知识总结：专升本英语时态之过去进行时，赶紧来看看！

过去进行时

1.概念：表示过去某段时间或某一时刻正在发生或进行的行为或动作。

My brother fell while he was riding his bicycle and hurt himself.

我兄弟骑车时摔了下来，受了伤。

When I got to the top of the mountain,the sun was shining.

我到达山顶时，阳光灿烂。

知识总结：专升本英语时态之过去进行时，赶紧来看看！

2.时间状语：at this time yesterday,at that time或以when引导的谓语动词是一般过去时的时间状语等。

3.基本结构：was/were+doing

否定形式：was/were+not+doing.

一般疑问句：把was或were放于句首。

4.用法

1)过去进行时表示过去某段时间内持续进行的动作或者事情。

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。

2)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。

What was she doing at nine o'clock yesterday?

昨天晚上九点她在做什么？(介词短语表示时间点)

She was doing her homework then.

那个时候她正在写作业。（副词表示时间点）

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)

3)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。

When 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)