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。
She isn’t reading now.
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。
When he knocked at the door, we weren’t doing our homework.
当他敲门时,我们没有在写作业。
Were you cooking at that time?
那时,你在做饭吗?
现在进行时的用法: 其结构是助动词be的过去形式is/are/am +v-ing.
其句式变化仍然要在be上做文章。
现在(说话的瞬间)正在进行或发生的动作,强调“此时此刻”。E.g. He is reading . They are talking now.
2、当前一段时间内的活动或现阶段正在进行的动作。E.g. They are working these days.
3、某些动词的现在进行时,表预定的计划或即将发生的动作。E.g I am coming.
其结构为be+现在分词. 现在分词的变法有
1、一般在动词词尾加上-ing ,E.g. jump
2、以不发音字母e结尾的动词,先去e,再加-ing. E.g have write
3、.以重读闭音节末尾只有一个辅音字母结尾的词,它前面是单个元音字母时要先将词尾的辅音字母双写,再加上-ing. E.g. sit put
其句式变换都在be上做文章。
E.g. He is buying a bike.
Is he buying a bike?
He isn’t buying a bike.
一般由look,listen,now, at this moment等时间状语做标志。
4. 习惯进行:表示长期的或重复性的动作,说话时动作未必正在进行。
Mr. Green is writing another novel.
(说话时并未在写,只处于写作的状态。)
She is learning piano under Mr. Smith.
5. 表示渐变的动词有:get, grow, become, turn, run, go, begin等。
The leaves are turning red.
It’s getting warmer and warmer.
6.与always, constantly, forever 等词连用,表示反复发生的动作或持续存在的状态,往往带有说话人的主观色彩。
You are always changing your mind.
典型例题
My dictionary ___, I have looked for it everywhere but still___ it.
A. has lost, don’t find B. is missing, don’t findC. has lost, haven’t found D. is missing, haven’t found.
答案D. 前句是一个仍在持续的状态,应用进行时,由于没有找到,其影响仍然存在,应用完成时,瞬间动词用于否定式时可用于完成时。