过去进行时表示过去某一点时间正在进行的'动作或者过去某一段时间内一直进行的动作。
1. 构成
was /were + doing，例如：
I was watching TV at 9 oclock last night.
at 9 oclock last night是时间点
They were playing football all afternoon.
all afternoon是时间段
2. 过去进行时的标志词
at 8 oclock last night, this time yesterday等。例如：
I was having lunch at home this time yesterday.
昨天的这个时候我正在吃午饭。
At that time she was writing a book.
那阵子她在写一本书。(表示她在那段时间里一直在做那件事情。)
★★练一练★★
用括号中所给动词的适当形式填空。
1. This time yesterday I ____ ______(read)books.
2. At 9 oclock last Sunday they ______ ______(have)a party.
3. When I _____(come)into the classroom, she ________ ______(read)a storybook.
4. She _____ ______(play)computer games while her mother ____ ______(cook)yesterday afternoon.
5. I _____ ______(have)a shower when you _______(call)me yesterday.
学识谷
