1、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. Kangkangs mother is cooking when he gets home.3. When/While Kangkangs 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 childre
2、n were playing games. 3._ Sarah was at the barbers, 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 wai
3、ting 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
4、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 whe
5、n 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。 It when th
6、e 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 souveni
7、rs, 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, stole15was,sleeping got 16.was cooking, was washing 17.was sweeping,left 18,was reading,knocked19,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
