情态动词综合-2025-2026学年九年级英语全一册语法重难点精讲（鲁教版五四制）

9下鲁教版（五四制） 【寒假专版】 D版重难点精讲 寒假专版 【语法专题】情态动词综合专项突破 初中鲁教版（五四制）9年级 语法精讲 语法概述：情态动词(can,may,must,should,.need等)=表示说话人的语气或态度（如能力、许 可、义务、推测等)，在句中不能单独作谓语，需与动词原形一起构成谓语。 一、 重难点讲解 重难点一：情态动词can may must的基本用法区别讲解： can表示能力或许可，意为”能会可以”，否定形式为can't。 I can speak English.(能力) You can go home now.(许可) may表示许可或可能性，意为”可以可能”，否定形式为may not。 May I borrow your pen?(许可) It may rain tomorrow.(可能性) must表示必须或肯定推测，意为”必须一定”，否定形式为mustn't(禁止)。 You must finish your homework first.(必须) He must be at home.(肯定推测) 真题再现： 1.(2024·山东济南期中鲁教版)一I use your dictionary?一Sure,here you are. A.Can B.Must C.Should D.Need 答案：A解析：根据语境表示请求许可，用Can合适。 2.(2023·山东青岛月考鲁教版)You_play football in the street.It's dangerous.. A.may not B.mustn't C.needn't 9下鲁教版（五四制） 【寒假专版】 D版重难点精讲 D.can't 答案：B解析：根据语境表示禁止在街上踢足球，用mustn't。 重难点二：情态动词need和dare的用法讲解： need作情态动词时表示'需要必须”，主要用于否定句和疑问句，否定形式为needn't。 You needn't come so early..(否定句) Need I hand in my homework today?(疑问句) dare作情态动词时表示”敢'，主要用于否定句和疑问句，否定形式为daren't。 She daren't go out alone at night..（否定句) Dare he speak in public?(疑间句) 真题再现： 1.(2024·山东烟台期中鲁教版)Must I finish the work now?一No you__.You can do it tomorrow. A.mustn't B.needn't C.can't D.shouldn't 答案：B解析：Must引导的一般疑问句否定回答用needn't,表示不必。 2.(2023·山东威海月考鲁教版)She_to go out alone when she was young. A.dare not B.doesn't dare C.daren't D.didn't dare 答案：D解析：根据时间状语when she was young可知用一般过去时，dare作实义动词时 否定形式借助助动词didn't。 重难点三：情态动词表推测的用法讲解： 肯定推测：must用于肯定句表示，一定”，may/might用于肯定句表示'可能”，night可能性比may 小。 He must be in the classroom now.(must表肯定推测) She may come to the party tonight.(may表可能推测) 否定推测：can't用于否定句表示’不可能”，may not表示”可能不”。 That can't be true.(can't表否定推测) He may not like this book.(nay not表可能不) 真题再现： 9下鲁教版（五四制） 【寒假专版】 D版重难点精讲 1.(2024·山东淄博期末鲁教版)The light is on in his room.He_be at home, A.must B.can C.may D.might 答案：A解析：根据灯亮着这一迹象，表肯定推测他一定在家，用ust。 2.(2023·山东临沂期中鲁教版)-Who is knocking at the door'?一It_be Tom.He has gone to Beijing. A.can't B.mustn't C.may not D.needn't 答案：A解析：根据He has gone to Beijing可知不可能是Tom,用can't表否定推测。 重难点四：情态动词should和ought to的用法讲解： should表示”应该应当”，强调责任和义务，否定形式为shouldn't。 You should respect your parents.(责任义务) We shouldn't waste water.（否定) ought to表示”应该'，语气比should稍强，否定形式为ought not to。 You ought to follow the traffic rules.(应该) He ought not to speak like that.(否定) 真题再现： l.(2024·山东泰安期中鲁教版)You_brush your teeth twice a day to keep them healthy. A.can B.may C.should D.must 答案：C解析：根据语境表示建议应该一天刷两次牙，用should合适。 2.(2023·山东日照月考鲁教版)We to help the old and the poor: A.should B.ought C.must D.can 答案：B解析：ought to为固定搭配表示应该，符合语境。 3 9下鲁教版（五四制） 【寒假专版】 D版重难点精讲 重难点五：情态动词的过去式用法讲解： cold是can的过去式，表示过去的能力或许可。 He could swim when he was five.(过去的能力) You could go out yesterday.(过去的许可) might是may的过去式，表示过去的可能性。 He might have told you the news.(过去的可能性) must have done表示对过去事情的肯定推测。 He must have finished his work.(对过去事情的肯定推测) 真题再现： l.(2024·山东潍坊期末鲁教版)She_ride a bike when she was six years old.. A.can B.could C.may D.might 答案：B 解析：根据时间状语when she was six years old可知表示过去的能力，用could。 2.(2023·山东济宁月考鲁教版)The ground is wet.t_rained last night. A.must have B.can have C.should have D.need have 答案：A解析：根据The ground is wet可知对过去事情进行肯定推测，用must have rained。 易错点综合演练 L单项选择（直击重难点) 1.-I borrow your science notebook?I missed the class yesterday. A.Must B.Should C.Can D.Need 2.You play with fire in the forest.It's against the rules and very dangerous. A.mustn't B.needn't C.may not 9下鲁教版（五四制） 【寒假专版】 D版重难点精讲 D.can't 3.The girl in red be Lucy.She is the only one with long curly hair in our class. A.must B.may C.might D.can't 4.-Must we hand in the report before Friday? -No,you.You can submit it next Monday. A.mustn't B.needn't C.can't D.shouldn't Ⅱ.用所给词的适当形式填空（强化句型结构） 1.My brother(dare not)swim in the deep river when he was young 2.There_be)a heavy rain tomorrow according to the weather forecast..(提示：用表推测的情态 动词) 3.She_(should finish)her homework by now,but she is still playing games.(提示：用情态动词 +have done结构) 4.-Need I call him immediately? -No,you(not need).He will come here in ten minutes. 血.句型转换（巩固否定、疑问句式) 1.You must clean your bedroom before dinner.(改为否定句) 2.He may know the answer to this question.(改为一般疑问句) 3.They must have arrived at the station on time..(对划线部分提问) (伐划线部分：on time) 4.She can speak three foreign languages..(改为同义句，用be able to) V.句子翻译（综合运用） 1. 我们应该每天至少刷两次牙来保持口腔健康。(should) 5 9下鲁教版（五四制） 【寒假专版】 D版重难点精讲 2.他昨天不可能去看电影了，因为他一整天都在图书馆学习。(can't have done) 你敢在全校师生面前做演讲吗？ 是的，我敢。(dare) 我必须现在就完成这份工作吗？ 不，你不必。你可以明天做。(must/needn't) 参考答案 1.单项选择：1.C2.A3.A4B Ⅱ.用所给词的适当形式填空：1.dared not2 may be3.should have finished4.needn't Ⅲ.句型转换： 1.You mustn't clean your bedroom before dinner. 2.May he know the answer to this question? 3.When must they have arrived at the station? 4.She is able to speak three foreign languages. V.句子翻译： 1.We should brush our teeth at least twice a day to keep our mouth healthy. 2.He can't have gone to the movies yesterday because he studied in the library all day. 3.-Dare you give a speech in front of all the teachers and students? -Yes,I dare. 4.-Must I finish the work now? -No,you needn't.You can do it tomorrow. 6