基础动词用法 情态动词系统讲解-2025-2026学年高考复习高中英语语法知识点全解（译林版）

高中译林版 【语法专版】 基础动词用法 语法专版 【专题】情态动词系统讲解 高中英语语法全解 考频分析 译林版高中英语基础动词用法中，情态动词系统讲解是重点语法模块，考频占词法总量的15%左 右，贯穿试卷所有核心题型：单项选择2-3题、完形填空2-3题、语法填空1-2题、书面表达核心 考察，直接影响句子完整性与准确性。在语境理解类题目中，情态动词的语气辨析、时态搭配及虚 拟用法往往是解题关键。 考查内容 高中英语对情态动词的考察聚焦三大维度，覆盖基础用法与语境应用： ·基本含义与用法：can/could、may/might、must/have to、shall/should、will/would、need、dare 的核心语义（能力、许可、推测、义务、意愿等）及肯定/否定/疑问形式 ·推测用法：情态动词表肯定推测(must、should、may、might)、否定推测(can't、couldn't、 may not、might not)的程度差异与语境限制（时态、句式） ·虚拟语气与特殊用法：could/might/would用于虚拟条件句，should用于建议/命令句型，情态 动词+have done表对过去的推测或虚拟（如needn't have done) 知识点一：情态动词的分类及基础用法 1.能力与许可类情态动词 常见情态动词：can(现在/将来能力/许可)、人could(过去能力/委婉许可) 例句： 1.She can speak three languages.（表现在能力) 2.Could I use your phone?(表委婉许可) 2.推测与可能性类情态动词 1 高中译林版 【语法专版】 基础动词用法 常见情态动词：may(可能，语气较弱)、might(可能性更小，或过去推测) 例句： 1.He may be at home now.(表现在可能) 2.They might have arrived yesterday.（表过去可能性推测) 3.义务与必要性类情态动词 常见情态动词：must(必须，主观义务)、have to(不得不，客观必要) 例句： 1.You must follow the school rules..(表主观义务) 2.She has to work late tonight.(表客观必要) 4.建议与推测类情态动词 常见情态动词：should(应该，表建议)、ought to(应当，语气略正式) 例句： 1.You should study harder for the exam.(表建议) 2.We ought to help those in need.(表责任义务) 5.情态动词的否定形式 常见否定：can't(不可能/不允许)、nustn't(禁止)、needn't（不必) 例句： l.You can't park here.(表禁止) 2.You needn't come early tomorrow.(表不必) 知识点二：情态动词基本用法 l.can/could(能力、许可、请求) 基本含义： can表示“能、会”（现在能力）、“可以”（许可）；could为can的过去式，表过去能力，也可表委 婉请求（语气比can弱） 句型结构： 肯定句：主语+can/could+动词原形 高中译林版 【语法专版】 基础动词用法 否定句：主语+can/could not+动词原形(can't/couldn't) 疑问句：Can/Could+主语+动词原形？ 例句： l.I can speak English fluently.(现在能力，can+speak原形) 2.She couldn't ride a bike when she was five..(过去能力，couldn't+ride原形) 3.Could you please pass me the book?(委婉请求，could+pass原形) 2.may/might(许可、可能性) 基本含义： may表示“可以”（许可，比can正式）、“可能”（可能性）：might为may的过去式，表过去许可， 也可表较小可能性 句型结构： 肯定句：主语+may/might+动词原形 否定句：主语+may not+动词原形(might not表“可能不”) 疑问句：May+主语+动词原形？(might一般不用于疑问句表许可) 例句： 1.You may leave the classroom now.(许可，may+-leave原形) 2.It might rain tomorrow.(较小可能性，might+rain原形) 3.May I use your pen?(请求许可，May+use原形) 3.must/have to(必须、义务) 基本含义： must表示“必须”（主观义务，强调说话人意愿）：haveto表示“不得不”（客观需要，有人称、时态变化） 句型结构： must肯定句：主语+must+动词原形 must否定句：主语+must not+动词原形(mustn't,表“禁止”) have to肯定句：主语+have/has to+动词原形（三单has to,过去式had to) have to否定句：主语+don't/doesn't/didn't have to+动词原形（表“不必”） 例句： 1.We must obey the school rules.（主观必须，must+obey原形) 3 高中译林版 【语法专版】 基础动词用法 2.She has to get up early every morning.(客观需要，has to+get原形) 3.You mustn't smoke here.(禁止，mustn't+smoke原形) 4.should/ought to（应该、建议) 基本含义： should表示“应该”（责任、建议，语气比must弱）：ought to含义与should相近，结构为ought to +动词原形 句型结构： 肯定句：主语+should/ought to+动词原形 否定句：主语+should not-+动词原形(shouldn't)/ought not to+动词原形 例句： 1.You should study hard for the exam.(建议，should+study原形) 2.We ought to help each other.(责任，ought to+help原形) 3.You shouldn't eat too much junk food.(否定建议，shouldn't+eat原形) 5.need(需要、必要) 基本含义： need作情态动词时表“需要”，主要用于否定句和疑问句，肯定句中一般用实义动词need(need to do sth) 句型结构： 情态动词否定句：主语+need not+动词原形(neeh't,表“不必”) 情态动词疑问句：Need+主语+动词原形？ 例句： l.You needn't come so early.(不必，needn't+come原形) 2.Need I finish the work today?(需要吗，Need+finish原形) 3.He needs to buy a new schoolbag.(实义动词，needs to+-buy原形) 6.wil/would（意愿、习惯) 基本含义： will表示“将、会”（将来时助动词）、“愿意”（主观意愿）：would为wil的过去式，表过去意愿 高中译林版 【语法专版】 基础动词用法 过去习惯，也可表委婉请求 句型结构： 肯定句：主语+will/would+动词原形 否定句：主语+will/would not+动词原形(won't/wouldn't) 例句： l.I will help you with your homework.(意愿，will+help原形) 2.She would always go for a walk after dinner..(过去习惯，would+go原形) 3.Would you like some coffee?(委婉请求，Would+like原形) 知识点三：情态动词 1.基础含义及用法（中考必背） l.can(能/会/可以)→例句：She can speak three languages. 2.may(可以/可能)→例句：You may borrow my book. 3.must(必须/一定)→例句：We must follow the school rules. 4.should(应该)→例句：You should eat more vegetables. 5.will(将要/愿意)→例句：I will help you with your English. 6.would(将要/愿意，will的过去式)→例句：He said he would come to the party. 7.need(需要)→例句：You need finish your homework first, 8.had better(最好)→例句：You had better go to bed early. 2.否定形式（中考常考） 1.can't（不能/不可以)→例句：You can't park here. 2.mustn't(禁止)→例句：You mustn't play with fire. 3.needn't(不必)→例句：You needn't come so early.. 4.shouldn't(不应该)→例句：You shouldn't talk loudly in the library. 3.疑问及回答（中考易错） 高中译林版 【语法专版】 基础动词用法 1.Can.?→肯定回答：Yes,.can.否定回答：No,can't. →例句：一Can you swim?-Yes,Ican.No,Ican't. 2.Must.?→肯定回答：Yes,must.否定回答：No,.needn't.No,don't have to.. →例句：一Must I hand in my homework today?-Yes,you must.No,you needn't. 3.May.?→肯定回答：Yes,may.否定回答：No,can'tNo,.mustn't. →例句：一May I use your pen?-Yes,you may..No,you can't, 考法精析 考法一：情态动词表推测的语气强弱与时间语境 核心：根据语境判断推测的语气强弱及时间，选择正确的情态动词及结构 真题1（语法填空)： The ground is all wet.It_(rain)heavily last night 答案：must have rained 解析：由“地面全湿了”可知对过去情况的肯定推测，语气最强用ust,对过去的推测结构为“情 态动词+have+过去分词”，rain的过去分词为rained。. 真题2（完形填空）： -Where is Lucy? -Shebe in the library.I saw her there just now. A.must B.may C.might D.could 答案：A 解析：由“刚才看见她在那里”可知对现在情况的肯定推测，语气最强用ust,表“一定”。 考法二：情态动词表推测与虚拟语气综合运用 核心：结合语境判断情态动词表推测的语气强弱及时态，区分”情态动词+have done'”的推测与虚 拟含义 真题1（语法填空）： The ground is all wet.It_(rain)heavily last night 答案：must have rained 解析：由”ground is all wet'可知对过去情况的肯定推测，语气最强用must,后接have+过去分词， rain的过去分词为rained。. 真题2（单项选择)： -Why didn't you attend the meeting yesterday? 6 高中译林版 【语法专版】 基础动词用法 -I-have come,but I suddenly fell ill. A.should B.must C.may D.can 答案：A 解析：根据but I suddenly fell ill,可知此处表”本应该做却没做”的虚拟含义，用should have done 结构，符合语境中”本该参加却因病未到”的逻辑。 考法三：情态动词的综合运用与交际应答 核心：结合情态动词的分类、基本用法及交际用语，根据语境判断情态动词的含义（能力、许可、 推测、义务等)并正确使用其句式结构与应答方式 真题1（单项选择)： -I borrow your umbrella?It'sraining heavily outside. -Sorry,I'm afraid not.I need it myself. A.Must B.Should C.May D.Will 答案：C 解析：根据语境“借雨伞”可知是请求许可，MayI?是请求许可的常用句型，符合题意。Must 表“必须”，Should表“应该”，Wil表“意愿”，均不符合语境。 真题2（语法填空）： You_(not park)your car here.Look at the sign "No Parking". 答案：mustn't 解析：根据“No Parking”标志可知此处表“禁止”，mustn't意为“禁止”，符合语境。否定形式直 接在must后加not,缩写为nustn't。 解题小妙招 情态动词解题妙招 推测语气看语境，肯定must强90，may might弱30： 过去推测have done,现在推测原形跟： 虚拟语气有两种，should have本应做，needn't have本不必； 反意疑问看时态，must推测按实态： 被动结构be done,结合情态不变更： 综合运用看逻辑，语境优先细分析。 真题演练 演练一：单项选择试题（共10题) 7 高中译林版 【语法专版】 基础动词用法 1.You_have told me the truth earlier.Now it's too late to fix the problem. A.must B.should C.might D.could 2.-Is Tom in the classroom? -He_be there.I saw him leave with his friends five minutes ago. A.mustn't B.shouldn't C.can't D.needn't 3.If Ispeak French fluently,I would work in Paris. A.can B.could C.may D.might 4.You-park here.The sign clearly says"No Parking". A.mustn't B.needn't C.wouldn't D.couldn't 5.She-have finished the project by now-she started it two weeks ago. A.must B.should C.may D.might 6.-Could I borrow your umbrella? -Yes,you.But please return it tomorrow. A.might B.could C.can D.should 7.We-take a taxi to the station.The bus is always late during rush hour. A.must B.have to C.should D.ought to 8.You_worry about me.I can take care of myself. A.needn't B.mustn't C.shouldn't D.can't 9.The light is off.They-have gone to bed A.must B.may C.might D.could 10.If you-harder,you would have passed the exam. A.study B.studied C.had studied D.would study 演练二：填空试题（共10题） 1.You(not come)to the meeting yesterday.It was cancelled at the last minute. 2.This book(return)to the library by Friday,or you will be fined. 3.She looks upset.She _(hear)the bad news. 4.You(take)an umbrella.It's going to rain heavily this afternoon. 5.He_(speak)English fluently when he was five years old. 6.If I had known you were coming,I(cook)something special. 7.You_(not buy)so much bread.We still have plenty from yesterday. 8.-I use your phone to call my mom? 一Sure,go ahead. 8 高中译林版 【语法专版】 基础动词用法 9.The door is locked.They_(go)out for dinner. 10.You(be)more careful when crossing the street.It's dangerous. 演练三：语法填空试题（共10空) A recent survey shows that many students struggle with usage.Here are some common mistakes and tips: First,some students confuse"must"and"have to"."Must"shows a personal obligation,while"have to"is for external pressure.For example,"I 1.-(study)hard because my parents expect it"uses"have to",not ”must'. Second,”情态动词+have done''is often misused.If you see"but''in a sentence,.it may indicate a missed obligation.For example,"You 2.-(tell)me you were coming-I made no preparations!"uses"should have told" Third,推测语气depends on context.”The ground is wet,soit3.(rain)last night''uses"must have rained(strong certainty),while"She isn't answering the phone-she 4.-(be)in the shower"uses"might be"(weaker possibility). Fourth,被动语态with情态动词requires"be+过去分词'.For example,.This task5.一(finish)by Friday"should be"must be finished". Finally,反意疑问句rules:If"must”shows推测，use the actual tense.He must have left,6.一he? (answer:hasn't). Remember,practice 7.-(make)perfect!You 8.(not fear)mistakes-they help you learn.If you follow these tips,,you9._master)情态动词soon.And if you still struggle,youl0.一(ask)your teacher for help. 答案区 演练-：1B2.C3B4.A5.B6.C7.B8.A9.A10.C 1.needn't have come 2.must be returned 3.must have heard 4.had better take/should take 5.could speak 6.would have cooked 7.needn't have bought 8.May/Could 9.must have gone 10.should be 1.have to study 2.should have told 3.must have rained 4.might be 5.must be finished 6.hasn't 7.makes 8.needn't fear 9.will master 10.can ask 9