张 红
1. 构成:am, is , are +现在分词(doing)
2. 用法:
①表示说话时正在进行的动作。例如:
Look! They are playing football.
瞧!他们正在踢足球。
He is writing a letter now.
他现在正在写信。
Is he / she watching TV? Yes, he / she is. ( No, he / she isnt. )
他 / 她正在看电视吗?是的。他/她在看。(不,他 / 她没看。)
What are you doing? Im reading.
你在干什么? 我在读书。
②表示现阶段经常发生的动作,但说话时动作未必发生。例如:
He is writing a novel these days.
这些日子他在写小说。(说话时不一定在写,write 是延续性动词。)
③表示位置移动的动词,如:come, go, leave, arrive, start 等常用进行时态表示一个即将发生的动作,这种现在进行时比较生动,给人一种期待感。这种用法表示将来的时间状语,以区别于表示正在进行的动作。例如:
Im going now.
我这就走了。
They are leaving tomorrow.
他们明天动身。
3.常见的时间状语:
now, these days, at the moment 以及句首由 look, listen等表示引起警觉的动词。
歌诀:
进行时,正进行, be 加“现分”来构成。
be 要随着主语变,am, is, are 灵活用。
此时此刻正发生,动词可用短暂性。
现阶段,正进行,动词须是延续性。
动词若是短暂性,表示“将来”之功能。
否定be后加not,一般疑问be提前。
练兵场:
1. What are you _____(do) now? I _______(eat) bread.
2. Its nine oclock. My father_______(work) in the office.
3. Look, the boy_______(put) the rubbish into the bin.
4. _____he______(clean) the classroom? No, he isnt. He______(play).
5. Where is Mark? He______(run) on the grass.
6. Listen, who _______(sing) in the music room? Oh, Mary_____(sing) there。
7. My parents _______(come) tomorrow.
8. These days John ______(write) a piece of music.
Keys: 1. doing; am eating 2. is working 3. is putting4. Is; cleaning; is playing5. is running6. is singing; is singing7. is coming8. is writing