when和while区别及专项练习-含答案

用法区别专项练习和whilewhen三、完成下面句子，词数不限

1.飞机在伦敦起飞时正在下雨。讲解三例句：

It when the plane 1. The girls are dancing while the boys are singing.

in London.

2.2. Kangkang'你记得汶川大地震时你在做什么吗？s mother is cooking when he gets home.

Do you remember what you 3. When/While Kangkang's mother is cooking, he gets home. when Wenchuan Earthquake .

3. 当铃声想起的时候，我们正在操场上玩得很开心。一、用when或者while填空We

on the playground when the bell . 1.______ Margo was talking on the phone, her sister walked in.

4.2.______ we visited the school, the children were playing games. 当妈妈下班回家时，你在做什么？

3.______ Sarah was at the barber's, I was going to class. when Mum

from work?

5.4.______ I saw Carlos, he was wearing a green shirt. 当我在做作业时，有人敲门。

I was doing my homework, someone the door. 5.______ Allen was cleaning his room, the phone rang.

6.当外星人正在买纪念品的时候，那个女孩报了警。 6.______ Rita bought her new dog; it was wearing a little coat.

7. He was driving along ________ suddenly a woman appeared. the alien was buying the souvenirs, the girl the police.

8. _____ Jake was waiting at the door, an old woman called to him.

9. He was reading a book ______suddenly the telephone rang.

答案：10. ______ it began to rain, they were playing chess.

1.while

2.when

3.while

4.when

5.while

6.when

7.When

8.While

9.When 10.When 二、用所给动词适当形式填空

11.was looking ,saw 12.were playing,began 13.arrived, were talking 14.was sleeping, 11. While Jake __________ (look) for customers, he _______ (see) a woman.

stole15..was,sleeping 12. They __________ (play) football on the playground when it _____ (begin) to rain. got 16.was cooking,

was washing 17.was sweeping,left 18,was reading,knocked 13. A strange box ________ (arrive) while we _________ (talk).

19,doing 20.to keep 21. to see 22.were playing 14. John ____________ (sleep) when someone

__________ (steal) his car.

1. was raining, took off (sleep) when I 15. Father still (get) up yesterday morning.

2. were doing ,took place (cook) breakfast while I (wash) my face this morning. 16. Grandma

3. were having fun, rang

17. Mother (sweep) the floor when I (leave) home.

4. what were you doing ,came back home 18. I (knock) at the door. (read) a

history book when someone

5. while /when, knocked at 19. Mary and Alice are busy (do) their homework.

6. while, called

20. The teacher asked us (keep) the windows closed.

21. I followed it (see) where it was going.

(play) basketball on the playground from 3 to 4 22. The students

yesterday afternoon.