B.过去进行时

过去进行时是由“was / were +现在分词”构成的。

I was doing my homework at this time yesterday.

昨天的这个时候我正在做作业。

Were you expecting him yesterday?

你昨天一直在等他吗？

They were not talking when I came in.

我进来的时候他们没在说话。

①过去进行时的基本用法

a.表示在过去某一时刻正在发生的动作或该动作与过去的另一动作同时发生 I was having supper at 7:00 yesterday evening.

昨天晚上7点我正在吃晚饭。

She was playing the piano while I was reading the newspaper.

她弹钢琴时我在看报。

提示：

当句子意思很清楚时，我们也可以把两个动词都换成一般过去时。 We listened closely while the teacher read the text.

老师读课文时，我们都仔细地听着。

b.表示过去一段时间内正在进行的动作

We were talking about you the whole morning.

我们整个上午都在说你。

He was watching TV at home from 3:00 to 5:00 yesterday afternoon.

昨天下午从3点到5点他一直在看电视。

c.表示按计划、安排过去将要发生的事

He told me that he was going soon.