Teacher: Zhou Yufan( 周宇凡 ) Class: Class One, Junior Two Date:

We can use water to wash clothes. We can use water to drink. We can use water to brush teeth. We can use water to……

情态动词 情态动词是一种本身有一定的词义， 可给谓语动词增添情态色彩， 表示说话人对有关行为或事物的态度和看法， 认为其可能、应该或必要等。 情态动词后面加动词原形。

We can use water to wash clothes. = 可以 We use may and may not to ask for and give permission. We also use can and cannot (can’t) for the same reason. [pə’mi ʃ ən] 允许，许可 We may use water to wash clothes.

We can / may use water to drink. We can’t / may not use water to drink. Can / May you use water to drink? Yes, I can / may. No, I can’t / may not.

In the park, she ________ pick the flowers. pick the flowers 摘花

In the park, people _____________ in the pool. can’t / may not swim

In the park, he ________ ____ on the bench.

In the park, he ____ ____.

A: In the park, _______ he ________________ on the floor? B: ____, _____________. He just can throw it into the rubbish bin. throw the rubbish

A: In the park, Can / May I……? B: No,…….

He can ride a bicycle.

= 能够（有能力做某事） We use can and cannot (can’t) to say we are able or not able to do things. He can ride a bicycle. He is able to ride a bicycle.

He can / is able to ride a bicycle. He can’t / isn’t able to ride a bicycle. Can he ride a bicycle? Is he able to ride a bicycle? Yes, he can / is. No, he can’t / isn’t.

I can swim, dance, play football and speak two languages. I can’t cook, play the guitar or ride a bicycle. I can ski, dance, play chess and speak three languages. I can’t type, paint pictures or drive a car. I can ski, dance, play chess and speak three languages. I can’t type, paint pictures or drive a car.

A: Can you dance? B: No, I can’t. But I can sing. A: Are you able to dance? B: No, I’m not. But I am able to sing.

A: Can you……? B: No, I can’t. But I…….

A: Can you ___________? B: No, I can’t. But I ___ ________.

A: Can you ________? B: No, I can’t. But I ___ _______.

A: Can you _____? B: No, I can’t. But I ___ ____.

a traffic sign 交通标志 You must stop!

必须 We use must and must not (mustn’t) to tell people what to do or what not to do. You must stop!

You must stop! 你必须停止 You needn’t stop! 你不需要停止 You mustn’t stop! 不准你停止 当 must 表示 “ 必须 ” 时，其否定形式通常 为 needn’t 或 don’t have to. 而 must not (mustn’t) 通常用来表示说话人不许 或禁止某人做某事。

― Must you stop ？你必须停止吗 ? ―Yes, I must. / No, I mustn’t. 是的，我必须停止 / 不，我决不能停止。 ― Must I take my umbrella? 我必须要带伞吗？ ―Yes, you must. / No, you needn’t. 是的，你必须带 / 不，你没必要带 。 由 must 引导的一般疑问句，其否定回答因回 答者语气的差异而不同。当回答者语气强烈， 强调禁止做某事时，其否定回答一般为 “mustn’t”, 反之，则常用 “needn’t” 。

You mustn’t turn left!

You must turn right!

You mustn’t ride the bicycle!

You mustn’t drive the car!

P = park 停车 A: Must I _______ here? B: ____________.

A: Must I drive straight? ( 向前一直行驶 ) B: ___________. You also can turn left here

Zoo A: What can we do in a zoo? B: We can __________. A: Do you know what we mustn’t do here? B: We mustn’t give ___ to animals by ourselves.

A: What can we do in……? B: We can……here. A: Do you know what we mustn’t do here? B: We mustn’t……. a gas station 加油站 library 图书馆

A: What can we do in the gas station? B: We can buy ________for the cars. A: Do you know what we mustn’t do here? B: We mustn’t ______.

A: What can we do in the library? B: We _________________here. A: Do you know what we mustn’t do here? B: We________________.

A: What can we do in the classroom? B: We can have different lessons here. A: Do you know what we mustn’t do here? B: We mustn’t eat snacks, fight with classmates, damage the desks, and so on.

1. A ： _________ basketball? (play) B ： No, I can’t. 2. A ： _________your book today? (borrow) B ： No, you may not. 3. A: ___________ Japanese? (you/speak) B : Yes, I can, but I __________ it well. 4. A: _________TV today ? (I/watch) B: Yes, you may, but you ________ it tomorrow. 5. A: ____________ the violin? (play) B: No, I’m not, but I ____________ the piano.

6. A ： Must he keep quiet in the library? B ： Yes, ________. 7. A ： Must they leave here now? B ： No, _________. They can leave later. 8. A ： Must I take all the medicine? B ： No.________. You must only take a little.

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