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过去进行时的结构及句型变化

过去进行时的结构及句型变化

过去进行时由" was/ were+现在分词"构成。如:

I was doing my lessons then. 那时,我在做功课。

We were cleaning the house. 我们在打扫房子。

过去将来时态的肯定句、否定句和疑问句形式:

肯定句例句: I was walking down the street when a UFO landed.

否定句例句: I wasn't walking down the street when a UFO landed.

一般疑问句例句: Were you walking down the street when a UFO landed?

特殊疑问句例句: What were you doing when a UFO landed?