示:

　　动词形式

　　各种形式 情态动词 实义动词

　　肯定句 You need to be careful.

　　否定句You needn’t to be so worried.You don’t need to be so worried.

　　肯定疑问式Need I say my telephone number again?Do I need to say my telephone nunber again?

　　否定疑问式

　　Needn’t he come again? Need he not come again?Doesn’t he need to come again? Does he not need to come again?

　　练习：

　　用情态动词can, can’t, may, must, mustn’t , needn’t, could 填空。

　　1. --- _____ you come and play with us now?

　　--- I’m afraid I _____. I _____ do the cooking. I ____ come later.

　　2. --- _____ we clean the windows today?

　　--- No, you _______. You ____ clean them tomorrow.

　　3. --- ____ I watch TV this evening, mum?

　　--- No, you _______. Work _____ come first.

　　4. --- ____ I come in, please? ----Yes, please.

　　5. Excuse me. ____ you tell me the way to the cinema?

　　单项选择题：

　　1.---Mr. Li, may I go home now?

　　----No, you _____.you should sweep the floor first.

　　A. can’t B. must C. needn’t D. can

　　2.Here’s the massage from the head teacher ：If you _____finish the work today, you _____attend party tomorrow.

　　A. don’t;won’t B. can’t; shan’t C. won’t; can’t D. can’t; won’t