简介： ppt制作 1、表示过去某个时间发生的动作或存在的状态。
He was here yesterday.
I got up at six thirty yesterday morning.

My father was at work yesterday afternoon.

Did you have a good time last summer?2、表示过去经常或反复发生的动作。

My father often went to work by bus last year.

When I was a child, I often listened to music.. 上传者：916088972