人教版八年级英语下册《What were you doing when the rainstorm came?》SectionA PPT课件下载(第2课时)，共33页。
Discuss
What did the writer think of the rainstorm?
Although the storm broke many things apart, it brought families and neighbors closer together.
过去进行时
定义：表示过去某个时刻或某一时间段正在进行或发生的动作。
时间标志词：
at this/that time yesterday, at 9:00 yesterday morning, all night等；
或以when, while 引导的时间状语从句。
构成：
基本结构：主语+was/were + doing +其他。
否定形式：主语+wasn’t/weren’t +doing+其他。
一般疑问句：Was/Were+主语+doing+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：特殊疑问词+ was/were +主语+doing+其他？
when 和 while 从属连词， 当…的时候， 引导时间状从
1. When my mother came back, I was cleaning my room.
came 非延续性动词 时间点
2. He fell asleep when he was reading.
read 延续性动词 时间段
3. While my mother was cooking, I was doing my homework.
cook 延续性动词， 时间段，
4. They were singing while we were dancing.
dance 延续性动词， 时间段
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关键词：What were you doing when the rainstorm came? PPT课件免费下载，.PPT格式；