5.1系动词助动词情态动词

系动词助动词情态动词

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5.1系动词助动词情态动词的全部内容系动词、助动词、情态动词

一、情态动词1can（could）能够、可能、可以；may（might）:可以、可能；must必须；sha II将会;should o应该；will将会,愿意;would:将会

2.半情态动词（后接动原，但否定和疑问句要借助do）have to不得不，had better最好，usedto

3.情态动词无三单（have to除外）；不能单独使用，后接动词原形共同构成谓语need既可做实义动词又可做情态动词（作实义动词，后接to do/doi ng,否定don t need todo4odo/doing;作情态动词，后接动词原形，否定needn tdo）5o表推测must be一定是（语气最肯定），can be可能是，may be也许是（语气最不肯定）；can5t be一定不是（语气最肯定,must be的否定形式）maybe也许（副词，常用在句首）；may be也许是（谓语动词，用在句中）6o

7.must与need开头的一般疑问句，肯定回答用must,否定回答用neednJ t/dont haveto（不必）.

8.may开头的一般疑问句，肯定回答用may/can,否定回答用can t/mustn

二、系动词to1o系审］词后可接形容词_

2.表示状态的系动词be（am,i s,are,was,were,been）,keep,stay,表示感觉的半系词feel动（摸起来，感觉），look（看起来），smel I（闻起来），sound（听起）,taste（尝起来）；来、助动词三助动词本身无词义或意义不完整，必须和实义动词共同构成谓语…

2.常用的助动词be（am,i s,are,was,were,been,being）用于进行时态或被动语态；do（does,did）用于一般现在时或一般过去时的否定句和疑问句；have（has,had）用于完成时态;will,shaI I,would,should用于将来时态,sha II/should只能用于第一人称情态动词与系动词练习题

一、基础题1o——Where5s MrLee I have someth i ngunusuaI totell hi m.-You f i ndh im.He Japan.A may not；has goneto B.may not；has beento C.cant；has goneto D.cant；has beenoto2一Finish drawinga horsei nten minutes.OK一Sorry.It i n sucha shorttimeomay doB.can5t bedone mustdo D.needn11be doneAoCoI havemy ownroom inmy house,so Ido whatI wantin it.3omust haveto C.need toD.canAo Boyoumend mycar Inot startit4oWould；wouId Must;must CoCan;can D.May;mayAo Bosher ide whenshe wasthree yearso Id5oA.Can B.CouId C.Need DMayoThe boyanswer th i sk i nd ofhard questi onsone yearago.6ocan maycouIdAo BoCo7Who i s the man overthere Is it MrLi-No,it behimMr Lii smuchOta II er.A.mustn5t B.may not C.can5t Dneednto8-Li sten!Someone i s singing i nthe nextroom Whoit beI sit WeioFang1O-Noo It be her□She i s atschoo Inow.-I sMr Huinthe read i ng room—No,he bethere.He hasgone toAowill；may not B must;mustnJ t C.may;can11D.may;won5toTianj inoAo mustnt B.neednt Cowont D.can5t10o youpass mea penI*d liketo wr i tedown theteI ephonenumberoAo NeedB.CouId C

二、提Must DoShou Ido

1.—May Igo tothe ci nema,Mum-Certa inly.But yoube backby11o cIockoAo can Bomay Comust D.need disease一Yes,

2.—SARS i s sucha terri bIei SoWe bemore carefuI.it高题Ao can B.may Comust DneedoTo makeour citymore beauti fuI,rubb i sh into theriver.

3.neednt bethrown B mustn1t bethrownCo cantthrow Dmay notthrowA.o oThesebooks outof thereadi ngroom.You haveto readthem here.

4.can5t takeBmust be takenCo can take D.mustn5tbetaken

5.Cars,buses andb i kes stopA.owhen traff i c I i ghts changeto redoAo can Bomay Comust D.need6o一Can yougo swimmingwith usthi safternoon-Sorry,I can5t□I takecare ofmy Iitt Iesi ster athome becausemymother is ill.A.can B.may CwouId Dhave tooo

7.-Must Ifinish thework beforefive oclock—No,youA.neednt Bmustnt C.have too

8.一I comeback beforefive oclock-No,you oBut yoube backI aterthan sevenoc I ockoA.Need;must;mustn5t BMay；mustn1t;can1t C.Can；cant;cant DMust;neednt；can5to o

9.一Must IcIean theroom rightnow-No,you YoucIeani tafterIunchoA.needn5t；can Bneednt;may Comustn5t；canD.mustn5t；mayo10o Susansparents havebought alarge housewith aswimming poolIt be veryoexpensive.A.must B.can Comustn5t D.can5t11o Thisbook Lucy5s.Look!Her nameison the book cover0A.mustbeB maybe Ccant beD.mustnt beoo12_Ihaveyour name,p Iease—Yes,M ichae IM—I—C—H-A-E-LO oA.Must BoWi II CoMay DNeed13o-May Igo tothe ci nema,dad-No,you Youmust finishyour homeworkfirstA.mustn5t Bwon5t Codont Do needn5to

14.一May Ismoke here一,you Itcan bedangerous.Ao Yes;can BNo;can5tC.Yes;may DoNo,neednto

15.You goand askMe imei.She knowthe answer.Ao must；canBmust；may C.need;can Dcan;mayo o

16.Look out!The knife is verysharp Youcut yourfi nger.oA.need B.must Coshould Dmayo

三、巩固

1.A teacherdo everyexerc ise,but apup iI.A needn1t;must Bmay not；must Cneedn t;needn5t Dcant；must

2.You tothe meeti ngthi safternoon if youhave somethi ngimportant todoA needn5t tocome Bdont needcome Cdon5t needcoming Dneedn1t come3o一CouId IIook atyourpictures一Yes,of courseyou.A.couId Bocan C.wi II D.might4o He some timeto restbecause hefee Isthirsty andhungryoA.need B.needs Coneed i ng Doneeded

5.I acar,thebikeisgood forme.Ao don5t needbuy Bdon5tneedto buyC.neednt tobuy D.needn5t buyingo

6.-Someone is knockingat thedoor Whoi tbeo-It beTom Heis still inthe schooIooAo can；can5t Bcan;mustn5tC.might;could Dmight;mayo o7He runa tra inwhen hefin ishes histrain ingin thatco IIegeO oA.can Bowi II canCo is abIe to B.wi II beabIe to

8.Hesing30songs whenhe wasf ive.Ao canBo havecouId C.has beenabIe toD.had beenabIeto9Mr Wangbe in Nanjingnow,he wentto Beijingon Iythis morni ngOoAo mustn5t B.may notC.can t Doneedn5t

10.-Must Istay athome,Mum----------No,you.A.needn5tB.mustn5tC.don5tD.may not11o------------------themanthere beour newteacher-----------------He be,but15m notsureoA.May；mustn5tBCan;may C.Must；cantD Can；can1to o12o Eventhe topstudents can5t workout thisprob Iem.So itbeverydifficult.AocanB.may C.must D.need

13.It5sstillear IyYou.oAo mustn5t hurryB wouIdn5t hurryCmaynothurry D.don5t haveto hurryoo。