最新when和while区别及专项练习---含答案

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

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when 和while 用法区别专项练习

yesterday after noon.