用be doing when do造5句

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用be doing when do造5句

用be doing when do造5句
用be doing when do造5句

用be doing when do造5句
这个结构是讲述了 从句动作发生的时候,主句主语正在做某事.从句一般多用于过去时,主句多用过去进行时.
e.g I was studying when my phone rang. 我正学习呢我的电话响了./电话响的时候我正在学习.

I was wayching TV when he came in.
The students are sitting in the classroom when the bell rings.
The thief was stoling when she went home.