《Natural disasters》GrammarPPT课件
第一部分内容：新课导入
What were you doing when the teacher came into the classroom just now?
do homework
clean the desk
talk with my desk mate
prepare for the next lesson
look for the book
read English books
have breakfast
... ... ...
《Natural disasters》PPT，第二部分内容：when
I was doing homework
I was cleaning the desk
I was talking with my deskmate
I was preparing for the next lesson
I was looking for the book
I was having breakfast
What was A doing while B was doing sth?
…was running while …was walking.
…was playing basketball while …was playing football.
…was reading books while …was playing computer games.
…was singing while …was doing his homework
when while 的区别
My mother was watching TV while I was doing my homework.
He was taking a shower while his wife was talking on the phone.
while引导的时间状语从句，谓语动词只能是延续性的，通常用进行时。
The teacher came in ____ students were talking noisily.
=The students were talking noisily ___ the teacher came in.
... ... ...
《Natural disasters》PPT，第三部分内容：巩固练习
1.My wallet dropped on the ground ______ I was running.
2. ______ I was falling asleep, there was a loud knock on the door.
3. ______ he was reading, an earthquake started.
4. Were the students listening to the teacher carefully ______ the teacher was giving a lesson?
5. ________the telephone rang, I became nervous.
... ... ...
《Natural disasters》PPT，第四部分内容：练习
1. I _________ my homework when Mike _____ last night.
昨天晚上迈克来的时候我正在写作业。
2. While Ann ____________TV, her father ___ home.
安正在看电视时，她父亲回来了。
3. What were you doing when I ________ at the door?
我敲门的时候你在干什么？
4. She ______________the room when I ____ to see her.
我去看她的时候她不是在打扫房间。
5. I _____________my vocation England this time last summer.
去年夏天的这个时候我正在英国度假。
... ... ...
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