情态动词系统复习-2025-2026学年九年级英语全一册语法考点精讲（沪外版）

9年级沪外版 【寒假专版】B版考点精讲 寒假专版 情态动词系统复习 语法专项突破 考点精讲 考点一：情态动词can/could的用法 规则：can表示“能、会”，用于现在或将来；could是can的过去式，表示过去的能力，也可用 于委婉请求。否定形式为can't/couldn't。 例题l:例题1（选择，沪外版七上期末真题改编）：he一swim when she was five.A.canB.could C.may D.must (答案：B) 例题2：例题2（填空）：_you please pass me the book? (答案：Could) 考点二：情态动词may/might的用法 规则：may表示“可以、可能”，用于请求许可或推测：might语气比may更弱，表示“可能”， 否定形式为may not/might not。 例题1：例题（选择，沪外版八上期末真题改编）：一一I borrow your dictionary?一Yes,you can, A.Must B.Should C.MayD.Need(答案：C) 例题2： 考点三：情态动词must/have to的用法 规则：must表示“必须、一定”，强调主观义务；have to表示“不得不”，强调客观需要。must 否定形式为nustn't(禁止)，have to否定形式为don't have to(不必)。 例题l:例题1（选择）：You-stop at ared light.A.must B.mayC.canD.could(答案：A) 例题2：例题2（填空）：It's raining heavily,,sowe一stay at home.. (答案：have to) 考点四：情态动词should/ought to的用法 规则：should和ought to均表示“应该”，should更常用，ought to后接动词原形。否定形式为 shouldn't/ought not to 例题1：例题（句型转换）：You should finish your homework first.(改为否定句)You_finish your homework first..（答案：shouldn't) 1 9年级沪外版 【寒假专版】B版考点精讲 例题2： 考点五：情态动词表推测的用法 规则：must用于肯定句表“一定”，may/might用于肯定句或否定句表“可能”，can't用于否定句 表“不可能”。 例题l:例题（选择，沪外版八下期末真题改编）：The man一_be our teacher..He is in Beijing now. A.must B.may C.can't D.might (答案：C) 例题2： 考点综合训练 一、单项选择 1.He_play basketball well when he was young. A.can B.could C.may D.must 2.-I use your phone?I need to call my mom -Sure,here you are. A.Must B.Should C.May D.Need 3.You-run in the hallway.It's dangerous. A.mustn't B.needn't C.may not D.couldn't 4.The girlbe Lucy.She has short hair,but Lucy's hair is long. A.must B.may C.can't D.might 5.Wefinish our project before Friday,or the teacher will be angry. A.can B.must C.may D.could 6.You_brush your teeth twice a day to keep them healthy. A.should B.can C.may D.might 7.-Where is Jack? -He_be in the library.He often reads there. A.must B.can't C.needn't D.shouldn't 8.It's snowing heavily,so we-stay at home. A.must B.have to C.may D.can 二、语法填空 1.She_(can)swim when she was five,but now she_(can)not. 9年级沪外版 【寒假专版】 B版考点精讲 2.(could)you please help me carry this box? 3.You (should)eat too much junk food.It's bad for your health 4.He_(must)be at school now;classes start at 8:00 5.We(have to)leave early yesterday because the bus was late. 6.-(may)I borrow your pen? -Sorry,I_(can)not.I need it now. 三、句型转换 1.They must finish the work today..(改为否定句) Theyfinish the work today. 2.You should tell him the truth.(改为否定句) You tell him the truth. 3.The book must be Mary's.(改为否定句) The book_be Mary's. 4.He can speak English well..(改为一般疑问句) -heEnglish well? 5.You ought to follow the rules.(改为同义句) You_follow the rules. 四、篇章填空 Dear Tom, I'm writing to ask for your help.My mom is sick,so I(1.have to)take care of her this weekend.I _(2.can)go to your birthday party on Saturday.I'm really sorry! You-(3.should)tell the others about it,or they might wait for me.By the way,the gift I bought for you_(4.must)be on my desk.Could you please get it yourself? I(5.may)visit you next Sunday if my mom feels better.Thank you for understanding! Best wishes, Li Ming 参考答案 一、单项选择 B2.C3.A4.C5.B6.A7.A8.B 3 9年级沪外版 【寒假专版】B版考点精讲 二、语法填空 1.could;can 2.Could 3.shouldn't 4.must 5.had to 6.May,can 三、句型转换 1.needn't 2.shouldn't 3.can't 4.Can;speak 5.should 四、篇章填空 1.have to 2.can't 3.should 4.must 5.may 4