第二版 情态动词 can, may, must, need 【热身训练1】 ?. 用can, may, must及其否定形式填空。 Can 1. — _______ your brother speak English very well? — No, he ________. can’t Can 2. — ________ you play tennis? — Yes, I ________. can 语法透视
3. The box is too heavy. Tom _______ move it. can’t 4. — What about seeing a new film
this evening? — I am afraid I _______. I _______ finish can’t must my homework first. 5. It’s nearly 9: 00 pm. We ______ leave must now. 6. — ______ I come in, please? May
— Yes, you may.
7. Little Tom is only three. He ________ can’t read or write, but he ________ sing and
can dance. 8. Look, the red light is on. We ________ must stop at once.
?. 选用mustn’t 和 needn’t 填空。 【词义提示】 mustn’t 不准,不可以,禁止;
needn’t 不必要 通常用于must问句的 否定回答。 1. Time is flying. We ________
waste our mustn’t time. 2. You ________ be afraid of the difficulty. needn’t We’ll give you a hand.
3. — Must I hand in my homework tomorrow? — No, you ________. You may hand it
needn’t in the day after tomorrow. 4. Tom, you ________ read in the mustn’t moonlight. It’s bad for your eyes. 5. You ________ worry so much. I’m sure needn’t he’ll be well soon. 6. You ________ write to me if you don’t needn’t have time.
7. You ________ run. I’m sure you won’t needn’t be late. 8. You ________ forget to call
me when mustn’t you arrive there.
【融会贯通】 情态动词是用于
表
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示说话人的某种情感或 语气的动词,可用来表示请求、允诺、愿望、 命令、能力、需要、拒绝等情感和态度。情 态动词有以下特点:有词义但不完 整;不能单独作谓语,必须和主要动词一 起构成谓语;没有人称和数的变化。
? 肯定句: 主语 + 情态动词 + 主要动词 +其他。 ? 否定句: 主语 + 情态动词 + not + 主要动词+其他。 ? 一般疑问句: 情态动词 + 主语 + 主要动词+其他? 肯定回答:Yes, 主语+情态动词; 否定回答:No, 主语+情态动词与 not 的缩写。 ? 特殊疑问句: 疑问词 + 情态动词 + 主语 +主要动词 + 其他?
常用的情态动词有 can / could表示“能力”; may / might表示“允许”; must表示“不
可推卸的责任”; needn’t表示“没有义务”; will / would表示“预告”; should / ought
to 表示“不可推卸的义务 和责任”。
can, may, must 表推测的用法区别 【热身训练2】 用can, may, must的肯定或否定形
式填空。 1. He ________ be at home, because the must light in his room is on. 2. —
______ it be Tom in the playground? Can — No, it _______ be him. He never wears can’t red clothes. 3. Linda ______ be at the library, but I am may not sure.
【融会贯通】 can, may, must都可以表示“推测”,但用 法有区别,具体如下: ? can表推测时语气比较强,其否定形式 译成“不可能”。一般只用于疑问句或否定 句中。 ? may表推测时语气很弱,表示说话者 没什么把握,不敢确信,所以一般译成 “也许”或“大概”。它可以用于各种句式 中。 ? must表推测时语气很强,表示说话者 很有把握,一般译成“肯定”或“一定”。
Language 操练广场 ?. 用can, can’t, must, mustn’t, needn’t, may 填空。 1. — Must
we go back at once? — No, you ________. needn’t Can 2. _______ you get on well with
your classmates? 3. My son is ill. I ________ take care of him must at home. 4. — Your
shoes are so dirty. ___________ Need / May I wash them for you? can — No, I ______
wash them by myself.
5. Zhang Xiao always gets to school early. She ________ be in the classroom now. must can 6. — What ________ I do for you? — I’d like a cup of tea. 7. We ________ work
hard at all the subjects. must mustn’t 8. You ________ stay up so late. You _______ get
up on time tomorrow. can’t 9. You ________ finish your homework must before dinner, or (否则) you _______ have can’t dinner. 10. —May / Can I come in? ___________ —
Yes, come in, please.
?. 单项填空。从A、B、C、D中选出可以 填入空白处的最佳选项。 1. — Where is