1、What was she doing at nine o"clock yesterday?昨天晚上九点她在做什么?(介词短语表示时间点)
2、They were swimming in the swimming pool this time last week.上个星期的这个时候他们正在游泳池游泳.
3、What was he researching all day last Sunday?上周日他一整天都在研究什么?
4、It was raining when they left the station他们离开车站的时候天正在下雨
5、When I got to the top of the mountain,the sun was shining当我到达山顶的时候,阳光灿烂
6、My parents were watching TV at 8:00 last night.昨晚八点钟时我的父母亲都在看电视.
7、I was walking in the street when someone called me.我正在街上走时突然有人喊我.
8、My brother fell while he was riding his bicycle and hurt himself我哥哥骑自行车的时候从车上摔下来,受伤了
9、John was always coming to school late.约翰上学总是迟到.
10、I was leaving for Wuhan that day.那天我正要去武汉.
11、While he was waiting for the bus,he was reading a newspaper.他边等车边看报.
12、While he was waiting for the bus,he was reading a newspaper他边等车边看报、(两个动作都是延续的)
13、When/While we were having supper,the light went out.我们正在吃饭时灯熄灭了.