Newspapers课件3.ppt

情态动词 3. 可能 can be/ can’t be 表“猜测” 用于疑问句或否定句之中. a. --- Can the story be true ? ---No, it can’t be . b. He can’t be at home now , is he? ---May I take photos here? ---Yes, you may . / can ---No, you mustn’t. I may be a teacher when I grow up . = Maybe I will be a teacher when I grow up . 4. 表示需要 need (1) need 作行为动词 这时 need 就象其他动词一样,有第三人称单数needs, 也有过去式 needed 1. need to do sth　 He needs to buy a pair of shoes. Does he need to buy a pair of shoes? He doesn’t need to buy a pair of shoes. What does he need to buy? exercise: They needed our help.　 2. need sth to do sth I need a bike to go to school. 3. need sth She needs a lot of money. She doesn’t need a lot of money 4 sth. need doing = sth need to be done My hair needs washing. My hair needs to be washed. You needn’t return the book now. Need he go yesterday? ---Yes, he must./ No, he needn’t. 5. 表示责任 should, ought to (应该) ---Ought you to obey the rules? ---Yes, you ought to. --- No, you ought not to. I would like to do sth =I’d like to do sth I would not like to do sth I would rather do sth =I’d rather do sth I’d rather not do sth 3.---_____I stop here, sir? --- No, Go on to the next paragraph, please. A. Will B. May C. Could D. Ought 4.Our teachers are at work. You _____make so much noise A. mustn’t B. doesn’t C. needn’t D. isn’t 7. ---Must I write down these words now? ---No, you ______ A. needn’t B. mustn’t C. may not D. can’t 8.Some warm-hearted animals ___hibernate (冬眠) A. needn’t B. does not need to C. needn’t to D. don’t need 11. ---I can’t find Tom anywhere in the office. --- Where _____he have gone? A. must B. can C. should D. need 12 . We ____die without air or water A. will B. shall C. should D. would 16.Parents must take good care of their children, _____they? A. mustn’t