一、 概念和用法:过去进行时。

表示过去在某一时间段或某一段时间内正在发生或进行的动作或状态。其形式为 主语+was /were + 动词的现在分词。常与表示过去的时间状语连用，如:last night,last Saturday，yesterday等;或者与when,while,as引导的过去时间状语连用。在英语时态中，"时"指动作发生的时间，"态"指动作的样子和状态。例如:We were watching TV from seven to nine last night. 昨天晚上七点到九点的时候我们在看电视。What was he researching all day last Sunday? 上周日他一整天都在研究什么?时间段

二、 过去进行时可以表示在过去某个时间点发生的事情。时间点可以用介词短语、副词或从句来表示。如:What was she doing at nine o'clock yesterday? 昨天晚上九点她正在做什么? (介词短语表示时间点) When I saw him he was decorating his room. 当我看见他的时候他正在装饰房间。(when从句表示时间点)

三、 在复合句中，如果主要动作和背景动作都是延续的或同时发生的，那么主从句的动词都可用过去进行时。例如:While he was waiting for the bus,he was reading a newspaper.他边等车边看报。(两个动作都是延续的) He was cleaning his car while I was cooking. 他擦车时我在做饭。(两个动作同时进行)

四、 通常不能用于过去进行时的动词主要有:agree,be动词,believe,belong,care,forget,hate,have(拥有)，hear,know,like,love,mean,mind,notice,own,remember,seem,suppose,understand,want,wish等。静态动词 暂时性动词 同样也不能用过去进行时。

例如:错误:I was knowing the answer.

正确:I knew the answer. 我知道答案。

错误:I wasn't understanding him.

正确:I didn't understand him. 我不明白他的意思。

1. 过去进行时由"主语+was/were + doing"构成

eg: We were having supper when the phone rang. 我们正在吃晚饭时电话响了。

2. 过去进行时的否定式由"主语+was/were not +doing"构成

eg: This time yesterday Jack was not watching TV. He was repairing his bike. 昨天这个时候，杰克不是在看电视，而是在修理自行车。

3. 过去进行时的疑问式由"was/were +主语+doing"组成

eg: Were you playing basketball at four yesterday afternoon? 昨天下午四点你们在打篮球吗?

肯定句:主语+was/were+v-ing+其他

否定句:主语+was/were+not+v-ing+其他

一般疑问句:Was/Were+主语+v-ing+其它他

答语:Yes,主语+was/were.或No,主语+wasn't/weren't.

特殊疑问句:特殊疑问词+一般疑问句+其他

1、We were having supper when the phone rang. 我们正在吃晚饭时，电话响了｡

2、This time yesterday Jack was not watching TV. 昨天这个时候杰克没看电视。

3、He was repairing his bike.他在修理自行车。

4、When/While we were having supper, the light went out. 我们正在吃饭时，灯熄灭了。

5、While we were talking, the teacher came in. 当我们正在谈话时,老师进来了。

6、While he was waiting for the bus, he was reading a newspaper.他边等车边看报。

7、He was cleaning his car while I was cooking. 他擦车时，我正在做饭。

8、Tom was getting up at six o'clock every day that week. 汤姆那一周里每天都是六点钟起床。

9、She was reading book at this time yesterday.她昨天这个时间正在看书。