过去时的标志词语:yesterday,last,ago,before,in+年或月,on+日,just now(或者a moment ago)。再加上was+v-ing,就可以判断这个句子是过去进行时了。
were/was doing sth.这是核心,指当时正在干什么.时间标志then,at that time等等。
1、was+动词ing,例如:I was watching TV(我过去正在看电视)。
2、were+动词ing,例如:They were playing football.(他们过去正在踢足球)。
表示在过去某一时刻或某一段时间内进行或发生的动作。其形式为was/were+V-ing.常与表示过去的时间状语连用,如:last night、last Saturday等;或者与when、while、as引导的过去连用。
1、I called you yesterday afternoon but there was no answer.
昨天下午我打电话给你,但是没有人接电话。
2、I was visiting a friend of mine most of the afternoon.
我昨天下午大部分时间,都在一个朋友家里。
3、It was raining hard when I left my office.
当我离开办公室时,雨下得正大。
4、When you called,I was eating.
你打电话时,我正在吃饭。
5、When I was cleaning the windows,my brother was sweeping the floor.
我在擦窗户的时候,我弟弟在拖地。