高中英语Unit 3 情态动词精品课件新人教版必修3.ppt

grammar modalverbs firstwealthishealth q1 whatshould shouldn twedotokeephealthy q2 whatkindoffoodmustweeattobestrong q3 whatoughtwetoeattostayslim 主要情态动词 can couldmay mightmust havetoneeddarewill wouldshall should oughtto whatmodalverbshaveyoulearned 高考中的情态动词特点 湖北卷完成句子题中07年2题 08和09年未考 高考中的情态动词特点 1 情态动词有一定的意义 只表示期待或估计某事的发生 不能表示正在发生或已经发生的事情 2 没有人称和数的变化 即情态动词第三人称单数不加 s 3 不能独立使用 它和后面的动词构成谓语 4 情态动词除ought和have外 后面只能接动词原形5 情态动词没有非谓语形式 即没有不定式 分词等形式 只作情态动词的can could may might oughtto must 可情态可实义的need dare 可情态可助动词的shall should will would 相当于情态动词的haveto 情态动词的语法特征 1 must need haveto 注意 1 must表示推测时 只能用于肯定句 mustdo对一般时的肯定推测 musthavedone对过去发生的事情作出的肯定判断 mustbedoing对现在的动作进行肯定推测 e g 他们买了一辆新车 他们一定很有钱 theyhaveboughtanewcar theymusthavealotofmoney 他现在一定在看小说 hemustbereadingnovelsnow 路是湿的 昨天晚上一定下雨了 theroadiswet itmusthaverainedlastnight needhestartfromthebeginning yes hemust no heneedn t doesn thaveto 1 作情态动词时 仅用于否定或疑问句 后接动词原形 表 需要 2 need youneedn treturnthebooknow 2 needn thavedone表示做了本不必要做的事情 意为 本不必要 ourcolortvsetisstillgoodenough youneedn thaveboughtanewone 3 作实义动词时 表示 需要 有人称 时态 和数的变化 heneedstofinishitthisevening theclassroomneedscleaning 4 注意对need问句的回答 needifinishtheworktoday yes no no youmust youneedn t youdon thaveto needn t对其它情态动词的回答 shallitelljohnaboutit no you no you mustwedoitnow no you no you needn t don thaveto needn t don thaveto 1表示某人通过努力克服困难做成某事 要用was wereableto 2could might would表委婉语气用于疑问句 答语仍须用can may will 3can用于肯定句中 可表示 有时可能 2 can could 4 can couldhavedone 本可以 本可能做某事 用于肯定句中 表示对过去发生的事情做出的判断 你本来可以考的更好 youcouldhavehadabettermark 5 can couldnothavedone对过去发生行为进行推测 不可能做某事 1 刚才我还看见他了 所以他不可能出国的 isawhimjustnowsohecouldn thavegoneabroad 2 门是锁着的 所以她不可能在家 thedoorwaslocked soshecouldn thavebeenathome 3 may might 注意 might mayhavedone 表示对过去发生的动作进行可能性推测 1 他可能去医务室了 hemayhavegonetotheclinic 2 他可能已经从报纸上知道这个消息了 hemighthavereadaboutthenewsinthenewspaper 1 mayiuseyourpencil yes youmay no youmustn t 2 shemaynotbeworkingnow 3 johnmightbeathomenow 4 helenmaygoonthetripwithus butsheisn tverysureyet 5 shemay mighthavereaditinthepaper 6 hemaynothavefinishedreadingthebook 4 will would 5 shall should和oughtto youshalldoasisay 命令 1 在陈述句中 shall用于二 三人称表示允诺 警告 命令 决心等 shalliopenthewindowforyou 征求意见 2 在疑问句中 用于一 三人称 用来表示请求或征求意见 注意 tellhimthatheshallhavethebooktomorrow 允诺 nothingshallstopmedoingit 决心 shallhefetchsomewaterforyou 请求 youngpeopleshouldlearnhowtousecomputers 3 should常表示劝告 建议 命令 与oughtto意义相近 但oughtto多表示责任 义务 语气强烈 everycitizenoughttoobeylaw yououghtnottogo youshould oughttohavetoldherthetruthearlier sheshouldn thaveleftwithoutsayingaword 4 should oughttohavedone表示责备或批评 意为 本应该 但 oughtto的语气更强烈 用于否定则表示 本不该 但 5 should用于可能性推测时 表 应该 很可能 theyleftat5 30 theyshouldgettherenow 1 作为情态动词用 常用在否定句和疑问句中 dare need s vs daren t needn t v idaren twalkthroughtheforestatnight dareyouwalkthroughtheforestatnight youneedn treturnthebooknow needhegoyesterday 六 可兼做行为动词的情态动词 need dare 2 作实义动词用 常用在肯定句中 有人称 时态 和数的变化 heneedstogotherehimself hehasgrownup sowedon tneedtoworryabouthim 3 sth sb need want request doing tobedonethehouseneedscleaning tobecleanedtheboyneedssendingtothehospitalatonce 表示推测 情态动词的重要用法 肯定的推测可能的推测否定的推测疑问的推测 must 对将来对现在对过去 情态动词 may might can t couldn t can could v v havedone常见mustbe bedoing v v havedone bedoing可以用not表示 可能不 v v havedone bedoing v v havedone bedoing exercises i trytoexplainthemeaningsofthemodalverbsinthefollowingsentences 1 hecanspeakenglishwell 2 youcangohomenow 3 thatcan tbetrue 4 couldyoupleaseshowmethewaytobeihaipark 5 theyhuntersarelost theycouldstarve 6 mayicomein 7 hemaygiveyousomehelp ability permission guessing request possibility permission possibility 8 don tworry iwillhelpyou 9 oftenhewoulddressuplikearichman 10 wouldyouliketojoinusfordinner youshallhavetheticketassoonasigetit youshouldarriveattheairporttwohoursbeforehegoes itisfiveo clock heshouldturnupsoon wangfengwinsanawardeveryyear hemustbestrong promise pasthabit request promise prediction advice speculation 2 用情态动词完成句子1 you vebeenworkingallday you beverytired 2 thedoorbellrings iwonderwhothatis it belisa she sstillinthelibraryatthistime 3 itisalongtimesincewemetlasttime you comeandseeusmoreoften must can t should 4 ihaven tdecidedwherei mgoingformyholidays i gotoaustralia 5 myfather sbirthdayisccoming what igivehim 6 whydon tyoutryonthisdress it lookniceonyou may shall will 7 whowasthemantalkingwithyourteacher i mnotsure it beherbrother 8 idon tknowwhentheguests behere they arriveatanytime might will could 3 完成下列句子 1 idon tknowwheresheis she 可能在武汉 be 2 atthismoment ourteacher 想必在批改 ourexampapers mark grade 3 theroadiswet it 一定下雨了 lastnight rain 4 yourmother 一定一直在找你 look maybeinwuhan gradingmustbemarking musthaverained musthavebeenlookingforyou 5 philip seriouslyinthecaraccident 可能受了重伤 hurt 6 lindahasgonetowork butherbicycleisstillhere she 可能走了 bybus go 7 mike 一定还没有找回 hiscar forhecametoworkbybusthismorning may might havebeenhurt may might havegone can thavefound 4 multiple choice 1 isn tthatann shusbandoverthere no it behim i msurehedoesn twearglasses 04全国i29 a can tb mustnotc won td maynot2 i lltellmaryabouthernewjobtomorrow you herlastweek 04福建32 a oughttotellb wouldhavetoldc musttelld shouldhavetold3 ioftenseelightsinthatemptyhouse doyouthinki reportittothepolice 04广西21 a shouldb mayc willd can4 mr white at8 30forthemeeting buthedidn tshowup 04广西27 a shouldhavearrivedb shouldarrivec shouldhavehadarrivedd shouldbearriving5 excuseme isthistherightwaytothesummerpalace sorry iamnotsure butit be 04湖北26 a mightb willc mustd can 6 excuseme butiwanttouseyourcomputertotypeareport you havemycomputerifyoudon ttakecareofit 04湖南28 a shan tb mightnotc needn td shouldn t7 idon tmindtellingyouwhatiknow you i mnotaskingyouforit 04江苏22 a mustn tb maynotc can td needn t8 mum i vebeenstudyingenglishsince8o clock igooutandplaywithtomforawhile no i mafraidnot besides it srainingoutsidenow 04辽宁29 a can tb wouldn tc maynotd won t9 you betired you veonlybeenworkingforanhour 04全国ii29 a mustnotb won tc can td maynot10 childrenunder12yearsofageinthatcountry beunderadultsupervisionwheninapubliclibrary 04上海28 a mustb mayc cand need 11 whoisthegirlstandingoverthere well ifyou know hernameismabel 04天津31 a mayb canc mustd shall12 i paytracyavisit butiamnotsurewhetheriwillhavetimethissunday 04浙江26 a shouldb mightc wouldd could13 theinterest bedividedintofiveparts accordingtotheagreementmadebybothsides declaredthejudge 04重庆24 a mayb shouldc mustd shall14 hepaidforaseat whenhe haveenteredfree 05年山东34 a couldb wouldc mustd need15 he havecompletedhiswork otherwise hewouldn tbeenjoyinghimselfbytheseaside 05年北京26 a shouldb mustc wouldn td can t 16 i havebeenmorethansixyearsoldwhentheaccidenthappened 05年天津14 a shouldn tb couldn tc mustn td needn t17 i vetakensomeoneelse sgreensweaterbymistake it harry s healwayswearsgreen 05年广东33 a hastobeb willbec mustn tbed couldbe18 tomisneverlateforwork whyisheabsenttoday something tohim 05年江西22 a musthappenb shouldhavehappenedc couldhavehappenedd musthavehappened19 theworldwidewebissometimesjokinglycalledtheworldwidewaitbecauseit beveryslow 05年浙江9 a shouldb mustc willd can20 lucydoesn tmindlendingyouherdictionary she i vealreadyborrowedone 05年湖南24 a can tb mustn tc needn td shouldn t 21 thiscakeisverysweet you alotofsugarinit 05年辽宁26 a shouldputb couldhaveputc mightputd musthaveput22 iwasonthehighwaywhenthiscarwentpastfollowedbyapolicecar they atleast150kilometersanhour 05年重庆33 a shouldhavebeendoingb musthavebeendoingc couldhavedoned wouldhavedone23 tom you leaveallyourclothesonthefloorlikethis 05年全国i26 a wouldn tb mustn tc needn td maynot24 didyoutelljuliaabouttheresult oh no iforgot i hernow 05年全国iii8 a willbecallingb willcallc calld amtocall25 john lookatthetime youplaythepianoatsuchalatehour 05年全国iii19 a mustb canc mayd need 26 helen goonthetripwithus butsheisn tquitesureyet 05年安徽26 a shallb mustc mayd can27 catherine ihavecleanedtheroomforyou thanks you it icouldmanageitmyself 05年福建31 a needn tdb needn thavedonec mustn tdod shouldn thavedone28 there beanydifficultyaboutpassingtheroadtestsinceyouhavepracticedalotinthedrivingschool 05年上海27 a mustn tb shan tc shouldn td needn t29 someaspectsofapilot sjob beboring andpilotsoften workatinconvenienthours 06湖南32 a can havetob may canc haveto mayd oughtto must30 theweatherturnedouttobefineyesterday i thetroubletocarrymyumbrellawithme 06江西24 a shouldhavetakenb couldhavetakenc needn thavetakend mustn thavetaken 31 there snolighton t