a.What were you doing when it rained.b.What were you doing while it was raining.

分类: 作业答案 • 2021-12-20 02:48:14

问题描述：

答

b
a的语义不通。

答

两个句子都对.第一句用 when it rained 只是表示“当下雨的时候”,第二句用 while it was raining 强调在下雨进行的时候.