过去进行时
过去进行时(Past continuous tense或Past Progressive tense)表示过去在某一时刻或某一段时间内发生或进行的动作或状态.
We were having supper when the phone rang.我们正在吃晚饭时,电话响了.
This time yesterday Jack was not watching TV.昨天这个时候杰克没看电视.
He was repairing his bike.他在修理自行车.
When/While we were having supper,the light went out.我们正在吃饭时,灯熄了.
While we were talking,the teacher came in.当我们正在谈话时,老师进来了.