情态动词系统复习-备战2026届高考英语一轮复习语法全解（冀教版）

ENGLISH-语法复习系列资料（冀教版） Chapter1情态动词系统复习 考频分析 情态动词系统复习是高中英语语法的重要模块，考频占语法总量的0%左右，涉及试卷多个核心题型：单 项选择1-2题、完形填空2-3题、语法填空1-2题、书面表达（高频考察，直接影响语气表达与语境适配）。 在语境理解类题目中，情态动词的推测用法、语气强弱及词义辨析往往是解题关键。 老查内容 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： ·基本含义与语气表达：can/could表能力与许可、may/might表可能性与请求、must/have to表必须与推 测、will/would表意愿与习惯、should/ought to表建议与义务的辨析； ·情态动词+完成时的用法：needn't have done表不必要做却做了、should have done表本应做却未做、 must have done表对过去肯定推测的结构与语义理解； ·语境中的灵活运用：根据上下文判断情态动词的委婉语气（如could/would代替can/will)、推测程度 (must/may/might的可能性强弱对比)及反义疑问句搭配。 精讲精练 知识点一：情态动词的基本含义及用法 ·1.can/could(能力/许可/推测) -用法区分：can表现在或一般能力，could表过去能力或委婉请求 -例句：☐She can speak three languages.(表现在能力)☐Could you please open the window?(委 婉请求)口It could rain tomorrow.(可能性推测，语气弱于may) ·2.may/might(许可/推测) -用法区分：may表正式许可或较高可能性，might表较低可能性或委婉请求（更正式） -例句：口You may leave the classroom now.(正式许可)口He might come late.(可能性推测，语气 弱于may) ·3.must/have to(必须/肯定推测) -用法区分：must表主观必须，have to表客观需要；mustn't表禁止，don't have to表不必 -例句：口Ve must obey traffic rules.(主观义务)口She has to work overtime today..(客观要求)口 This must be John's book.(肯定推测，语气最强) ·4.should/ought to(建议债任/推测) -用法区分：should表建议或责任，ought to语气略正式，两者后均接动词原形 -例句：口You should study harder for the exam.(建议)口He ought to apologize for his mistake.(责 任义务) ·5.will/would(意愿/习惯/预测) -用法区分：will表现在意愿或客观预测，would表过去习惯或委婉请求 -例句：I will help you with your English.(现在意愿)☐She would often go for a walk after dinner. (过去习惯)口It will rain soon.(客观预测) 【即学即练】 1.【can/could用法】-_you swim when you were8?-Yes,I一.But now I_not swim well because I haven't practiced for years 2.【may/might辨析】Which sentence shows lower possibility? A.He may win the game. B.He might win the game. C.He must win the game. D.He should win the game. 3.【must/have to区分】We_wear masks in public places during the epidemic.(客观要求，用have to 的适当形式) 4.【should/ought to用法】You_(apologize)to her for your rude words.(用ought to+动词原形填空) 5.【will/would辨析】She_often go to the park with her grandma when she was little.(表过去习惯，用 would/wil填空) 语法复习|英语|冀教版 ENGLISH-语法复习系列资料（冀教版） 知识点二：情态动词的特殊用法及易错点 ·1.情态动词表推测的可能性层级（从强到弱)》 -口肯定推测must(一定，90%以上可能性)、should/ought to(应该，8o%可能性)、may/might/could (可能.50%-20%可能性) -☐否定推测cant(不可能，可能性0%)、may not/might not(可能不，20%-50%可能性) -例句：口The light is on.He must be at home.(灯亮着，他一定在家，肯定推测最强)口You shouldn't be late for class.(你不应该迟到，推测“按道理不该”)口It may rain tomorrow,but'm not sure.(明 天可能下雨，可能性中等)口She can't speak French.She never studied it..(她不可能会说法语，否 定推测最强) ·2.情态动词+have done的用法（表对过去的推测或虚拟） -☐must have done(一定做过，对过去肯定推测)例句：The ground is wet.It must have rained last night..(地面湿了，昨晚一定下雨了) -口can't/couldn't have done(不可能做过，对过去否定推测)例句：He couldn't have finished the work alone.t's too difficult.(他不可能独自完成这项工作，太难了) 一口may/might have done(可能做过，对过去不确定推测)例句：She might have missed the bus..That's why she's late.(她可能错过了公交车，所以才迟到) -口should/ought to have done(本应该做却没做，表责备或遗憾)例句：You should have told me the truth earlier..(你本应该早点告诉我真相，实际没告诉) -☐needn't have done(本不必做却做了，表多余动作)例句：You needn't have bought so much food. e have enough.(你本不必买这么多食物，我们已经够了) ·3.情态动词的语气差异与固定搭配 -口委婉请求的语气对比Can you.？(非正式，日常对话)、Could you..？(较委婉，适用于陌生人)、 Nould you.？(最委婉，表礼貌请求)、Mayl.？(正式场合，表许可请求)例句：口Can you pass the salt?(同桌间，非正式)口Could you help me carry this box？(对邻居，较委婉)Would you mind opening the door?(对客人，最委婉)May I come in?(对老师，正式许可请求) -口固定搭配had better do(最好做某事，否定式had better not do)例句：You had better take an umbrella.lt's going to rain..(你最好带把伞，要下雨了)would rather do(宁愿做某事，否定式would rather not do)例句：I would rather stay at home than go out..(我宁愿待在家里也不愿出去) 知识点三：情态动词的时态呼应及情景应用 ·1.情态动词与不同时态的搭配（基础语法） -口一般现在时can/may/must/should/will+动词原形（表现在或经常性动作）例句：-You must wear a seatbelt when driving.(开车时必须系安全带，经常性要求)-The library may close at5p.m.on weekends.(图书馆周未可能五点关门，现在情况) -口一般过去时could/might/would/should+have done(表对过去的推测或虚拟，见知识点二)+动词 原形（表过去能力或习惯）例句：-She could swim across the river when she was ten.(她十岁时能 游过河，过去能力)-They would gather here every Sunday last year..(去年他们每周日都会聚在这 里，过去习惯) -口一般将来时will/may/might+动词原形（表将来推测或意愿）例句：-The meeting will start at9a.m. tomorrow.(会议明天九点开始，客观将来)-It might snow next week,according to the forecast..(天 气预报说下周可能下雪，将来推测) ·2.情态动词在情景对话中的应用（交际高频） -口日常请求与回应A:Could you lend me your dictionary?(委婉请求)B:Sure,here you are.Sorry, 'm using it now.(肯定否定回应)A:May I use your phone?(正式请求许可)B:Yes,you may.INo, you mustn't.It's broken.(允许/禁止回应) -口推测与判断A:hy isn't Tom here?(询问原因)B:He must have missed the train.(对过去的肯定 推测)A:Is this Mary's coat'?(确认归属)B:tcan't be hers..She never wears red.(否定推测，可 能性0%)》 -口建议与劝告A:I have a headache.(陈述问题)B:You should see a doctor.(提出建议)A:I failed the exam.(表达结果)B:You ought to study harder next time.(提出责任要求) ·3.易混情态动词对比（语法易错） -口must vs.have to-must强调主观义务（说话人认为必须）：Ve must protect the environment..(我 们必须保护环境，主观认识)-have to强调客观压力（外界要求）：I have to go to work on weekends. (我周末不得不上班，公司规定)否定差异：-mustn't(禁止)：You mustn't park here..(禁止停车)- don't have to(不必)：You don't have to come early.(你不必早来，无必要) -口can vs.be able to-can只能用于现在/过去时；be able to可用于各种时态：She can speak English. (现在能力)→She has been able to speak English since she was five.(现在完成时)-表成功做某 事时用be able to:After practicing,he was able to swim1O0 meters.(练习后他终于能游1O0米，成 功结果) -口will vs.be going to-wil表客观预测或l临时决定：''ll help you if you need.(I临时决定)-be going to表计划或有迹象的将来：Look at the dark clouds.t's going to rain.(乌云预示将要下雨，有迹象) 语法复习|英语|冀教版 ENGLISH-语法复习系列资料（冀教版） 考法一：情态动词表推测的可能性层级判断 ·核心：根据语境中动作发生的可能性大小，选择对应情态动词(must/can't/should/may/might等) ·真题1（语法填空）： The door is locked.He-be at home now. 一答案：cn't解析：由“门是锁着的”可知，对“他在家”进行否定推测且可能性为0%，根据知识点 二表推测的否定推测层级，can't表“不可能”，符合语境。 ·真题2（完形填空）： --Where is Lucy? --She_be in the library.I saw her go there just now. A.must B.might C.may D.can't 一答案：A解析：由“刚才看到她去图书馆了”可知，对“她在图书馆”进行肯定推测且可能性极高(90% 以上)，根据知识点二肯定推测层级，must表“一定”，语气最强，符合语境。 考法二：情态动词表推测的时态呼应 ·核心：结合不同时态语境，判断对现在、过去或将来的推测，选择正确的情态动词形式 ·真题1（语法填空）： The door is locked.They _(go)out for dinner. -答案：must have gone解析：由”door is locked'”(现在状态)推断过去动作，对过去肯定推测用must have done,故t填must have gone. ·真题2（完形填空）： --Why didn't you answer my call? --1-(sleep)when you called.I didn't hear it. A.must sleep B.must have slept C.might sleep D.might have slept -答案：D解析：由”didn't answer'”和"called”可知是对过去动作的不确定推测，用might have done表” 可能做过”，must have slept语气过于肯定不符合语境，故选D。 考法三：情态动词的综合运用与语境推测 ·核心：结合时态呼应、推测可能性层级及情景应用，判断情态动词的正确形式 ·真题1（单项选择）： The light is off.He_have gone to bed,but I'm not sure. A.must B.should C.might D.can -答案：C解析：根据"light is off'和"not sure”可知为不确定的肯定推测，可能性层级中might表20%- 50%可能性，符合语境；must表90%以上肯定推测与"not sure”矛盾，should表”按道理应该”，can 表推测不用于肯定句。 ·真题2（语法填空）： You _(not buy)so much food yesterday.We already had plenty in the fridge. -答案：needn't have bought解析：根据"yesterday'”和”already had plenty”可知表过去本不必做却做 了的动作，需用情态动词+have done结构；needn't have done表示”本不必做”，符合题意；注意否 定词not要置于情态动词之后。 语法复习|英语|冀教版 ENGLISH-语法复习系列资料（冀教版） 解题小妙招 推测判断妙招 推测先看可能性，must一定can't无；may或许might没准，层级高低要清楚： 再辨时态定形式，现在推测用原形；过去动作看完成，have done跟其后；将来推测加will,情态动词不 糊涂。 语境综合是关键，肯定否定要分明；must not表禁止，推测否定cant用；should按理应该做，might不 确定莫滥用。 真题演练 演练一：单项选择试题（共10题） 1.The ground is completely dry.It_rained last night. A.must B.can't C.should D.may 2.-Could I borrow your bike? 3.-Sorry,you.I need it for work. A.couldn't B.can't C.mustn't D.may not 4.You_have told me the news earlier.I missed the chance to prepare. A.should B.must C.would D.might 5.She_speak French fluently when she was five,but now she has forgotten most of it. A.could B.can C.must D.should 6.The exam results _be published next week,according to the teacher. A.will B.would C.must D.may 7.-Why isn't Peter answering the phone? 8.-He-be taking a shower.Let's call later. A.must B.might C.should D.can't 9.Youpark here.The sign says "No Parking". A.mustn't B.needn't C.couldn't D.won't 10.After practicing for months,she_swim across the river successfully. A.can B.could C.was able to D.must 11.I_go to the party tonight,but I'm not sure yet.I have a lot of homework. A.will B.may C.must D.should 12.He_often walk to school when he was in primary school. A.would B.will C.must D.should 演练二：填空试题（共10题） 1.You _(not worry)about me.I can take care of myself. 2.The light is on.They_(watch)TV in the living room now. 3.She_(finish)the project yesterday,but she was ill and couldn't. 4.If you don't hurry,you_(miss)the last bus. 5.He_(not be)at home.His car isn't in the driveway. 6.You(ask)for permission before using my computer.It's impolite to do that without telling me. 7.The students _(hand in)their homework by Friday,or they will get a low score. 8.I_(help)you with your luggage if you want. 9.She(not eat)all the cake.There's still some left in the fridge. 10.You _(take)an umbrella.The weather forecast says it will rain this afternoon 演练三：语法填空试题（共10空） 阅读下面短文，在空白处填入适当的情态动词（每空一词）。 Last Sunday,I planned to visit the museum with my friend Tom.We agreed to meet at 9 a.m.,but he didn' t show up.I called him several times,but he didn't answer.He_(1)have overslept,as he often stays up late on weekends.I(2)have called his mother to check,but I thought it might be rude. At 10 a.m.,Tom finally arrived.He looked tired and said,"I'm sorry.My bike broke down on the way, and I(3)walk here.I tried to call you,but my phone died."I felt a little angry at first,but then I realized he_(4)have told me earlier if he could. We decided to go to the museum anyway.The exhibition was amazing!We_(5)spend hours there,but we had to leave at noon because Tom_(6)attend a family lunch. On the way back,Tom said,"1_(7)have prepared better.I should have checked my bike and phone battery before leaving."I smiled and said,"It's okay.We_(8)come again next weekend if you're free."He nodded and said,"1(9)definitely make sure everything is ready next time.I(10)let you down again.” 答案 演练一：单项选择 1.B2.B3.A4.A5.A6.B7.A8.C9.B10.A 演练二：填空试题 1.needn't/don't need to 2.must be watching 3.should have finished 4.will miss 5.can't be 6.should ask 7.must hand in have to hand in 8.will help /can help 9.can't have eaten 10. had better take should take 演练三：语法填空 1.must 2.could might 3.had to 4.would /might 5.could /might 6.had to 7.should 8.can may 9.will 10.won't/mustn't 语法复习|英语|冀教版