【—人教版初中二年级下册英语第三单元语言要点教材】当UFO着落的时候，你正在做什么？下面就是老师大家带来的对第三单元What were you doing when the UFO arrived? 语言要点的相关介绍。

　　Unit 3 What were you doing when the UFO arrived? 口语点津

　　下面的两段对话你看着熟悉吗？他们都选自Go for it!教材Unit 3 What were you doing when the UFO arrived? 你能告诉我它们各自都会用在哪些场合吗？

　　Dialogue 1:

　　A: What was he doing when the UFO arrived?

　　B: He was sleeping late when it arrived.

　　这个对话告诉我们：当我们讲述过去正在发生的事情时，可以用过去进行时。

　　Dialogue 2:

　　A: What was the girl doing when the UFO took off?

　　B: While the girl was ...

　　A: When the UFO took off the man was ...

　　这个对话告诉我们：当我们讲述过去正在发生的事情时，可以用由when 或while 引导的时间状语从句。

　　这一章是对过去进行时态的学习，就是过去的某个时刻，你正在做什么？

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