情态动词专项复习.ppt

1,Revision for Modal Verbs,九年级,2,中考英语专项复习情态动词,概念：情态动词是表示情态意义的动词，他表示说话人的语气和情态，它不能单独作谓语，必须与实义动词一起构成谓语，情态动词没有人称和数的变化，过去式通常表示更客气、更委婉。I can speak English.He can speak English.They can speak English,too.Can you help me?/Could you help me?,3,表示可能、怀疑、允诺、愿望、义务、必要、猜测等的动词是情态动词。,情态动词,4,初中阶段必须掌握的情态动词：,can could may might will would must have to need had better should 所有的情态动词后面都接动词原形.Eg:I can swim.He has to go now.,5,1.can 表能力，能够,会,Eg:1.I can speak English well.2.Can 表允许、请求 Can you tell me how to start the machine?3,can 用来表示否定推测和疑问推测 Eg:1.That cant be our English teacher because she has gone to Shanghai.2.Can it be true?4.could为can的过去式，用法与can类似，常用于过去时中；could还可用于现在时中表示委婉客气，相当于can；could也可表示惊讶怀疑，不相信，,6,2.May 允许，请求，可以 Eg:You may go with me.-May I borrow your pen?-Yes,you may.No,you _ 推测，可能性，可能，也许 It may rain.,mustnt.,此外,may 表示可能时注意和 maybe 的区别 maybe 可能(副词),不能做谓语,常在前面 Eg:Maybe you know the old man.=You may know the old man.may 常放在句中,和动词原形一起做谓语 1)I dont know._he can tell you.2)I dont know.He _tell you.,Maybe may,7,3.must 必须 mustnt 严禁,禁止,不许 Eg:I must learn how to work.You mustnt play in the street.-Must I finish the work now?-Yes,you must.No,you neednt/dont have to(不必）.此外 must 用于肯定推测,表示 肯定是 Eg:The book must belong to him because we can see his name on it.,8,4.need(需要)既可做实义动词也可做情态动词实义动词 need to do sth 需要做某事 Eg:I need to buy a big house.-Do you need to buy a big house?-Yes,I do.No,I dont.He needs to borrow a map.-Does he need to borrow a map?2)情态动词 need do sth 需要做某事 Eg:I need buy a big house.,9,5.have to 不得不 Eg:Its eleven oclock.I have to go now.He has to finish the work first.请注意:I dont have to go now.He doesnt have to finish the work first.have to 和 must 的区别:have to 表示客观因素 Eg:We are very glad at the party,but its 11,so we have to leave now.must 表示主观因素 Eg:We must study hard to find a good job for ourselves.,10,6.Youd better do sth 你最好做某事 Eg:Youd better buy the book.Youd better not do sth 你最好不要做某事 Youd better not run in the classroom.,11,考点一：情态动词基本含义,can(could)能，会 may(might)可以，可能 will(would)将，会，愿意 must 必须have to不得不 need 需要 sb need to do sth,sth need doing.should应该had better 最好 had better(not)do sth,12,1.-_ you speak Japanese?(北京2008）-No,I cant A.Can B.Must C.May D.Should2.You _ stop when the traffic light is red.(山西）A.can B.may C.must D.need3.LiLei cant go hiking with us today.Because he_take care of his sick mother.(温州）A.has to B.may C.mustnt D.need t,A,C,A,Lets do,13,考点二：表猜测语气的情态动词,表猜测性的情态动词有：may，cant，must。may表没把握的猜测。cant 表有把握的否定猜测。must 表有把握的肯定猜测,14,1.The light in the office is off.The teacher _be there now.（南通）A.may B.cant C.mustnt D.must2.His parents bought him a large house.It _be very expensive（宁夏）A.must B.can C.mustnt D.cant,B,A,Lets do,15,考点三：情态动词开头的疑问句的答语,16,1.Must I take the keyboard to the office now?-No,you _.You can do it later.A.mustnt B.cant C.dont D.neednt2.May I take this book out of the reading room?-No,you _.You must read it here.A.may not B.dont have to C.mustnt D.neednt,D,C,Lets do,17,考点四：易混词的辨析,（一）must 与have to We _study hard.We _stay at home because it is raining.提示：must 表主观看法，意为“必须”。have to表客观需要，意为“不得不”（二）maybe与may be _he is right.It_ rainy tomorrow.提示：may 为情态动词后接动词原形。Maybe为副词意思为“大概，也许”,must,have to,Maybe,may be,18,考点四：易混词的辨析,（三）can与be able to I_ speak English now.My sister _speak English two years ago.My brother _ speak English in the future.提示；can 只有现在和过去时（could）be able to可用于任何时态中。（四）cant 与mustnt cant 表“不可能”。mustnt表“禁止，不许”。,Can/am able to,could/was able to,will be able to,19,1（2009.德州)-How is your friends coming?-Im not sure.He _drive here.A may B.can C.must D.will 2(2008.江西)If the traffic is red,you _cross the road.Its very dangerous.A dont B.mustnt C.neednt D.wouldnt,boys against girls,A,B,20,3.(2009.江西)-Susan has bought a large house with a swimming pool.-It _be very expensive,I never even dream about it.A must B.might C.cant D.shouldnt4.(2009.襄樊）-Must I get up before six oclock tomorrow morning,Dad?-No,you _.Tomorrow is Saturday.You may get up later.A mustnt B.cant C.needn t D.may not,A,C,21,5.(2010 江西）-How was the youth club last night,Mark?-It was great fun.You _come.A must B.can C.should D.may 6.（2006.威海）He needs _her the truth,the flowers need_.A.to tell,watered.B tell,to water C.tell,watered D to tell,watering,C,D,22,7.（2008.上海）-would you like to come to my birthday party?-Id love to.But I _look after my sister.A.must B.can C.have to D.need to 8.(2009.成都）-what would you send to your sister as the Chritmas gift?-I havent decided yet.I_ send her a hand bag.A.shall B.may C.need D.must,C,B,23,9.(2009.天津）-shall I tell Bob the news?-No,you _,Ive told him already.A.shouldnt B.wouldnt C.mustnt D.neednt10.(2007.武汉）wed better _at home.The sun is shining.A.stay B not stay C.staying D.not staying,D,B,24,11.(2009绍兴）-could you please come to the Museum with me this afternoon?-sorry,I_.I have to take a piano lesson.A.couldnt B.mustnt C.cant D.neednt 12.(2008.河南）-_ I go swimming with Dad,Mom?-No,you neednt.You can stay at home.A.May B.Should C.Must D.Would,C,C,25,考点总结,1,单词的意思2情态动词的答语3表猜测的情态动词may,cant,must.4易混淆的情态动词 can与 be able to；have to与 must；maybe与 may be；cant mustnt注意：need的用法；had better 的用法。,26,1.-Mum,may I watch TV now?-sure,but you _help me with my English.A.can B.may C.must D.could2.Alice,please be quiet!The others _hear clearly.A.cant B.neednt C.shouldnt D.mustnt,Homework,C,A,27,3.-Whos that under the tree?Is it Jenny?-It _be Jenny.Shes ill in the hospital today.A.cant B.must C.may D mustnt4.-Must I finish writing the article now,sir?-No,you _.But you must finish it before next class.A mustnt B.may not C cant D.neednt,A,D,28,Thank you for listening！,