情态动词

(共8张PPT)
Just for Fun!
Pleasant Goat and Big Big Wolf
I can ride a motorbike.
I can drive a plane.
I can play the drum.
I could play the drum when I was at the age of 3.
I could ride a motorbike when I was 4 years old.
I could drive a plane when I was …
有什么了不起！
Listen up, boys and girls! Before we can enjoy ourselves on the Great Wall, here are a few rules and suggestions for you.
First, you must keep to the path. You mustn’t walk along the edge because you could fall and hurt yourselves. Second, you have to keep together. You mustn’t go off on your own, because you might get lost. Third, you need take some water and food with you. You shouldn’t drink all the water at a time, because you may need some later. Finally, you have to think about personal safety.
Can you go rock climbing（攀岩） Yes, you can, but you must use ropes and have right shoes.
That’s all! Wish you a good trip.
能
必须
不准
可能
不准
可能
需要
不应该
可能
可以
可以
必须
I could ride a motorbike when I was 4 years old.
肯定推测（100%有把握）:
否定推测（0%可能性）：
可能推测（20%-80%可能性）：
must “一定”
can’t “不可能”
may / might / could “可能”
情态动词表推测
It must be a rabbit.
It must be a dinosaur.
It may/might/could be a lion.
Can it be a lion “可能”（用于疑问句）
猜 Guessing Games
It can’t be true. You must be telling a lie.
1. (2009江苏无锡）---It must be John who is in the office.
---I’m sure it be John.
A. won’t B. mustn’t C. D. needn’t
C
2. ---What will the weather be like tomorrow
---It be rainy, cloudy or sunny.
A. B. must C. shall D. should
3. --- Who it be ---It may be Lucy’s twin sister. They look like each other. A. B. may C. must D. should
A
A
Who knows
I saw him off at the railway station just twenty minutes ago.
might
可能
can
可能（用于疑问句）
链接中考
不可能
can’t
Describe the signs.
You mustn’t/can’t smoke here.
Don’t smoke. /No smoking. / Smoking is not allowed here.
You mustn’t/can’t swim here.
Swimming is not allowed here.
You mustn’t/can’t jump down.
Don’t jump down.
You mustn’t/can’t turn left.
You mustn’t/ can’t use mobile phones here.
Mobile phones aren’t allowed here.
You can’t/mustn’t take photos.
No photos. / Don’t take photos. / Taking photos isn’t allowed here.
You can’t / mustn’t park here.
No parking.
You must keep quiet.
It can be recycled.
You must go straight.
“可以”
“必须”
“不可以”
“严禁，不准”
Customs in China must mustn’t/can’t
1. Open a present when you receive it.
2. Use both hands when you accept a present.
3. Wrap (v.包） hongbao in red paper.
4. Wrap hongbao in white, blue or black.
5. Do cleaning on the first day of the Chinese New Year.
6. Cut your hair at Spring Festival.
7. Break something at Spring Festival.
8. Eat lots of dumplings at Spring Festival.
Task 4 Check what you must and mustn’t / can’t do in China.