
What were you doing when the telephone rang? 电话响的时候你正在干什么?
结构:
What were/ was +主语 doing when 主语+动词过去式? 例如:
What were the students doing when the teacher came in?
老师进来的时候学生们正在干什么?
表示当一件事发生的时候某人正在做什么

What were you doing when the telephone rang? 电话响的时候你正在干什么?
结构:
What were/ was +主语 doing when 主语+动词过去式? 例如:
What were the students doing when the teacher came in?
老师进来的时候学生们正在干什么?
表示当一件事发生的时候某人正在做什么