中考 情态动词

2. 特点

情态动词不能单独做谓语，其后必须加其他动词的原形一起构成谓语 情态动词没有人称和数的变化 在意义上，情态动词具有“多义性”

例：can既可表示能力，又可以表示可能、允许等意义。 3.情态动词的基本句型

肯定句： 主语+情态动词+动词原形+其他 否定句： 主语+情态动词+not+动词原形+其他 疑问句: 情态动词+主语+动词原形+其他？

（2015年南雅月考）Middle school students to use mobile phone at school.

A. should be not allowed B. Should not be allowed C. should not allowed 4.考点归纳-------常见情态动词的用法 can的用法(重点考查)

①表示能力，与be able to同义。但can用于现在时和过去时，而be able to可用于各种时态。如：

He can speak three languages.=He is able to speak three languages. 他会说三种语言。 ②在疑问句表请求，意为“可以”。

注意：在回答表示允许、请求的Could you (please) do...?句型中，若表示同意时，用can回答而不用could。如：

—Could you give us a hand? 你能帮我们一下吗？ —Yes, I can. 是的，我能。

③表示推测，用在疑问句或否定句中，can意为“可能”，can’t则意为“不可能”。如： Can the news be true? 这则消息有可能是真的吗？

Bob can’t be sleeping. The light in his room is still on. 鲍勃不可能在睡觉。他房间的灯还亮着。

【及时巩固】

?(2017 长沙麓山国际实验学校第一次月考， 28)---Could I park here? ??????????----I am afraid you___. Look at the sign “No Parking”. ? A.?couldn’t?????? ?B.?can’t????????????C.?needn’t

?(2016 长沙长郡教育集团联考， 23)----_____ does this T-shirt belong to? ??????????----I’m not sure, but it___ be Lily’s.

? A.?Whose; might not?????? ?B.?Who; cannot???????C.?Who; must not must的用法（重点考查）

①表示义务、命令或要求，意为“必须”（主观意志）。如：

We must do everything step by step. 我们必须脚踏实地做好每件事。 【注意】Must...？句式的否定回答为：No, …needn't / don’t have to。如： —Must I finish the work today? 今天我必须完成这项工作吗？ —No, you needn’t. 不，不必了。 ②表示肯定猜测，意为“一定”。如：

Mary must have some problems. She keeps crying. 玛丽肯定遇到麻烦了，她老是哭。 【注意】在肯定句中must表示对某事有把握的推测；在否定句中的推测用can’t。 【及时巩固】

. —(2014铜仁)Must I water the flowers now, mum?

—No, you________. You _______do it later. A. mustn’t; must B. mustn’t; may C. needn’t; may may的用法

①表示允许、请求，常与第一人称连用。如： May I come in? 我可以进来吗？ ②表示推测，可与maybe互换。如：

She may know the news.=Maybe she knows the news. 或许她知道这则消息。 ③表示祝愿，意为“祝……”。如： May you be happy！ 祝你开心！

注意：May开头的疑问句 表示许可 否定No, . . . mustn’t/can’t. [及时巩固]

1.?(2017 南雅中学第一次模拟， 27)While Goji berries____ get much love from young people in China, they seem to be warmly welcomed overseas. ? A.?must not?????? ?B.?may not ??????C.?should not A. May; Can B. Must; Need C. Could; Must

2. （2016扬州）—Excuse me, may I keep the book a little longer? —Sorry. You ________ return it today. A. must B. mustn’t C. can D. can’t 3. （2014北京）—Must I hand in my homework now, Mr. Smith? —No, you _______. A. can’t B. shouldn’t C. wouldn’t D. needn’t 4. （2014宁波）___you leave now? You only arrived here an hour ago. —Sorry, but so much homework is waiting for me. A. May B. Must C. Can shall与should的用法

①表示征求建议或请求，常用在Shall we /Shall I...?句型中，意为“……好吗？”。如： Shall we put off the sports meeting until next month? 我们将运动会推迟到下个月好吗？ ②should用于各种人称，强调义务或责任。如：

I think children should really learn to respect their elders. 我认为孩子们应该好好学习尊敬长辈。

will与would的用法

①will或would用于第二人称疑问句中，表示征求意见或建议。(would比will更委婉) 如： Will/Would you please take out the trash? 请你把垃圾倒掉好吗？ ②will用于各种人称表示意愿。如：

—Turn off the lights when you leave the classroom. 离开教室的时候要关灯。 —Yes, I will. 好的，我会的。 had better

意为“最好”，没有人称和数的变化，后接动词原形。否定为had better not do sth [及时巩固]

1.（2015南雅入学考试）You’d better? ???in class A. not talk B. don’t talk C. not to talk 2. You had better ________ your hair cut. A. had B. have C. to get

【课后练习】

28. (2017·德州)In some countries, people________ download(下载)music from the Internet without paying, because it's against the law. A. wouldn't B. needn't C. mustn't D. couldn't 29. (2017·温州)— We've ordered too much food. I ________eat any more. —Never mind. Let' take it home. A. can't B. mustn't C. needn't D. shouldn't 30. (2017·河北)I have travelled a lot. I________ speak four languages. A. can B. may C. must D. need 31. (2017·北京)—________I hand in the report today?

— No, you needn't. A. Can B. Must C. Shall D. Could 32. (2017·鄂州)—The tall man with glasses over there looks like our math teacher. —It________ be him. He has gone abroad. A. may not B. mustn't C. can't D. needn't 33. (2017·安徽)—Mum, I've signed for the box. What's in it?

—I'm not sure. It________ be a present from your uncle. A. need B. must C. may D. will 34. (2017·青岛)We should keep quiet in the cinema. We________ speak loudly. A. can B. must C. needn't D. mustn't 35. (2017·大连)—Have you decided where to spend your holiday? —Not yet. We ________ go to Beijing. A. may B. must C. should D. need 36. (2017·武汉)—Have you got the results of the exam?

—No. All we________ do now is to wait. A. must B. can C. may D. could 37. (2017·天津)When you are travelling, bring a map because it________ help you.

A. can't B. mustn't C. used to D. may 38. (2017·广东)To keep children safe, we________ put the things like knives and medicine away in our house. A. may B. should C. can D. might 39. (2017·荆州)—Sixty dollars for such a T-shirt! You________ be joking! —I'm serious. It's made of silk from Hangzhou. A. must B. need C. will D. can

40. (2017·乐山)—________you tell me the differences between these two photos? —No. They look quite similar, nearly the same. A. Can B. May C. Must 41. (2017·重庆)—Robert, could you wash the car for me? —Yes, I________. I'm coming, Dad. A. could C. can

B. couldn't D. can't