资源简介

(共11张PPT)
情态动词
should和could的用法
汇报人：拾 壹
should
应该、可以
肯定式：
should +动词原形
否定式：
should not （shouldn’t） +动词原形
You should stop and have a rest.
You shouldn’t stop and have a rest.
Should I stop and have a rest
一般疑问句：
肯定回答：
Yes, you should.
否定回答：
No, you shouldn’t
should的用法：
表示义务：
You should study hard and get good grades at school.
表示可能性：
Mary should be at home at this time.
表示向别人提出建议
Mary, you should see a doctor if you feel ill.
表示惊讶
Why should you stand there like a fool
could
应该、可以
肯定式：
could +动词原形
否定式：
could not (couldn’t） +动词原形
I could speak English since I was 10.
I couldn’t leave him alone at home.
Could you speak English
一般疑问句：
肯定回答：
Yes, I could.
否定回答：
No, I couldn’t.
could的用法：
表示能力（can的过去式）：
I could speak English since I was 10.
表示请求、询问，语气委婉
Could I sit here
表示建议，比can语气更委婉
Maybe you could stay at home and have a rest.
巩固练习：
--- Excuse me. Can you tell me what time it is now
--- Sorry, I ______. My watch doesn’t work.
A. can’t B. shouldn’t C. mustn’t D. could
2. Jenny finally got the job because she _______ speak English.
A. might B. must C. could D. should
3. --- Dick, _____ I use your e-dictionary
--- Yes, sure. ______ you give it to David after you use it
A. will; Would B. may; Might C. can; Could D. shall; Should
巩固练习：
4. As the saying goes, the moon ______ always be full.
A. can’t B. shouldn’t C. mustn’t D. needn’t
5. --- Could I invite my friends to a party
--- Yes, of course you ______
A. can B. could C. must D. should
6. If you wish, you _____ come in and have a cup of coffee.
A. may B. must C. would D. should
巩固练习：
7. --- What about going swimming this afternoon
--- You ____ be joking! Don’t you know I’m afraid of water.
A. may B. can C. must D. should
8. --- Can I go fishing with you , dad
--- No, you ______. You ______ stay a home and do your homework first.
A. won’t; may B. can’t ; must C. shouldn’t; ought D. needn’t; should
9. The green dictionary ____ belong to_____ . Her name is on it.
A. may; Carla’s B. must; Carla C. can’t; Carla D. must; Carla’s
巩固练习：
10. --- I can’t stop smoking, doctor.
--- For you health, I’m afraid you ______.
A. could B. couldn’t C. must D. mustn’t
11. --- Mom. the train is leaving in eight minutes. I ____go now.
----Okay, Jim, call me when you get there.
A. may B. must C. can D. should
12. --- ______ I have lunch, Mom
--- No. You____ wash your hands first.
A. Would; could B. May; must C. Ought to; should D. Could; may
巩固练习：
13. You are a student. So you should know what you should do and what you _____ do in class.
A. should B. could C. shouldn’t D. couldn’t
Thank you!

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