高中英语教学资料（缙云中学）汇编-Reading I u1m3 Grammar.pptVIP

Grammar A.? 表示体力或脑力的能力, “能够， 会” The girl can dance very well. She could dance well when she was young. Can your mother use the computer? Is your mother able to use the computer? Work hard, and you will be able to master English. He couldn’t speak Spanish but was able to get around Spain with the book’s help. may 和 might ： A. 表示许可 “可以” ; 也可以征求对方许可。 ??You may go now. You may keep the book. --May / Might I come in ? -- Yes, you may. ( No, you mustn’t .) B. 表示猜测、判断， “也许” “可能”: 通常只用于肯定句和否定句中。 The guest may /might arrive this afternoon. He may / might not be at the room now. might 多在间接引语中表示过去的可能。 I thought that he might like to work with you. C. 表示祝愿;但语气较正式: May you succeed! May you have a good journey! must 表示“必须”，与 have to 近义，但更主观。 I must learn another language. I have to learn another language. You must be back before 10 o’clock. You have to be back before 10 o’clock. --Must we finish the work at once? --Yes, you must . ( No, you needn’t.) must not 的意思是不许可，表示禁止。 We mustn’t waste our time.  ---- May I take this magazine out? ---- No, you mustn’t. 2. 表示推测，语气非常肯定，“肯定，一定”，用在肯定句。 It must be eleven o’clock now.He must be crazy. 在表示推测的否定或者疑问句中必须用 can, 不可以用 must。 He can’t be at home . I saw him in the classroom just now. will / would： 1. will / would 是助动词或是情态动词 will / would 用于构成将来时是助动词。 When will you go with me? He said you would hold a party this evening. shall shall 构成将来时(只用于第一人称） I shall go there with you tomorrow. 用于第一、三人称的问句中，表示征求对 方的意见。 Shall we put off the meeting until next week? When shall they start the work? Shall he fetch the dictionary for you? What shall I do this evening ? Shall I come in ? May I come in ? should 1. 表示义务、建议、劝告，意为 “应该”。 You sho