我举个例子
When the teacher came in ,I was reading.
I had just fallen asleeep when the telephone rang.
I was just about to go out when he came in
by the time引导的时间状语从句和when引导的时间状语从句有区别吗
我举个例子
When the teacher came in ,I was reading.
I had just fallen asleeep when the telephone rang.
I was just about to go out when he came in