无敌英语语法(初级版)-第9章 1进行时的肯定句
分类: 英语学习方法
进行时的构成是:主语+be动词+现在分词~.
(现在分词的构成详见第六章)
1 现在进行时
I am watching TV now.
我正在看电视。
句型:主语+be(am,is,are)+现在分词~.
Look!Nancy is doing her homework
看!南希正在做作业。
They are cleaning their classroom.
他们正在打扫他们的教室。
2 过去进行时
He was walking in the park at that time yesterday
昨天那个时候,他正在公园散步。
句型:主语+be(was,were)+现在分词~.
I was watching TV then.
那时,我正在看电视。
When I came home, they were cooking in the kitchen.
当我进家时,他们正在厨房里做饭。