过去进行时的句子分享
when/while we were having supper,the light went out.我们正在吃饭时灯熄灭了. i was walking in the street when someone called me.我正在街上走时突然有人喊我. while he was waiting for the bus,he was reading a newspaper.他边等车边看报. he was cleaning his car while i was cooking...