情态动词student.doc

情态动词teacher Ⅰ． can， couldThe child can speak English well. （ ） I could swim when I was only six. （ ） 2. You can have the book when I have finished it. （ ） Can I borrow your book? （ ） --- Yes, you can. / ---No, you can’t. （ ） 3. Could you show me how to pronounce the word? （ ） --- Yes, you can. / ---No, you can’t. （ ） 4. There is someone knocking at the door. Who can it be? ( ) The streets are all dry. It can’t have rained during the night. ( ) 5．I could have studied hard, but I didn’t . 归纳与总结： 1. _________________________________________________________ 2. _________________________________________________________ 3. _________________________________________________________ 4. __________________________________________________________ 5．__________________________________________________________ ② can，be able to的区别（1）can表示主观能力，be able to表示客观能力。 I swim, but I _____________ to swim now because there is not any river here. 我会游泳，但由于这里没有河，我不能游泳。 （2）can只有现在式和过去式，而 be able to可用于各种时态。 （3）be? able to可用于动词不定式和动名词结构中，can不能。??? I would like to be able to learn, but I’m too old. The patient regrets not being able to take the doctor’s advice. ??? （4）be able to可和情态动词连用，can不能。??? When one learns a foreign language, one muat be able to use the foreign language, forgetting all about his own. Ⅱ．may，mightPeople may not pick flowers in this park. （　　　　　　　　　　） She said that he might take her dictionary. （　　　　　　　　　　　） May I come in? ---Yes, you may. / ---No, you mustn’t. （　　　　　　　　　　） 2. She may be waiging for you in the entrace hall. （　　　　　　　　　　　　） You may go and ask him, but he may not answer you. I’ve got a lot of books that might interest you. 3. You may have read some account of the matter. （　　　　　　　　　　　　） 归纳与总结： １．_______________________________________