【考点4】过去进行时的用法考查
过去进行时主要有以下用法： 1、谈论过去的某个时刻或某段时间正在进行的事。例如：I was reading the newspaper at 6.30 this morning. 2、当过去某一件事情发生时，另外一个动作正在进行。此时，延续性动词用过去进行时，瞬间动词用一般过去时。例如：The earthquake started while I was doing some shopping. 3、可以表示从过去某个时候看来将要发生的事。例如：When his son arrived, the old man was dying.
【中考链接】
1. -- I came to your home yesterday afternoon, but nobody was in.
-- Oh, we_______ some shopping in the supermarket.（2007年南通）
A. have done B. did C. were doing D. are doing
简析：C。根据对话，可知在对方到他们家时，他们当时正在超市购物。
2. --What do you think of the colour of my new dress?
--Sorry, but what did you say? I_________ about something else. （2007年扬州）
A. think B. thought C. am thinking D. was thinking
简析：D。第二个说话者没有听见对方说什么，可知对方说话时，此人正在考虑别的事情。过去进行时表示一个动作发生时，另外一个动作正在进行。
3. I my homework while my parents TV last night.（2006年南京）
A. did; have watched B. was doing; were watching
C. had done; were watching D. would do; were watching
简析：B。做作业和看电视均为延续性动词，而且是在过去同时进行的两个动作，所以都用过去进行时。