1、情态动词不能单独作谓语，它必须和动词情态动词不能单独作谓语，它必须和动词原形连用一起构成谓语。原形连用一起构成谓语。一、情态动词的情态意义表示法一、情态动词的情态意义表示法考点一：考点一：can可表示现在或将来的能力，可表示现在或将来的能力，意为意为“能；会能；会”。can还可表示请求、允还可表示请求、允许，意为许，意为“可以可以”。如：。如：Gabriella can speak French fluently.Can you help me lift this box?考点二：考点二：could可表示过去的能力；当可表示过去的能力；当could表示允许时，语气比表示允许时，语气比can更加
2、委婉更加委婉和客气。如：和客气。如：Could I have a drink of water,please?考点三：考点三：may表示请求、允许，意为表示请求、允许，意为“可可以以”。如：。如：May I come in and wait?Thank you.You may go now.考点四：考点四：might表示允许时，语气比表示允许时，语气比may更更加委婉和客气。如：加委婉和客气。如：Might I borrow your pen?考点五：考点五：must表示义务、命令或必要，意表示义务、命令或必要，意为为“必须必须”，强调主观看法；表示，强调主观看法；表示“不不必必”，用，用ne
3、ednt。mustnt表示表示“不允许；禁止不允许；禁止”之之意。如：意。如：All passengers must wear seat belts.You mustnt talk to your mother like that.考点六：考点六：have to意为意为“不得不不得不”，强调客，强调客观观需要。如：需要。如：It is getting late.I have to go.考点七：考点七：should意为意为“应该应该”，既可以表示，既可以表示义义务或责任，还可以表示劝告或建议。其否定务或责任，还可以表示劝告或建议。其否定式为式为shouldnt，意为，意为“不应该不应该”。如：
4、。如：You should read his new book.Its really interesting.Children shouldnt be allowed to play in the street.考点八：考点八：had better do sth.意为意为“最好做某最好做某事事”，其否定式在，其否定式在better后加后加not。如：。如：Youd better(not)see the film yourself.考点九：考点九：need表示表示“需要需要”，作情态动词时，作情态动词时，通常用于否定句或疑问句中。通常用于否定句或疑问句中。1.Yuan Longping,a fa
5、mous Chinese scientist,is now doing research on sea rice.If farmers _ start planting rice in salty water,Chinas food supply will surely rise.(2018 广东省广东省)A.can B.cant C.must D.mustnt A2.Look,little Jim is swimming so fast.I _ believe my eyes.(2018 江苏盐城江苏盐城)A.shouldnt B.cant C.mustnt D.needntB3.How a
6、mazing this robot is!Wow,it has video cameras in its eyes,so it _“see”and interact with people.(2018 江苏连云港江苏连云港)A.may B.can C.must D.should4.Could you please speak a little louder?I _ hear you very well.(2018 山东临沂山东临沂)A.cant B.mustnt C.shouldnt D.needntBA5.Can we walk across the road now?No,we _.We
7、have to wait until the light turns green.(2018 湖北荆州湖北荆州)A.couldnt B.neednt C.shouldnt D.mustnt6.Did you see the sign“No swimming”?You _ swim in the river.(2018 湖南湘潭湖南湘潭)A.neednt B.mustnt C.dont have toDB7.Didnt you see the zebra crossing?You _ slow down,son!Sorry,sir.Am I going to fail the test?(201
8、8 江苏无锡江苏无锡)A.cant B.can C.mustnt D.must8.If I want to be an astronaut,how will I get to be one?You _ do well in school and tame your fears.(2018江苏扬州江苏扬州)A.may B.can C.must D.couldDC9.Since you have drunk so much wine,you _ drive your car.（2018山东菏泽）山东菏泽）A.neednt B.wouldnt C.mustnt10._ I have a talk w
9、ith you now?Sorry,Im quite busy.(2018 四川资阳四川资阳)A.Will B.Must C.May D.NeedCC11.I _ go now,or Ill miss my train.(2018 北京中考北京中考)A.can B.might C.mustD.Could12.Why _ we close that chemical factory?Because it has caused lots of pollution.We need better environment.(2018 四川乐山四川乐山)A.must B.can C.mayCA13.You
10、 _ stop when the traffic lights turn red.（2018 重庆重庆B卷）卷）A.cant B.may C.mustD.neednt14.You look so weak!I think you _ go to see a doctor at once.(2018 湖南株洲湖南株洲)A.might B.should C.couldCB15.To keep children away from danger during the coming summer holiday,parents _ give them some safety tips.(2018 江苏
11、泰州江苏泰州)A.should B.may C.could D.might 16.You look so weak!I think you _ go to see a doctor at once.(2018 湖南株洲湖南株洲)A.might B.should C.couldAB17.I dont care what people think.Well,you _.Youre not alone in this world.(2017 河南河南)A.can B.may C.should D.will18.I have travelled a lot.I _ speak four languag
12、es.(2017 河北河北)A.can B.mayC.mustD.needCA19.Mum,may I go swimming now?Yes,dear,but remember that you _ go with your dad.A.mayB.canC.must(2017 福建福建)C二、情态动词表示推测二、情态动词表示推测考点一：考点一：can表示推测时常用于否定句表示推测时常用于否定句中，此时中，此时cant意为意为“不可能不可能”。如：。如：That cant be his mother.Shes not that old.考点二：考点二：could常用于肯定句中，表示不常用于肯定
13、句中，表示不确定的推测，意为确定的推测，意为“可能可能”。如：。如：You could be right,but I dont think you are.考点三：考点三：may表示推测，意为表示推测，意为“可能；也许可能；也许”。如：如：I may be late,so dont wait for me.考点四：考点四：might表示推测时，比表示推测时，比may的可能性的可能性更小。更小。如：如：She might not want to come with us,I guess.考点五：考点五：must表示推测时常用于肯定句中，表示推测时常用于肯定句中，表示很有把握的推测，意为表示很有把
14、握的推测，意为“一定一定”。如：。如：The machine doesnt work.There must be something wrong with it.1.Are you going to the cinema tonight?I dont know.I _ go or I _ stay at home.(2018 河南中考河南中考)A.will;will B.must;must C.should;should D.might;mightD2.I went to Mount Mudang with my five friends in one small car last weeke
15、nd.Oh,my God!I think it _ be an uncomfortable trip.(2018 湖北十堰湖北十堰)A.must B.cant C.may D.shouldnt3.Mum,Ive signed for a big box by Future Express(快递快递).Whats in it?Im not sure.It _ be a present from your brother.(2018 湖北宜昌湖北宜昌)A.might B.must C.should D.willAA4.Look!The man welcoming us at the school
16、gate _ be our headmaster.No,it _ be him.He is having a meeting in the office now.（2018 贵州安顺）贵州安顺）A.must;cantB.must;mustnt C.cant;mustnt D.mustnt;can5.The blue coat _ be Tonys.He never wears blue clothes.(2018 四川内江四川内江)A.can B.must C.cant D.mustntAC6.Look!The woman at the school gate _ be our headmas
17、ter.No,it _ be her.She is holding a meeting in the office now.(2018 四川达州四川达州)A.must;cant B.must;mustnt C.can;neednt D.may;mustntA7.This book _ be Lucys.Look!Her name is on it.（2018 山东青岛）山东青岛）A.can B.may C.must D.might8.Wow.Another gift!Whats in the box?Im not sure.It _ be a pair of sports shoes.(201
18、8四川成都中考四川成都中考)A.must B.may C.willCB9.Jack _ be at home because I saw him in the library just now.（2018 四川德阳）四川德阳）A.cant B.mayC.must D.mustnt10.Mr.Green _ be at home now.He went abroad on vacation last Friday.(2018 四川宜宾中考四川宜宾中考)A.neednt B.mustnt C.cant AC11.Lucy is walking the dog in the park.She _ b
19、e.Listen!She is singing loudly in her room.(2018 湖北孝感湖北孝感)A.cant B.mustnt C.neednt D.wont12.Is the man over there Adam?It _ be him.He has gone to Hong Kong on vacation.(2018 湖南长沙湖南长沙)A.must B.cant C.mustntAB13.She _ be slow,but at least she doesnt make stupid mistakes.(2018 江苏苏州江苏苏州)A.neednt B.may C
20、.cant D.shall 14.Is the man over there Adam?It _ be him.He has gone to Hong Kong on vacation.(2018 湖南长沙湖南长沙)A.mustB.cantC.mustnt BB15.I saw John in the park this morning.It _ be him.He has gone to Hong Kong.(2018 江苏宿迁江苏宿迁)A.cant B.can C.mustnt D.mustA16.Mum,Ive signed for the box.Whats in it?Im not
21、sure.It _ be a present from your uncle.(2017 安徽安徽)A.need B.must C.may D.will17.This pair of glasses _ be Tonys.Hes the only one who wears glasses.(2017 四川成都四川成都)A.mustB.mightC.cantCC16.Is the man in the car John?No,it _ be him.He went to Xian on business yesterday.(2017 吉林长春吉林长春)A.cantB.must C.mustn
22、tD.couldC三、情态动词一般疑问句的回答三、情态动词一般疑问句的回答考点一：考点一：may表示请求时，用于主语为表示请求时，用于主语为第一人称的一般疑问句中，其否定回答第一人称的一般疑问句中，其否定回答不用不用may not，而用，而用mustnt或或cant。如：如：May I use your glasses for a few minutes?No,you mustnt/cant.考点二：考点二：在回答由在回答由must引起的一般疑问句时引起的一般疑问句时,肯肯定回答常用定回答常用must,否定回答常用否定回答常用neednt或或dont have to，表示，表示“不必不必”。如
23、：如：Must we finish this project today?Yes,you must./No,you neednt/dont have to.考点三：在回答由考点三：在回答由need引起的一般疑问引起的一般疑问句时，肯定回答用句时，肯定回答用must，否定回答用，否定回答用neednt。如：。如：Need I bring you a coat?Yes,you must./No,you neednt.考点四：在回答由考点四：在回答由could(表示委婉语气表示委婉语气)引起的一般疑问句时，常用引起的一般疑问句时，常用can/cant回回答。答。1._ I finish my wor
24、k now?No,you _.You can do it later.(2018 黑龙江齐齐哈尔黑龙江齐齐哈尔)A.May;neednt B.Must;dont have to C.Can,couldntB2._ I swim here?Im sorry.Children _ swim alone here.Its very dangerous.(2018 山东滨州山东滨州)A.Must;cant B.May;must C.Can;mustnt D.Cant;can3.May I watch TV,Dad?When your homework is finished,you _.(2018 安
25、徽安徽)A.should B.can C.must D.needCB4.Must I finish reading the book today,Mr.Brown?No,you _.You can finish it in two days.(2018 湖北黄冈湖北黄冈)A.neednt B.mustnt C.cant D.couldntA5.Its too hot._ I swim in the lake?No,you _.Thats too dangerous!(2018 湖北黄石湖北黄石)A.Should;cantB.Need;mustnt C.Must;neednt D.Could;c
26、ant6.Must I do the project on my own?No,you _.You can work with your classmates.(2018 上海中考上海中考)A.neednt B.cant C.shouldnt D.mustntDA7.Must I hand in the survey on the use of bicycle-sharing right now?No,you _.(2018福建福建A卷卷)A.neednt B.cant C.shouldnt8.Must I go out to have dinner with you,Mum?No,you _
27、,my dear.Youre free to make your own decision.(2018 重庆重庆A)A.shouldnt B.mustnt C.neednt D.cantAC9.Must I come here before 6:30 tomorrow?No,you _.There will be plenty of time.(2018 天津天津)A.mustntB.cant C.couldnt D.neednt10.Must I do how now?No,you _.(2018 湖南邵阳湖南邵阳)A.mustnt B.neednt C.shouldnt DB11.Must
28、 you go?Yes.Im afraid I really _.(2018 湖北武汉湖北武汉)A.may B.should C.mustD.canC12._ I park my car here for a while?No,you mustnt.Do you see the sign“NO PARKING”?A.WouldB.May C.MustD.Should(2017 上海上海)B13.May I take the dog with me,sir?_.Pets are not allowed to enter the hall.A.Yes,you may B.No,you mustnt C.Yes,you can D.No,you neednt(2017 重庆重庆)B14.Must I prepare for the trip today?No,you _ prepare for it today.You can do it tomorrow.A.need B.dont need C.neednt(2017 黑龙江哈尔滨黑龙江哈尔滨)C
