Unit1-2情态动词-2025-2026学年高中英语期末语法复习必修2（外研版）

期末语法复习 必修2·外研版·Unit1-2:情态动词 一、情态动词核心用法详解 情态动词是英语中表示说话人语气和态度的重要词类，主要用于表达能力、许可、义 务、推测等含义，核心考点围绕不同情态动词的基本用法、推测用法及情态动词+have done结构展开。 考点一：can/could的用法 结构：表示能力（现在用can,过去用could);表示请求或许可(Could yor.?更委婉）； 表示推测（用于否定句/疑问句，可能性比may小） 例句：She can speak three languages fluently.(能力) 真题再现： 一—you pass me the dictionary?【2022XX市高一期末】 -Sure,here you are. A)Must B)Should C)Could D)Need 答案：C Heswim when he was five years old.【2021XX省联考】 A)can B)could C)may D)might 答案：B 考点二：may/might的用法 结构：表示许可(MayI.?肯定回答用Yes,you may/cam;否定用No,you mustn't/can't): 表示推测（用于肯定句，might可能性比may小）；may/might as well+动词原形(“不 妨做某事”) 例句：You may leave the classroom after finishing the test..(许可) 真题再现： 一_I use your phone?Mine is out of power..【2023XX省高二期末】 Of course you can. A)Must B)May C)Need D)Should 答案：B She_be at home now,butI'm not sure.【2022XX市模拟】 A)must B)should C)may D)can 答案：C 考点三：must/have to的用法 结构：must表示主观“必须”（否定mustn't“禁止”）；have to表示客观“不得不”（有 人称时态变化)：must表推测（用于肯定句，语气最强）；must引导疑问句，否定回答 needn't/don't have to 例句：We must obey traffic rules.（主观必须) 真题再现： Youplay with fire..It's dangerous.【2021XX省中考改编】 A)mustn't B)needn't C)might not D)couldn't 答案：A 一Must I hand in the report today?【2023XX市高一质检】 No,you_.You can do it tomorrow. A)mustn't B)needn't C)can't D)shouldn't 答案：B 考点四：should/ought to的用法 结构：表示“应该”(ought to语气略强，否定为ought not to);表示推测(“按道理应 该”")；should have done表示“本应该做但未做” 例句：You should apologize for your rudeness.(应该) 真题再现： Hehave anived by now一he left two hours ago.【2022全国甲卷模拟】 A)should B)must C)can D)might 答案：A You have told me the truth earlier.Now it's too late..【2021XX市高三一模】 A)must B)should C)could D)might 答案：B 考点五：will/would的用法 结构：wil表示意愿/习惯/请求(Will you.?);would表示过去习惯/委婉请求(Would you.?);would have done表示“本愿意做但未做” 例句：She will always help people in need.(意愿) 真题再现： you please close the window?It's cold outside.【2023XX省高二期末】 Sure. A)Will B)Would C)Must D)Should 答案：B When he was young,he_often go swimming in the river..【2022XX市高一联考】 A)will B)would C)should D)might 答案：B 考点六：情态动词表推测的用法对比 结构：must（肯定，90%)>should/ought to(按道理应该，80%)>may/might（可能， 50%/30%);否定推测用cam't(不可能，90%)>couldn't（不太可能，80%)>may not/might not(可能不，50%/30%) 例句：The light is on,so he must be at home.(肯定推测) 真题再现： 一Who is knocking at the door?【2021XX省高考真题】 -It be Mary.She promised to come. A)must B)need C)can D)shall 答案：A This be John's book-it has his name on it..【2023新高考II卷模拟】 A)needn't B)can't C)must D)may 答案：C 考点七：情态动词+have done的用法 结构：must have done(肯定做过)；camt/couldn't have done(不可能做过)；may/might have done(可能做过)；should/ought to have done(本应该做)；needn't have done(本不 必做) 例句：You needn't have bought so much food-一we have plenty.(本不必做) 真题再现： The ground is wet.It rained heavily last night.【2022XX市高二质检】 A)must have B)should have C)could have D)might have 答案：A You have taken the umbrella-it's not raining now.【2021XX省联考】 A)mustn't B)needn't C)can't D)shouldn't 答案：B 二、考点综合训练 (一)单项选择 1.-you please help me carry this box?It's too heavy. A)Must B)Should C)Could D)Need 2.She_swim across the river when she was only six years old. A)can B)could C)may D)might 3.Youplay loud music in the hospital.It disturbs patients. A)mustn't B)needn't C)might not D)couldn't 4.-Must I return the book before Friday? -No,you_.You can keep it for another week. A)mustn't B)needn't C)can't D)shouldn't 5.The ground is covered with snow.It_snowed heavily last night. A)must have B)should have C)could have D)might have 6.If yousee Tom,tell him to call me back immediately. A)must B)should C)would D)need (二)完成句子 1.你本应该按时完成作业的，但你却忘记了。 You your homework on time,but you forgot. 2.她现在可能正在图书馆看书。 Shebooks in the library now. 3.我们必须遵守学校的规章制度。 Wethe school rules 4.如果明天下雨，我们就不去野餐了。 Ifit rain tomorrow,we not go for a picnic. 5.你不必买这么多水果，我们冰箱里还有很多。 You bought so much fruitwe have plenty in the fridge. (三)短文改错 1.You mustn't to smoke in public places.It's against the law. 2.She can speak three languages when she was a child 3.If you will see Mary,please ask her to bring my notebook. 4.You should have told me the truth yesterday-I needn't have worried. 5.The door is locked,so he mustn't be at home now. (四)语法填空 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 Peter:Hi,Mary!I heard you missed the class yesterday.You(must)have been ill,right? Mary:Yes,I had a fever.The doctor said I(should)stay in bed for two days. Peter:I'm sorry to hear that.Do you need help with the lessons?I(can)lend you my notes. Mary:That would be great!By the way,I borrow your English dictionary for a day?Mine is lost. Peter:Of course you_.I'll bring it to you tomorrow. Mary:Thank you so much!I(should)have told you earlier,but I felt too weak. Peter:Don't worry.You(needn't)have apologized.We're friends! (五)参考答案与解析 1.单项选择答案：1.C2.B3.A4.B5.A6.B 2.完成句子答案： 1.should have finished 2.may/might be reading 3.must obey 4.should,would 5.needn't have 3.短文改错答案： 1.删除to2.can→cold3.删除wi山 4.needn't→needn't have5.nustn't→can't 4.语法填空答案： must should can may can should needn't 英语语法复习手册·必修2·外研版·情态动词