When与while练习
When 和 while 的专题训练
When 和while 的专题训练一．用括号内所给单词的适当形式填空。
1.While I (watch) TV, the bell (ring)2.While she (read)the newspaper ,the baby(fall) asleep .3.When my alarm went off ,I (dream) that I bought a new car .4.When it started to rain ,we (buy) some clothes on the street.5.Her mother in the kitchen when Mary got home at noon .A. cookedB. cooksC. was cookingD. is cooking6. you (read) when the teacher came in ?7.When we arrived there , a little boy by the side of the road.A. criedB. was cryingC. is cryingD. cries8.I (cook) a meal when you (ring) me.9. While she (watch) TV , she (hear) a sound outside the room.10. While we (wait) for the bus, a girl (run) up to us.11. I (telephone) a friend when Bob (come) .12. Jim (jump) on the bus when it (move) away .13. While mother (put) Cathy to bed ,the door bell (ring)14. While I (walk) in the park ,it (begin) to rain .15. She (not want) to stay in bed while the others (work) in the fields .16.They (take) photos when the rainstorm (come) .17.We (read) in the library while Linda (sleep) .18.It (snow) when we (arrive) at the station .19. While she (type) ,someone (knock) at the door .20.They (sing) while we were (dance) .21.He (ride) his bicycle when it began to rain.22. I (wash) my clothes when the phone rang.23. When I got to school yesterday morning ,it (rain) hard.二．单项选择1.________Amy was reading a book ,I came in.A. whenB. whileC. becauseD. though2. I was reading a book _______ he was watching TV. (when / while )3.Amy was reading a book _____ I came in.A. whenB. whileC. becauseD. though三．根据汉语提示完成句子1.当玛丽买饮料时，约翰正在照相。
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, 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。
whenwhile用法练习题
whenwhile用法练习题When/While 用法练习题When和While都是表示时间的连词，但它们在使用上有一些区别。
本文将为您介绍When和While的用法，并提供一些练习题供您巩固学习。
一、When 和 While 的基本用法1. 当表示“当……的时候”时：- When引导的从句表达的是一个已知或经常发生的情况，强调的是主句和从句的同步发生。
例句1：When I wake up in the morning, I usually drink a cup of coffee.例句2：I always turn off the lights when I leave the room.- While引导的从句则强调的是主句和从句的同时发生，而且从句的动作是主句动作的背景衬托。
例句1：While I was studying, my roommate was watching TV.例句2：I like listening to music while I am cooking.2. 当表示“每当……的时候”时：- When强调经常性或习惯性的动作或状态。
例句1：When it rains, she always takes an umbrella.例句2：He always feels sleepy when he reads before bed.- While则表示某一特定时间发生的动作。
例句1：While I was traveling in Europe, I visited many famous landmarks.例句2：He wrote postcards to his friends while he was on vacation.二、练习题1. ______ I was cooking dinner, the phone rang.2. His father always reads newspaper ______ eating breakfast.3. We always go for a walk in the park ______ it's sunny.4. ______ I was shopping in the mall, I saw my old friend.5. Tom always listens to music ______ he is doing his homework.6. ______ my sister was studying for her exam, I was playing video games.7. The cat scratched me ______ I was trying to give it a bath.8. We saw a shooting star ______ we were camping in the mountains.9. She likes to go swimming ______ it's hot outside.10. The children were playing in the yard ______ their parents were having a barbecue.三、答案解析1. While2. while3. when4. While5. while6. While7. while8. while9. when10. while四、总结通过以上练习题的答案解析，相信您对When和While的用法有了更好的理解。
when while 练习题
when while 练习题当我们学习英语时，经常会遇到关于when和while的用法。
这两个词都是表示时间的连词，但在不同的语境下有不同的用法。
为了帮助大家更好地理解和掌握这两个词的用法，下面为大家整理了一些练习题。
希望能对大家的学习有所帮助。
练习一：选择填空1. ________ the movie, I fell asleep.A. WhenB. While2. ________ I was sleeping, someone broke into my house.A. WhenB. While3. He always listens to music ________ he is doing homework.A. whenB. while4. ________ waiting for the bus, I met an old friend.A. WhenB. While5. I like to go for a walk ________ it is sunny.A. whenB. while练习二：句子改错1. When I will go to New York, I will visit the Statue of Liberty.2. While my friend was studying, I was watching TV.3. She always listens to music when she is cooking.4. I met my teacher when I was walking to school.5. While I can speak English fluently, my brother is still learning.练习三：完成句子1. ________ I was doing my homework, my mom called me.2. ________ I go to the gym, I like to listen to music.3. He always eats ice cream ________ it is hot outside.4. Please be quiet ________ I am talking on the phone.5. We arrived at the beach ________ the sun was setting.练习四：翻译句子1. 当我正在洗澡的时候，电话响了。
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。
when while练习题
when while练习题1. 完成下列句子，填入适当的"When"或"While"。
a) _______ I was cooking dinner, my friend called.b) _______ I was watching TV, the phone rang.c) _______ I was studying, my brother came into my room.d) _______ I was reading a book, it started to rain outside.e) _______ I was walking in the park, I saw my teacher.2. 选择正确的答案填入括号内。
a) _______ I was doing my homework, my favorite song came on the radio.1. When2. Whileb) _______ I was driving to work, I noticed a beautiful sunrise.1. When2. Whilec) _______ I was eating breakfast, my cat jumped onto the table.1. When2. Whiled) _______ I was sleeping, my phone rang.1. When2. Whilee) _______ I was waiting for the bus, a stranger asked me for directions.1. When2. While文章正文：When and while are commonly used to talk about actions or events happening at the same time. However, there is a slight difference in their usage."When" is used to refer to a single, specific event that happens at the same time as another event. It emphasizes the momentary coexistence of two actions.For example, in the sentence "When I was cooking dinner, my friend called," the cooking and the phone call happened simultaneously. The focus is on the coincidence of these two events occurring at the same time."On the other hand, "while" is used to describe two ongoing or continuous actions that happen at the same time. It emphasizes the duration of the actions.For example, in the sentence "While I was cooking dinner, my friend called," both the cooking and the phone call were happening over a period of time. The focus is on the actions being carried out at the same time.Now let's move on to the practice questions:1. Fill in the blanks with "When" or "While":a) _______ I was cooking dinner, my friend called.b) _______ I was watching TV, the phone rang.c) _______ I was studying, my brother came into my room.d) _______ I was reading a book, it started to rain outside.e) _______ I was walking in the park, I saw my teacher.2. Choose the correct answer and fill in the brackets:a) _______ I was doing my homework, my favorite song came on the radio.1. When2. Whileb) _______ I was driving to work, I noticed a beautiful sunrise.1. When2. Whilec) _______ I was eating breakfast, my cat jumped onto the table.1. When2. Whiled) _______ I was sleeping, my phone rang.1. When2. Whilee) _______ I was waiting for the bus, a stranger asked me for directions.1. When2. WhileIn conclusion, "when" and "while" both indicate actions happening simultaneously, but "when" emphasizes a single specific event, while "while" highlights ongoing or continuous actions. Practice using these words to improve your understanding and fluency in English.。
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。
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。
过去进行时中“when和while讲解与练习
过去进行时中“when和while讲解与练习过去进行时表示过去某一时刻或者某段时间正在进行或发生的动作，常和表过去的时间状语连用，如：1. I was doing my homework at this time yesterday.昨天的这个时候我正在做作业。
2. They were waiting for you yesterday.他们昨天一直在等你。
3. He was cooking in the kitchen at 12 o'clock yesterday.昨天12点，他正在厨房烧饭。
过去进行时的构成：肯定形式：主语+was/were+ V-ing否定形式：主语+was not (wasn't)/were not (weren't)+V-ing疑问形式：Was/Were+主语+V-ing。
基本用法：1. 过去进行时表示过去某一段时间或某一时刻正在进行的动作。
常与之连用的时间状语有，at that time/moment, (at) this time yesterday (last night/Sunday/week…), at+点钟+yesterda y (last night / Sunday…)，when sb. did sth.等时间状语从句，如：1）What were you doing at 7p.m. yesterday?昨天晚上七点你在干什么？2）I first met Mary three years ago. She was working at a radio shop at the time.我第一次遇到玛丽是在三年前，当时她在一家无线电商店工作。
3）I was cooking when she knocked at the door.她敲门时我正在做饭。
2.when后通常用表示暂短性动词，while后通常用表示持续性动词，而while所引导的状语从句中，谓语动词常用进行时态，如：When the car exploded I was walking past it. = While I was walking past the car it exploded.3.when用作并列连词时，主句常用进行时态，从句则用一般过去时，表示主句动作发生的过程中，另一个意想不到的动作发生了。
while和when练习题
while和when练习题1. 填空题：根据句子意思和语境，选择适当的while或when填空。
a) _______ I was walking in the park, it started to rain.b) _______ I was cooking dinner, the phone rang.c) He fell asleep _______ watching TV.d) _______ she was studying for the exam, her phone rang.e) _______ the teacher was explaining the lesson, the students were taking notes.2. 改错题：下面的句子中，有两处错误。
请找出并改正。
a) While I came home, I realized that I left my keys at the office.b) I saw a beautiful rainbow when I was walked in the garden.3. 选择题：选择最佳答案填入括号内。
a) _______ I was waiting for the bus, I met my old friend.1. While2. When3. Bothb) They went to the beach _______ the weather was sunny.1. while2. when3. wherec) _______ she was playing the piano, her brother was singing.1. While2. When3. Both4. 完成句子：根据句意，用while或when完成下列句子。
a) _______ I was driving to work, I saw a car accident.b) He fell asleep _______ he was reading a book.c) _______ we were having dinner, the power went out.d) _______ she was shopping, she found a beautiful dress.5. 翻译：将下列句子翻译成英文。
when和while区别及专项练习 - 含答案
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。
进行时when和while练习
练习：用when或者while填空。
（1）we were waiting for the bus, a girl ran up to us.（2）I was telephoning a friend Bob came in.（3）Jim jumped on the bus it was moving away.（4）She wanted to stay in bed the others were working in the fields.（5）mother was putting Cathy to bed, the door bell rang. （6）He was listening to music he was riding his bike. （7）They didn’t make a model ship I saw him.（8）He is strong his brother is weak.二、选择题。
（）1. I ______ a meal when you _____ me.A. cooked, were ringingB. was cooking, rangC. was cooking, were ringingD. cooked, rang（）2. He said he _____ to draw a plane on the blackboard at that time.A. triesB. triedC. was tryingD. will try（）3. While she ______ TV, she ______ a sound outside the room.A. was watching, was hearingB. watched, was hearingC. watched, heardD. was watching, heard（）4. They _____ a football game from 7 to 9 last night.A. were watchingB. watchC. watchedD. arewatching（）5. What book ____ you ______ when I ____ you at four yesterday afternoon?A. did, read, was seeingB. did, read, sawC. were, reading, sawD. were, reading, was seeing （）6. It was Friday evening. Mr and Mrs. Green _____ ready to fly to England.A. are gettingB. getC. were gettingD. got （）7. Lei Feng _____ always _____ of others when he ______ in the army.A. is, thinking, wasB. was, thinking, isC. did, think, isD. was, thinking, was（）8. A girl ______ my pen fall off the table when she _____ me.A. saw, passedB. was seeing, passedC. was seeing, passedD. was seeing, was passing（）9. We ____ for Tom at ten last Sunday. He often kept us ______.A. were waiting, waitingB. were waiting, waitC. waited, waitingD. waited, wait（）10. He ____ his father on the farm the whole afternoon last Saturday.A. helpsB. would helpC. was helpingD. is helping （）11. While mother _______ some washing, I _____ a kite for Kate.A. did, madeB. was doing, madeC. was doing, was makingD. did, was making（）12. “_______ you angry then?”“They ______ too much noise.”A. are, were makingB. were, were makingC. are, madeD. were, made（）13. He ____ some cooking at that time, so _____ meA. did, heardB. did, didn’t hearC. was doing, heardD. was doing, didn’t hear（）14. This time yesterday Jack _____ his bike. He _____ TVA. repaired, didn’t watchB. was repairing,watchedC. repaired, watchedD. was repairing, wasn’t watching （）15. His parents wanted to know how he _____ on with his new classmates.A. was gettingB. getsC. is gettingD. will get （）16. I saw him____ the rabbit just now.A. to followB. playsC. playing（）17.Tony____ down from his bike when he rode to school.A. fallsB. fellC. felt（）18. When he was a small child, I often saw him _____ down.A. fallB. fellC. felt（）19. _____Tony was riding his bike, he had an accident.A. WhenB. WhileC. A and B（）20. The teacher came into the room _____we were writing.A. afterB. asC. while（）21. When Jimmy entered the room, everyone _____him.A. was smiling toB. were smiling atC. was smiling at （）22.-Why didn’t you go to the cinema with us that afternoon?--I _____ at the station for my uncle from Beijing.A. was waitingB. have waitedC. waited三、句型转换。
when和while的例句
when和while的例句when和while的例句:1. When I arrived at the party, everyone was already dancing.当我到达派对时，每个人已经在跳舞了。
2. While I was studying for my exam, my phone kept ringing.我在为考试复习时，手机一直在响。
3. When the sun sets, the sky turns a beautiful shade of orange.太阳落山时，天空变成了美丽的橙色。
4. While she was cooking dinner, she accidentally burned the food.她在做晚饭的时候，不小心把食物烧焦了。
5. When the baby started crying, the mother immediately picked him up.当宝宝开始哭泣时，妈妈立刻把他抱起来。
6. While I was waiting for the bus, I saw an old friend from high school.我在等公交车的时候，看到了一个高中时的老朋友。
7. When the teacher entered the classroom, the students quickly sat down.当老师走进教室时，学生们迅速坐下。
8. While I was walking in the park, I saw a beautiful butterfly.我在公园散步时，看到了一只美丽的蝴蝶。
9. When he opened the door, he was surprised to seehis friends waiting outside.当他打开门时，他惊讶地看到他的朋友们在外面等着。
10. While the children were playing in the yard, the parents were preparing dinner.孩子们在院子里玩耍时，父母们在准备晚餐。
whenwhile典型例句
A.Lost
B. Being lost
B.C. Losing
D. To be lost
C.He tried to escape ______________.
D.punished
B. being punished
E.C. to be punished D. punishing
F.
It’s interesting for children to see a house being built. 孩子们看造房子是挺有趣的事。
She thought I was talking about her daughter, _______, in fact, I was talking about my daughter. A. whom B. where C. which D. while
I was about to pick up the receiver________ the phone stopped ringing. A. when B. while C. as D. after
B.I do every single bit of housework ____ my husband just does the dishes now and then.
C. A. while B. since C. when D. as
____ it is expected that students come to university with the ability to take a good set of notes , this is not always the case.
The play________ last month aimed mainly to reflect the local culture. A.produced B.B. being produced
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When与while练习
用when或while 填空
1. ________ Tom was eating supper, it began to rain outside.
2. Don't use your phone________ you are driving a car.
3. What were you doing ________ Mr. Zhou came in ?
4. Jim is good at math _____ Mary is good at English.
5. We were watching TV _____ the electricity was off..
6. ________Peter was sleeping; a thief broke into his house.
7. It snowed ________ we arrived in Tokyo.
8. She left her hometown________ she was five.
9. I was studying in the library__________ the UFO landed
选用when或while填空。
1. My wallet dropped on the ground ________ I was walking.
2. ________ I was falling asleep there was a loud knock on the door.
3. ________ he was reading, the telephone rang.
4. Were the students listening to the teacher carefully ________ the teacher was giving a
lesson?
5. ________ the telephone rang, I was doing my homework.
6. Was she playing games ________ the bell was ringing?
7. The days get longer ________ spring comes.
8. Lucy was listening to the radio ________ Lily was watching TV.
9. ________ we were batting on the lake, we saw a fish jump out of the water.
10. They have their PE lesson indoors ________ it rains.
用when, while填空：
1. I was listening to the radio _________ he came in.
2. ___________ the teacher came in, we were talking.
3. _________ he came back, I was doing some washing.
4. I was cooking dinner __________ they came home.
5. He fell asleep ____________ he was reading.
6. He asked me a question ____________ I was speaking.
7. Jim hurt his arm ____________ he was playing tennis.
8. ______________ she was waiting for the train, she became very impatient.
9. He was watching TV _____________ she was cooking.
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.
11. She saw a taxi coming ______ the woman was waiting under the streetlight.
12. the allien was in the museum, I called the police.
13. The boy was walking down the street a UFO landed.
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.
用所给动词适当形式填空
1. While Jake __________(look) for customers, he _______(see) a woman.
2. They ____________(play) football on the playground when it ______(begin) to rain.
3. A strange box ________(arrive) while we _________ (talk).
4. John ____________(sleep) when someone __________(steal) his car.
5. Father still (sleep)when I (get)up yesterday morning.
6. Grandma (cook) breakfast while I (wash) my face this morning.
7. Mother (sweep)the floor when I (leave)home.
8. I (read) a history book when someone (knock) at the door.
9. Mary and Alice are busy (do)their homework.
10. The teacher asked us (keep) the windows closed.
11. I followed it (see)where it was going.
12. The students (play)basketball on the playground from 3 to 4 yesterday afternoon..。