1. We were having supper when the phone rang. 我们正在吃晚饭时，电话响了。
2. This time yesterday Jack was not watching TV. 昨天这个时候杰克没看电视。
3. He was repairing his bike. 他在修理自行车。
4. When/While we were having supper, the light went out. 我们正在吃饭时，灯熄灭了。
5. While we were talking, the teacher came in. 当我们正在谈话时，老师进来了。
6. While he was waiting for the bus, he was reading a newspaper. 他边等车边看报。
7. He was cleaning his car while I was cooking. 他擦车时，我正在做饭。
8. Tom was getting up at six o’clock every day that week. 汤姆那一周里每天都是六点钟起床。
9. I took part in a dancing party yesterday. 我昨天参加了一个舞会。
10. His brother phoned me yesterday. 他的哥哥昨天打电话给我。
11. I have been to America last year. 我去年到美国去了。
12. I met your sister last night. 昨夜我遇到你姐姐。