(完整版)when和while区别及专项练习-含答案
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。
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 ________ .。
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。
(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。
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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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。