情态动词的语法特征1情态动词有一定的意义,表示或暗示某

情态动词的语法特征1情态动词有一定的意义,表示或暗示某内容摘要：

end but you must e back before 11 at night. • Must I hand in the exercise today? • No, you needn’t. • 注意与 have to 的 区别。 • must 和 have to • Must用于一般问句中 ,肯定回答用 must否定式用 needn’t或 don’t have to，做 “不必” , mustn’t表示“禁止，不允许” — Must I finish all assignments at a time? — Yes, you must. No, you needn39。 t. You mustn’t get down while the car is still moving. • “必须”这个意思时， must 和have to 稍有区别。 must着重说明主观看法，have to 强调客观需要。 另外， have to 能用于更多时态。 • I don’t like this TV set. We must buy a new one. • There was no more bus. They had to walk home. • 3） 表示猜测，语气非常肯定，近乎确定 的意味，一般用于肯定句，意为肯定 ……。 其否定为 can’t，意为不可能 …... • You must be ill. I can see it from your face. • He can’t be at home. I saw him in the classroom just now. • 4) Must表示“偏要，硬要”，指做令人不快的事情 • He must e and worry her with question, just when she was busy cooking the dinner. Of course， after I gave her my advice， she must go and do the opposite。 2. A: ______ Xiao Feng find the origin of Easter from that book? B: No, he _____________. 1. A: ______ you like to go to a special event with us on Saturday? B: Yes, I _____________________ _________. Would ’d like to go with you on Saturday Could couldn’t find it Exercise 3. A: _____ I go with my friend to the harvest festival? B: Yes, you _________________ ________. 4. A: If I want to be a doctor _______ I study science? B: Yes, you __________________. should study science May may go (with your should friends) 5. A: He is very handsome. ____ he play the role of the prince? B: No, he _______________________ ______. can’t play the ro。