最新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, 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。
while与when区别练习
while与when区别练习when与while的区别一、选词填空1.What’s wrong?You look so (tire,tired,tiring).2.This coat is (nice,nicely)and seems very (expensive,expensively).3.It’s (bored,boring)to do the same thing every day.4.This car isn’t (safe,safely)to drive.5.Mum got (angry,angrily)because Tom came home very late.6.His idea sounds (good,well).二、根据汉语意思完成句子，没空一词。
1.这道菜尝起来很美味。
The dish .2.这辆小汽车很贵。
The car .3.这个漂亮的女孩会弹钢琴。
Can play the piano.4.这首歌很难唱好。
Thie song is very .5.在大街上踢足球很危险。
It is very football in the street.6.她有着圆圆的脸和又大又黑的眼睛。
She has a and .7.天黑以后单独出门是危险的。
It’s out alone afer dark.8.我们发现在这个村庄几乎不可能买到汽油。
We found it almost petrol in this village.9.这蛋糕很容易做。
This cake is .10.莉莉今天看起来很开心。
Lily today.三、选择题1.I have to do today.A.anything importantB.something importantC.important nothingD. important something2.Tony is going camping with boys.A.little two otherB.two little otherC.two other littleD.little other two3.-Tom looks .What’s wrong with him?-He lost his job yesterday.A.sadB.sadlyC.happyD.happily4.Julia is not so as Linda.Linda is the tallest girl in our class.A.tallerB.tallC.shorterD.short5.Mike is enough to move the heavy stone out of the road.A.strongB.strongerC.much strongerD.strongest6.The English passage is to understand because there arenew words.A.difficult;muchB.difficulty;fewC.difficult;manyD.difficulty;little7.The twins are together most of the time,so they never feel .A.friendlyB.tiredC.safeD.lonely一、把下面的直接引语改为间接引语1.“I never eat meat.”he explained.2.Tom asked,“When will the Teenagers’ Film Week start?”3.He said to me,“I have left my book in your room.”4.She added, “Have you got the ticket for Wall-E?”5.He asked, “Are you sure your mother will come?”6. “Will you be here tomorrow?”he asked me.7.He said, “I’m reviewing my lesson.”8.Jack said to her, “Where did you spend your holiday?”9.He said to me, “Don’t do that again.”10. “Light travels much faster than sound.”Everybody in our class knew.二、选择题1.He said, “I am living with my brother.”→He said that _______ was living with his brother.A.IB.youC.heD.they2. He said, “You are sure to get a warm welcome here.”→He said that we_______ sure to get a warm welcome there.A.amB.wasC.wereD.are3.The teacher asked, “Has she read enough this week?”→The teacher asked _______read enough ________ week.A.if she had,thatB.whether she has,thisC.if had she,thatD.whether has she,this4.He said, “Do I have anything to do with her.”→He asked _______ anything to do with ________ .。
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。
英语人教版八年级下册while 和 when 的用法区别
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。
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、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.before。
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。
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。
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。
初中状语从句总结及练习(附答案)
状语从句练习易混引导词while, when, as的区别：1.when既可以指"时间点",与瞬间动词连用，也可以指"时间段"，与延续性动词连用（=while）。
如：When he came in, his mother was cooking.When (While) we were at school, we went to the library every day.While表示时间段,因此，while 从句的谓语动词要用延续性动词。
如：Please don't talk so loud while others are working.As与when用法相似，但着重强调主句动作与从句动作同时发生，有"随着……"或"一边……一边……"之意。
如：As you get older, you get more knowledge.随着年龄的增长，你获得的知识就越多。
2．Because,as,since 的区别：Because用于表示直接原因,回答why提出的问题，语气最强；As用于说明原因, 着重点在主句，常译成"由于"；since表示显然的或已知的理由或事实，常译成"既然"。
如：Water is very important because we can't live without it.He didn't come yesterday as his mother was ill.I'll do it for you since you are busy.3．such…that, so…that, so that 引导结果状语从句的区别：such是形容词，修饰名词; so 是副词，修饰形容词或副词。
其结构如下：1) such + a (n)+ 形容词+单数可数名词+that……2) such+形容词+复数可数名词+that ……3) such +形容词+不可数名词+that……。
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。
四年级英语时间状语从句练习题20题含答案解析
四年级英语时间状语从句练习题20题含答案解析1.I was reading a book when my mother came in.A.whenB.whileC.asD.then答案解析：A。
本题考查when 的用法。
when 表示“当……的时候”，引导时间状语从句。
while 通常表示两个动作同时进行，as 也表示两个动作同时进行，但本题中妈妈进来是一个短暂的动作，用when 更合适。
then 不是时间状语从句的引导词。
2.I was doing my homework while my brother was playing games.A.whenB.whileC.asD.and答案解析：B。
while 强调两个动作同时进行。
when 虽然也可引导时间状语从句，但在这里不如while 贴切。
as 也表示同时，但没有while 常用。
and 是并列连词，不是时间状语从句引导词。
3.My father was watching TV as I was having dinner.A.whenB.whileC.asD.but答案解析：C。
as 表示两个动作同时进行，符合本题语境。
when 和while 虽然也可引导时间状语从句，但这里as 更能体现出“一边……一边……”的同时性。
but 是转折连词，不是时间状语从句引导词。
4.I saw a beautiful bird when I was walking in the park.A.whenB.whileC.asD.for答案解析：A。
when 引导的时间状语从句，表示“当……的时候”，符合本题语境。
while 通常用于两个动作同时进行，as 也表示同时，但这里看到鸟是一个瞬间动作，用when 更合适。
for 不是时间状语从句引导词。
5.I was listening to music while my sister was dancing.A.whenB.whileC.asD.or答案解析：B。
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区别以及过去进行时(三)
(三)when, while区别以及过去进行时语法：1.连词when 和while的用法。
（1）若主句表示的是一个短暂性动作，从句表示的是一个持续性动作，两者都可以用。
He fell asleep when / while he was reading.（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。
Don’t talk while you’re eating.（3）若从句是一个短暂性动作，主句是一个持续性动作，则用when而不用while。
It was raining hard when we arrived.（4）when 可作并列连词，表示“这时（突然）”；while也可以用作并列连词，表示“然而；却（对比）”。
We were about to start when it began to rain. 我们正要出发，这时天开始下雨了。
He likes coffee, while she likes tea. 他喜欢咖啡，而她却喜欢茶。
2.过去进行时。
(1)定义：表示过去某个具体时刻正在进行的事情或动作。
(2)结构: was / were + doing (现在分词)(3)用法①：表示过去某段时间内持续进行的动作或事情。
We were watching TV from seven to nine last night.②表示在过去某个时间点发生的事情。
What was she doing at nine o’clock yesterday?专项练习：一、选择题。
（）1.Tom rushed into the house his mother was cooking.A. asB. beforeC. whileD. after（）2. -----Mom, shall we have supper now?-----Oh, we won’t have supper your dad comes back.A. untilB. sinceC. whileD. after（）3.-----Tom, you look tired this morning. What’s wrong?-----I was so busy that I didn’t go to bed 12 o’clock last night.A. untilB. whenC. thoughD. unless（）4. Jack likes reading a newspaper he is having breakfast.A. andB. whileC. because（）5. -----Ring me up you come to my house, will you?-----Sure, I will.A. thoughB. whileC. beforeD. until（）6. Eddie was sleeping Millie was reading a magazine.A. untilB. whileC. beforeD. after（）7. the 632-meter Shanghai Tower is finished, it will be the second tallest building in the world.A. WhenB. SinceC. BeforeD. Unless（）8.Mary a dress when she cut her finger.A. madeB. is makingC. was makingD. makes （）9. When Jim’s mother came in, he his homework.A. is doingB. has doneC. was doing（）10. -----What did you do yesterday evening, Gina?-----I Titanic 3D in the City Cinema.A. watchB. watchedC. am watchingD. will watch （）11. Paul and I tennis yesterday. He did much better than I.A. playB. will playC. playedD. are playing（）12. -----I call you at 6 o’clock yesterday evening, but nobody answered.-----I’m sorry. I my friend downloaded the movie Kung Fu Panda 2 when the telephone rang.A. would helpB. helpedC. was helping（）13. Yesterday evening, I along the street when I suddenly met my math teacher.A. walkB. walkedC. was walkingD. am walking（）14. The girl with two cats in the yard when the earthquake happened.A. was playingB. is playingC. are playingD. were playing（）15. -----What did Mr. Smith do before he came to China?-----He in a car factory.A. workedB. worksC. is workingD. will work综合练习：一、完形填空。
(完整版)when和while区别及专项练习-含答案(可编辑修改word版)
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。
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讲解三例句：
1. The girls are dancing while the boys are singing.
2. Kangkang 'mother is cooking when he gets home.
3. When/While Kan gka ng ' mother is cook ing, he gets home.
一、 用 when 或者while 填空
1. ___ Margo was talk ing on the phone, her sister walked in.
2. ___ we visited the school, the childre n were playi ng games.
3. ___ Sarah was at the barber ' was going to class.
4. ___ I saw Carlos, he was weari ng a gree n shirt.
5. ___ Alle n was clea ning his room, the phone rang.
6. ___ Rita bought her new dog; it was weari ng a little coat.
7. He was drivi ng along ______ sudde nly a woma n appeared.
8. ___ Jake was waiting at the door, an old woman called to him.
9. He was read ing a book _____ sudde nly the telepho ne rang.
10. ____ it bega n to rain, they were play ing chess.
二、 用所给动词适当形式填空
11. While Jake _________ (look) for customers, he _______ (see) a woma n.
12. They ________ (play) football on the playgro und whe n it ____ (beg in) to rain.
13. A stra nge box ______ (arrive) while we _________ (talk).
14. Joh n __________ (sleep) whe n some one __________ (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 whe n some one _________ (kno ck) at the door.
19. Mary and Alice are busy ____________ (do) their homework.
20. The teacher asked us ____________ (keep) the win dows closed.
21. I followed it _____________ (see) where it was going.
22. The students ______________ (play) basketball on the playground from 3 to 4 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 — whe n Wen chua n 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 _________________ f rom work? 5. 当我在做作业时，有人敲门。
_________ I was doing my homework, some one ___________ the door. 6. 当外星人正在买纪念品的时候，那个女孩报了警。
______ t he alien was buying the souvenirs, the girl _______ the police. 答案： I. while 2.whe n 3.while 4.whe n 5.while 6.whe n 7.When 8.While 9.When 10.When II. was look ing ,saw 12.were play in g,bega n 13.arrived, were talk ing 14.was sleep ing, stole15..was,sleep ing got 16.was cook ing, was wash ing 17.was sweep in g,left 18,was readi ng,k nocked 精品文档
精品文档
when 和while 用法区别专项练习
yesterday after noon.。