人教版八年级英语下册第五单元语法知识 UNIT 5 What were you doing when the rainstorm came 过去进行时 —What were you doing at eight last night 昨天晚上八点你正在做什么？ —I was taking a shower. 我正在洗淋浴。（教材P36） 2. —What was he doing when the rainstorm came 暴风雨来临时，他正在做什么？ —He was reading in the library when the rainstorm came. 暴风雨来临时，他正在图书馆读书。（教材P36） 3. —What was Jenny doing while Linda was sleeping 琳达睡觉时，珍妮正在做什么？ —While Linda was sleeping, Jenny was helping Mary with her homework. 琳达睡觉时，珍妮正在帮助玛丽做家庭作业。（教材P36） 语法概述 一、过去进行时的基本用法 定义：表示在过去某一时刻或某一时间段内正在进行或持续发生的动作 构成：was/were + 现在分词 时间状语：at that time, at this time yesterday等或由when或while引导的时间状语从句 They were having an English class at 9:00 yesterday morning. 昨天上午9点他们正在上英语课。 二、过去进行时的基本句型 肯定句：主语 + was/were + 现在分词 + 其他. 否定句：主语 + wasn't/weren't + 现在分词 + 其他. 一般疑问句 构成：Was/Were + 主语 + 现在分词 + 其他 肯定回答：Yes, 主语 + was/were. 否定回答：No, 主语 + wasn't/weren't. 特殊疑问句：What was/were + 主语 + 现在分词 + 其他 例题 [2024河北中考] At this time yesterday, I _____ a science exam here. A. take B. was taking C. am taking D. will take 解析：句意为“昨天这个时候我正在这里进行科学考试。由句中的时间状语At this time yesterday可知时态为过去进行时。 答案：B I was reading a book in the library at that time. 那时我正在图书馆里看书。 —Were you playing basketball at four yesterday afternoon 昨天下午四点你们在打篮球吗？ —Yes, we were. /No, we weren't. 是的，我们在打。/不，我们没在打。 What was he doing at six last night 昨晚六点他正在做什么？ 三、连词when与while的区别 1. when后面可用非延续性动词，也可用延续性动词；而while后面通常用延续性动词，由它引导的状语从句中，谓语动词常用进行时态。 When I came home, my mother was cooking dinner. 当我到家时，我妈妈正在做晚饭。 While I was watching TV, he came in. 当我正在看电视时，他进来了。 2. when用作连词时，主句用过去进行时，从句用一般过去时，可表示在主句动作发生的过程中，另一个意想不到的动作发生了。此时when相当于and at that time。 I was just leaving when the telephone rang. 正当我要离开时，电话响了。 3. while还可表示对比，意为“而；然而”。 I like English while my brother likes math. 我喜欢英语，而我弟弟喜欢数学。 四、一般过去时与过去进行时的用法比较 过去进行时强调动作在过去某一时刻或某一时间段正在进行或持续，而一般过去时表示动作已经完成。 He was writing a composition last night. 他昨晚在写作文。（不一定写完） He wrote a composition last night. 他昨晚写了一篇作文。（已经写完） 4. [2024黑龙江绥化中考·改编] While Sally _____ the housework, her mother came back from work. A. are doing B. was doing C. did D. done ... ...
