情态动词专项复习导学案.doc

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情态动词专项复习导学案
高三英语备课组 牛洪涛2012-10-14
教学目标：
，尤其是can/could/may/might/must表推测、can’t…too、must表示“偏要…”shall、should以及won’t的用法。
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1. 情态动词can/could
请根据例句归纳情态动词can/could的用法：
⑴
She can drive, but she can’t ride a bicycle.
思考：be able to 和can/could怎么区别：
The fire spread through the hotel very quickly, but everyone was able to get out.
⑵
Can I use your phone?
思考：Could I use your phone? 是否正确？
⑶
Can he be a student?
He can’t be a student.
⑷
Children are generally lovely, but they can be tiring sometimes.
Even experienced teachers can make mistakes.
⑸
He is such a great man that we can not praise him too much.
You can never be too careful.
2. May & might的用法
⑴
May I use your camera?
思考:可否用can/could/Might代替上一句中的may？
⑵
He may be a student.
⑶
Since we have nothing better to do, we may/might as well go for a walk
3. Must的用法
⑴
①---Must I wash the dishes at once?
---Yes, you must.
---No, you needn’t.
② You mustn’t smoke here.
⑵
He must be a student.
⑶
Must you make so much noise while I am working?
If you must know, I’m going to help him look for an apartment.
总结：can/may/must表示“推测”的区别：
⑴ He may be a student, but I am not sure.
⑵ He must be a student, I bet.
4. need & dare的用法
⑴
① You needn’t tell him about it.
② She dare not do s