新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

情态动词can, may, must的用法

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

Modal verbs 情态动词 情态动词后接动词原形; 没有人称和数的变化; 不能单独作谓语, 与后面的动词共同作谓语;

其否定形式在后面直接加not。

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

Modal verbs 情态动词 can / can not

may / may not must / must not

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

can / can not1. 表示能力(会)

Mary can speak English, but she can notspeak French.

2. 表示允许(可以)Can I use your dictionary? I can’t find mine. 3. 表示推测 (可能 ) ----通常用于否定形式 He can’t be in the office. I saw him go out just now.

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

1. S1 Can Kitty spell ___ ____? S2 Yes, she can _____________. 2. S1 Can Kitty add ____ ____? S2 _____________. No, she can’t

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

3. S1 ____ Derek subtract ________? Can S2 _____________. Yes, he can

4. S1 ____ Kitty multiply _______? Can S2 _____________. No, she can’t

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

may / may notmay的用法: 1. 表示允许(可以) May I come in? 2. 表示推测 (可能) ----通常用于肯定形式

She may be still waiting for us.3. 表示祝愿 May you have a happy weekend.

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

may / maymay 的用法:●以may开头的疑问句，其否定回

答用can’t或 mustn’t。--May I go home now?

--Yes, you may.No, you can’t.

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

1. May I carry your bag for you? 2. May I open the door? 3. May I get you a chair?

4. May I switch on the TV?5. May I borrow your new bicycle?

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

must / must notmust的用法: 1. must表示必须

You must do your homework first.2. must表示 一定(肯定性推测 )

He must be at home.

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

must / must notmust not的用法: 1. mustn’t表示禁止(不准；不允许) You mustn’t smoke here. 2. 以must开头的疑问句，其否定回答 要用needn’t. -- Must I clean the classroom now? -- Yes, you must. No, you needn’t.

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

What do the signs mean? Do you know?

You must not cycle.

You must not enter.

You must be careful.

You must turn left.

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

You must pay ten yuan. You must keep silent.

You must not smoke. You must not turn right.

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

Ⅰ.用适当的情态动词填空：。

1.I can play football. __________you swim? Canmay 2.Don’t worry. You ________ return me this book tomorrow. can’t 3.My grandma is ill. You _______ talk so loudly here . must 4.I can’t play with you. I __________finish my homework first. must 5.I__________ get up early tomorrow. because I have a meeting. Can 6.______________you please open the window?

新版 八年级上册仁爱英语 Unit2 topic 2 情态动词can__may__must的用法

9. Nobody ___________live without air. can 10._________he speak Chinese ?Yes ,a little. Can 11. The book _________ be returned before Saturday. must 12.__________I come in ?Yes ,please. May 13. You ________give up smoking at once. It’s bad must for your health. May 14. Excuse me ._________I ask you a question? 15. __________you tell me where the station is ? Can 16. Must I finish the work now ?No, you _________. _______ needn’t You _______ do it this evening. can can’t 17. May I use your dictionary ? Sorry , you _________. I am using it now . must 18. Look at the ground .It’s very wet .It _

______ have rained last night.