landed（着陆）.14. I was cleaning my room__________ the fire broke out.15. Linda shouted his name,________ some people looked at her.二、用所给动词适当形式填空16. While Jack __________ (look) for customers（顾客）, he _______ (see) a woman.17. They __________ (play) football on the playground when it _____ (begin) to rain.18. A strange box ________ (arrive) while we _________ (talk).29. John ____________ (sleep) when someone __________ (clean) his car.20. Father (sleep) when I (get) up yesterday morning.21. Grandma (cook) breakfast while I (wash) my face this morning.22. Mother (clean) the floor when I (leave) home.23. I (read) a history book when someone (knock) at the door.24. Mary and Alice are busy (do) their homework.25. The teacher asked us (keep) the windows closed.。

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的区别一）、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。

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。

例如：Peter came in while /as I was watching TV.当Peter进来的时候我正在看电视。

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.XXX.2.XXX home.3.XXX。

XXX 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 thebarber’s。

Iwas going to class.4.______ I saw Carlos。

he was XXX.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 ________ XXX.8._____ Jake was waiting at the door。

an old woman called to him.9.He was reading a book ______XXX.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) XXX it _____ (begin) to rain.13.A strange box ________ (arrive) while we _________ (talk).14.XXX ____________ (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) XXX.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 4XXX.三、完成下面句子，词数不限1.飞机在伦敦起飞时正在下雨。

While与when的区别when和while引导的时间状语从句与这一时态连用。

所以区别when和while的用法成了这一单元的难点。

（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 when 和while的用法区别两者的区别如下：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与WHILE用法区别when, while这三个词都有"当……时候"之意，但用法有所不同，使用时要特别注意。

①when意为"在……时刻或时期"，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。

如：When I got home, he was having supper.我到家时，他正在吃饭。

When I was young, I liked dancing.我年轻时喜欢跳舞。

②while只指"时间段"，不指"时间点"，从句的动词只限于持续性动词。

如：While I slept, a thief broke in.在我睡觉时,盗贼闯了进来。

辨析①when从句与主句动作先后发生时，不能与while互换。

如：When he has finished his work, he takes a short rest.每当他做完工作后，总要稍稍休息一下。

(when = after)(When I got to the cinema, the film had already begun.当我到电影院时，电影已经开始了。

(when=before)②when从句动词为终止性动词时，不能由while替换。

如：When he came yesterday, we were playing basketball.昨天他来时，我们正在打篮球。

③当从句的谓语是表动作的延续性动词时，when, while才有可能互相替代。

如：While / When we were still laughing, the teacher came in.正当我们仍在大声嬉笑时，老师进来了。

④当从句的谓语动词是终止性动词，而且主句的谓语动词也是终止性动词时,when可和as通用，而且用as比用when在时间上更为紧凑，有"正当这时"的含义。

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 woman appeared.8. _____ Jake was waiting at the door, an old woman calledto 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 4yesterday 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。

(do) their homework. the windows closed.it was going.____________________ (play)讲解三例句：1. The girls are dancingwhile the boys are singing.2. Kangkang 'mother is cookingwhen he gets home.3. When/While Kangkang '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. ____ wevisited the school, the childrenwere playing games.3. ____ Sarah was at the barber ',1 was going to class.4. ____ I saw Carlos, he was wearing a green shirt.5. ____ Allen wascleaning his room, the phone rang.6. ____ Rita bought her newdog; it was wearing a little coat.7. He was driving along _________ s uddenly awomanappeared.8. ____ Jake was waiting at the door, an old womancalled to him.9. He was readi ng a book _____ sudde nly the teleph one rang. 10. ______ i t began to rain, they were playing chess.11. She saw a taxi coming _____ the womanwaswaiting under the streetlight 12. The alien was in the museum, I called the police. 13. The boy was walking downthe street a UFOlanded.14. The alien was visiting the museum, the boy called the TVstation. 15.1 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 whenit _______________ (begin) to rain.19. A strange box _________ (arrive) while we ____________ (talk).20. John _____________ (sleep) whensomeone ______________ (steal) his car. 21.Father still ______________ (sleep) whenl _____________________ (get)up yesterday morning.22.Grandma _________ (cook) breakfast while I _____ (wash) myface this mornin g.22. Mother _____ (sweep) the floor when I______ (leave) home.24.I ____ (read) a history book whensomeone(knock) ___________________________ a t the doo r.23. Mary and Alice are busy24. The teacher asked us _________ (keep)_25. I followed it ________ (see)_where 26.The students _____________________basketball on the playground from 3 to 4 yesterday after noon. 三、完成下面句子，词数不限 1. 飞机在伦敦起飞时正在下雨。

（一）when和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）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,我正在做家庭作业。

When和While的区别
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 和while的用法区别when和while是英语中两个常见的连词，它们在句子中的使用有一些区别。

下面就来详细介绍一下它们的用法区别。

一、时间状语从句中的用法：1. when：表示“当……的时候”，引导的时间状语从句中的动作与主句的动作同时或几乎同时发生。

例句：I always feel sleepy when I listen to classical music.（当我听古典音乐的时候，我总是感到困倦。

）2. while：表示“在……的时候”，引导的时间状语从句中的动作与主句的动作同时发生，但强调主句的动作持续时间较长。

例句：She watched a movie while her brother was studying. （她在她哥哥学习的时候看电影。

）二、连词的不同含义：1. when：除了表示时间状语从句外，还可以表示“当……的时候”、“每当”等含义。

例句：When it rains, I always stay at home.（每当下雨，我总是待在家里。

）2. while：除了表示时间状语从句外，还可以表示对比、让步、转折等含义。

例句：While I appreciate your effort, I still think you need to improve.（虽然我赞赏你的努力，但我仍然认为你需要进步。

）三、连词引导的句子结构：1. when：可以引导的从句有主语+谓语或名词性从句。

例句：When she arrived, everyone applauded.（当她到达时，大家鼓掌。

）例句：I don't know when he will come back.（我不知道他何时会回来。

）2. while：除了可以引导主语+谓语的从句外，还可以引导状语从句和让步从句。

例句：While I was reading, the phone rang.（我在看书的时候，电话响了。

when和while的区别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。

．．．．．．．．while③由when引导的时间状语从句，主句用．．．．．；如．．．．．一般过去时．．．．．，从句应用．．．过去进行时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。

[拓展：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。

① Why do you want a new job when you’ve 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。

whenwhile区别顺口溜摘要：1.了解while和when的用法区别2.while和when的句子结构分析3.实际例子解析4.总结：何时使用while，何时使用when正文：在学习编程或者英语语法中，while和when这两个词的用法区别常常让我们感到困惑。

别担心，这里有一首顺口溜帮助你牢记它们之间的差别。

While和when，用法有区分，前者引导循环，后者指时间。

一、了解while和when的用法区别首先，我们要明确while和when的基本含义。

While（当……时候）一般用于引导循环语句，表示在某个条件满足的情况下，重复执行一段代码。

而when（当……时候）则表示某个特定时刻，通常用于描述某个事件发生的时间。

二、while和when的句子结构分析1.当while引导循环语句时，其基本结构如下：```while (条件) {// 循环体}```例如：```int i = 0;while (i < 10) {i++;cout << i << endl;}```2.当when引导时间状语从句时，其基本结构如下：```主句+ when（或while）+ 从句```例如：```I will go to the park when（while）it stops raining. ```三、实际例子解析1.使用while的情况：```int j = 0;while (j <= 5) {cout << "j = " << j << endl;j++;}```在这个例子中，while循环会不断执行，直到j的值大于5。

2.使用when的情况：```void showTime() {cout << "现在是：" << currentTime << endl;}void main() {showTime();showTime();showTime();}int main() {Sleep(1000); // 等待1秒showTime();Sleep(1000); // 等待1秒后，执行以下代码cout << "1秒后：" << currentTime << endl; return 0;}```在这个例子中，我们使用when指定了显示当前时间的函数在程序运行的不同时间点被调用。

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。

while和when的区别以及实例句型你知道while和when的区别么。

你知道while和when的区别中有多少不为人知的秘密么。

下面由店铺为你分享while和when的区别的相关内容，希望对大家有所帮助。

when和while的有哪些区别when和while的区别11. when引导的时间状语从句中的谓语动词既可以是终止性动词，也可以是延续性动词，而while引导的时间从句中的谓语动词必须是延续性动词。

如：He fell asleep when/ while he was reading. (read是延续性动词)他看书时睡着了。

It was raining hard when we arrived. (arrive是终止性动词)我们到达时正下着大雨。

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 looked after the baby while her mother was out.她妈妈外出时我照顾她。

Strike while the iron is hot.(is是延续性动词，表示一种持续的状态)趁热打铁。

2. 在“be about to do…when…”(正要做…，就在这时/突然…) 这个句型中，只能用when。

如：One day, I was about to do some shopping when hetelephoned me.一天,我正要去买东西,他打电话找我。

3. 在“be on the point of doing…when…” (正要做…，就在这时/突然…) 这个句型中，只能用when。

如：He was on the point of leaving when someone knocked at the door.他刚要走就有人敲门。

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。