第3讲 情态动词讲练（50题） -【暑假自学课】2023年新八年级英语暑假精品课（牛津上海版）

第3讲 情态动词 掌握情态动词的用法 【知识梳理一】 can/may/must的用法 情态动词 用法 例句 can/could =be able to do can’t/couldn’t表示否定猜测 The story cannot be true. She can’t make a mistake. could也可用于现在时，表示婉转语气。 —Could I use your bicycle? —Yes, of course, you can. may/might 表示肯定猜测, “可能，也许” He may/might be at home. must/have to “must” 表示肯定猜测, “一定”; The light in his room is still on. He must be at home. “have to” 译为“不得不” You’ll have to go there at once. mustn’t “禁止、不准” Cars must not be parked here. 【知识梳理二】need用法 ( 1. 肯定形式： need do sth. need to do; need sth. Plant needs water. We need to work harder. ) ( 2 . 否定形式：needn ’ t do; don ’ t need to do; don ’ t need sth. You needn’t get up so early because it is Sunday today. = You don ’ t need to get up so early because it is Sunday today. I don ’ t need much bread as I have had enough ) 【知识梳理三】should/ought to/used to用法 情态动词 用法 例句 will/would “Will/Would like to do…”; “Will/Would you please do…” "Will you pass me the sauce, please? I said I would support them. ( = I said, “I will support them. ”) should/ought to 表示“不可推卸的义务或责任” Every student should obey the school rules. He ought not (oughtn’t) to drink too much. 表示劝告或建议时, ≈had better We ought to start at once. =We had better start at once. We shouldn’t eat too much fried food. =We’d better not eat too much fried food. used to used to do They used to live in the countryside. He used not to drive a car. He didn’t use to drink. be/get used to (doing) sth. I’m not used to getting up early. You’ll soon get used to Chinese food. be used to do Trees are used to produce paper. be used for doing Fur is used to make coats. can/may/must的用法 【例题精讲】 Choose the best answer. 1. -- _________ I change the bulb now? -- No. You _________ switch off the electricity first. A. Must, may B. May, must C. Can, may D. Must, need 2. --- ____________ we finish the work today? --- No, you needn't. A. Can B. May C.