Unit 3 Topic 3 when while时间状语从句练习题 2023-2024学年仁爱科普版八年级英语上册

区分 when 和while When ／While ／As we were dancing，a stranger came in．（dance为延续性动词）当我们跳舞时，一位陌生人走了进来。   ②Sorry，I was out when you called me（call为短暂性动词）对不起，你打电话时我刚好外出了。   小结: when是at or during the time that, 既指时间点，也可指一段时间；因此when引导的时间状语从句中的动词可以是 ，也可以是 ，  而while是during the time that，只指 ，while从句中的动词必须是 。   另外: ①如果从句和主句的动作同时发生，两句都用过去进行时的时候，多用while引导，②while还有然而的意思   ①He is dancing while she is drawing. ②. He is strong while his brother is weak.     他长得很结实而他弟弟却很瘦弱。 常见的短暂性动词有open, close, finish, begin, come, go, arrive, reach, get to, leave, move, borrow, buy, die, knock, ring 常见的延续性动词有stay, live, learn, study, work, wait, watch, sing, read等 一、用when或者while填空 1. Margo was talking on the phone, her sister walked in. 2. I saw Carlos, he was wearing a green shirt. . 3. Allen was cleaning his room, the phone rang. 4. Rita bought her new dog, it was wearing a little coat. 5. He was driving along suddenly a woman appeared. 6. He was reading a book suddenly the telephone rang. 7. it began to rain, they were playing chess. 8.Lily was cooking Maria was watching TV. 二、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. Grandma (cook) breakfast while I (wash) my face this morning. 5. Mother (sweep) the floor when I (leave) home. 6. I (read) a history book when someone (knock) at the door. 7. Mary and Alice are busy (do) their homework. 8. The teacher asked us (keep) the windows closed. 9. I followed it (see) where it was going. 10. The students (play) basketball on the playground from 3 to 4 yesterday afte