中考复习语法专项-情态动词(共32张PPT).ppt

4. —Honey, how are you feeling now? —I am much better, Mum. So you____　　　　take me to see the doctor. A. can’t B. mustn’t C. needn’t D. couldn’t 【解析】选C。考查情态动词用法。由答语中的前句“我好多了, 妈妈。”推知后句为“所以你没必要带我去看医生。”needn’t没必要。故选C。 情态动词 用法 例句 may 表示请求、许可，意为“可以”，也可表示祝福和愿望 May I have a look?我可以看看吗？ May you be happy!祝您幸福！ 有可能，也许（20％-80%的可能 性），用于肯定句 Jim may be sleeping now. 吉姆现在可能在睡觉。 may not 表示否定推测，语气不确定，意为“可能不” It may not be my pen. 这可能不是我的钢笔。 might may的过去式,表示请求、许可，语气比may更委婉 Might I smoke here? 我可以在这里吸烟吗？ 注： maybe may be maybe 用于句首表示“可能; 也许”, 相当于perhaps may be 其中may是情态动词, 后接动词原形be, 表示“可能是”, 在句中作谓语。两者可互换。 Maybe the boy is from Canada. =The boy may be from Canada. 那个男孩可能来自加拿大。 1. —______ I use your dictionary? —Of course. But please return it to me before you leave. A. Must B. Need C. May ②He may know the way to the post office. I am not sure. 他可能知道去邮局的路。但我不确定。 ③ The notebook must be Li Ming’s. His name is on the first page. 这笔记本一定是李明的。他的名字在第一页。 专练：请用can’t, might, may, must填空。 （1）The man in the office ________ be Mr. Lin. He has gone to Canada and won’t be back until next month. （2）Though he is a newcomer, he __________ know the road to the library because he likes reading. （3）—Do you know the woman who is talking with our father? 　 —I have no idea. My mother has short hair, but the woman has long hair, so the woman ___________ be my mother. （4）The iPhone X __________ be Alice’s. In our class only she has an iPhone X. can’t may / might can’t must must may/might/could can’t 拓展 1.He must be washing the clothes. 2.There could be a girl crying. 3.Somebody must have stolen the ring . 4.They might have left China. ★★★★ 情态动词 表示说话人对某一动作或状态的态度, 认为 “可能”, “应该”, “必须”等 1.情态动词的特征 (1)本身有一定词义，但不能单独做谓语，必须和实义动词连用，构成谓语。 He can swim. We shouldnt laugh at others. (2)无人称和数的变化 (3)后接动词原形 (4)具有助动词的作用，可用来构成否定句、疑问句及用于简明答语。 *常见的情态动词有shall, should, will, would, can, could, may, might, need, must, may 等 情态动词 用法 例