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课件网) Unit 7 Space exploration 单元学习目标 Grammar 目 录 CONTENTS 02 课堂练习 01 语法聚焦 语法聚焦 过去进行时 1. 过去进行时的用法： (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。常用的时间状语有：at that time / moment、 (at)this time yesterday / last night / last Sunday / last week …、 at+钟点+yesterday / last night / last Sunday …、由when / while引导的时间状语从句等。如： What were you doing at 5 p.m. yesterday 昨天下午5点你在干什么？ (2)连词when和while的用法： ①由when引导的时间状语从句中，谓语动词可用短暂性动词，也可用延续性动词。如： We were watching a movie when the power went out. = When we were watching a movie,the power went out. 停电时我们正在看一部电影。 ②由while引导的时间状语从句中，谓语动词通常用延续性动词，因此在while引导的时间状语从句中，谓语动词常用进行时态，且while可以连接两个正在进行的动作。如： They arrived while we were having dinner. 他们来到时我们正在吃饭。 I was cleaning my bedroom while my brother was washing the dishes.当我哥哥在洗碗的时候，我在打扫我的卧室。 2. 过去进行时的构成： 过去进行时的基本结构是“was / were+动词的现在分词”。 句式 句型结构 举例 肯定句 主语+was / were+动词的现在分词. Linda was shopping in a mall at nine last night. 琳达昨晚9点在商场购物。 否定句 主语+was not(wasn't) / were not(weren't)+动词的现在分词. At that moment, I wasn't doing anything. 那会儿我什么也没干。 句式 句型结构 举例 一般疑问句 Was / Were+主语+动词的现在分词 肯定回答：Yes, 主语+was / were. 否定回答：No, 主语+wasn't / weren't. —Was he having a bath at that time？他那时正在洗澡吗？ —Yes, he was. 是的，他正在洗澡。/ No, he wasn't. 不，他没有在洗澡。 特殊疑问句 特殊疑问词+was / were+主语+动词的现在分词+其他 What were you doing at that time 那时你在干什么 课堂练习 一、用所给单词的适当形式填空（★★） 1. While we _____(wait)for the bus this morning, a girl _____ (run) to us. 2. I _____(telephone)a friend when Bob_____ (come)in just now. 3. I _____ (do) my homework at 10：00 yesterday evening. were waiting ran was telephoning came was doing 4. My grandparents _____ (take) a walk from seven to eight last night. 5. While my mother _____(put)Cathy to bed, the doorbell _____(ring). 6. As I _____ (walk)in the park at 4 p.m. yesterday, it _____(begin)to rain. were taking was putting rang was walking began 7. George _____(read)when he _____ (hear)a knock at the door last night. 8. He said he _____ (help) his sister with homework at that time. 9. Someone _____ (follow) her. She was frightened. 10. —Was your father at home at that moment —Yes, he was. He _____(have) an online meeting then. was reading heard was helping was following was having 二、单项填空（★★） ( )1. Suzy _____ her bedroom at this time yesterday, so she didn't go shopping. A. tidies B. tidied C. is tidying D. was tidying ( )2. Mary _____ a picture when her dad got home yesterday evening. A. draws B. was drawing C. is drawing D. will draw D B ( )3. —Cindy, my sunglasses are on the floor and they are broke ... ...
