Lesson2情态动词.ppt

Lesson2情态动词 动词分类 在句子中的作用有无宾语是否是谓语动词分类I在句子中的作用 A 连系动词 be look turn get becomeB 行为动词 read cry make C 情态动词 can may must shouldD 助动词 do does did done 动词分类II有无宾语 A 及物动词 vt raise takeB 不及物动词 vi rise arrive 无被动语态 动词分类III是否做谓语 A 谓语动词 具备人称 数 时态和语态的变化B 非谓语动词 a 不定式b 动名词c 分词 现在分词 过去分词 情态动词的基本概念 情态动词表示说话人的语气和情态 如 需要 可能 愿意和怀疑等 有一定的词义 但不完整 必须和主要动词的原形一起构成谓语动词 常见的情态动词有can could may might must oughtto need dare shall should will would beableto和半情态动词betodo hadbetterdo haveto情态动词除haveto外 没有人称和时态的变化 情态动词的基本用法 Can could1 could是can的过去式2 can常用于否定句或疑问句表示 可能性 Itcan tbetrue Can tyouhelpmewiththebox 3 can用于肯定句表示允许或可能Scotlandcanbeverycold Youcanparkhere Youcan tsmokehere 注意 can和beableto的区别beableto适用的时态比can广 可用于将来时 进行时和完成时 can只用于一般现在时和一般过去时 beableto managetodo succeedindoing努力做到Can表示会 不会 1 IthinkHelenisathome No she heathome forshephonedmefromtheairportjustnow A mustn tB needn tC can tD darednot2 Who itbe ItmustbeMr Wang A mayB mustC mightD can3 What itbe It beacar foritisnotmoving It beahouse A must mustn t canB can can mustC can can t mustD can mustn t must may might1 might是may的过去式2 常用于肯定句和疑问句 表示 可以 MayIcomein Youmaycomeinifyouwish 3 用于肯定句和否定句中 表示不确定 可能 或许Hemayhavegoneabroad Shemightnotbelieveyourstory 4 表示祝愿Mayyoubehappy 5 表示 也 may mightaswell 1 don tthrowthebottleaway It inthefuture A mightbeneededB mayneedC isneededD shallbeneeded should oughtto shall 1 should和oughtto表示有责任 有义务去做2 否定式shouldn t和oughtnotto3 oughtto用于肯定句还可以表示推测Heoughttobetherebynow 4 shall用于第一人称表示决定 决心用于第二人称表示说话人允诺 命令 威胁在疑问句中用于第一 三人称表示征求意见 请求Youshallhavethebooktomorrow Whatshallwedo Shallsheleavenow 1 hecomein Yes please A WillB DoesC ShallD Would2 openthewindowforyou A ShallIB DoyouwantmeC WouldyoumindmeD Wouldyoulikeme3 whendoyouthinkthenewspaperwillcome It tobehereanyminutenow A mustB haveC oughtD will4 Look whatyouhavedone You bemorecarefulnexttime A mayB hadtoC shouldD would Will would 1 would是will的过去式2 will表示情愿 肯Youmaycomeifyouwill 3 will表示习惯动作 倾向Boyswillbeboys Hewouldalwaysbethefirsttoofferhelp 注意would与usedto的区别 都是表示过去的习惯 反复性动作 Usedto说明现在不再重复这一动作 或过去的习惯动作现在不存在 1 Ifyou tothecinemawithme I llbuyaticketforyou A willgoB goC shallgoD oughttogo2 youpleasegetmesomecoffee A CanB WouldC ShouldD Could3 youliketoseeafilm Yes A Would I dliketoB Will IwillC Should IshouldD Would Iwouldliketosee4 ShallIturnonthetelevision No I drathernot televisiontonight A watchingB towatchC watchD watched5 I stayhomethangotothecinema A wouldratherB wouldratherC hadbetterD wouldrather must 1 肯定式 必须 一定要Youmustremembertogotothebanktoday 2 否定式 不准 一定要 万万不可Carsmustn tparkinfrontoftheentrance 3 表示过去 用hadtoIhadtoseethedentistlastweek 4 表推测 一定 准是Theymustbetwins 1 Hurryup Tom forusatthegate A mustwaitB mustbewaitingC canbewaitedD musthavewaited 2 Youshouldgetupearliertomorrowmorning You belateforschoolagain A couldn tB mustn tC won tD needn t3 We changewaterintogas butwe heatittoitsboiling point A must canB may needn tC can mustD need may4 You drinkit itispoisonous A mustn tB maynotC needn tD can t need dare 1 实意动词时Sb need daretodoSb Doesn tneed daretodo2 情态动词时Sb need daretoSb neednot darenotto注意区别 need和dare 1 Lookingatmydeterminedface thebigboy pickafightwithme A daresnotB darenotC doesn tdareD daresnotto2 Sally itifshedoesn twantto A neednotdoB needsnottodoC neednottodoD needsnotdo3 Ican tseetheblackboardverywell Perhapsyouneed A toexamineyoureyesB tohaveyoureyesexaminedC examiningyoureyesD tobeexaminedyoureyes 4 Noone thattohisface A daresayB daresayingC daresaysD daressay5 Thecat hibernateinwinter A don tneedB doesn tneedtoC needsnottoD needsnot6 I goshoppingtoday forthere senoughfoodathome A wouldn tB mustn tC can tD need t 情态动词 havedone表示对过去的推测 May mighthavedone可能已经做了Shouldhavedone oughttohavedone过去该做而实际没做 表责备或遗憾 Shouldn thavedone oughtn thavedone不该做而实际做了Wouldhavedone实际没做Needhavedone需要做而实际没做Needn thavedone不需要做而做了 大可不必 本来不需要 Musthavedone肯定已经做了 一定 想必 准是 没有mustn thavedone Canhavedone很可能已经发生了Couldhavedone很可能已经做了 可以做而没做Couldn thavedone不可能 肯定没做 对过去情况 动作否定的推测 Can thavedone不可能 肯定没做 1 Hewastakenawaybythepolice He forathief A musthavemistakenB musthavebeenmistakenC mustbemistakenD mustmistake2 You havereturnedmynecklacesooner I haveneededit A should mightB might shouldC must shouldD must might3 Heishappy He inhisexamination A mustn thavefailedB shouldn thavefailedC needn thavefailedD couldnothavefailed 4 Theclassroomisempty Ithink tothelibrary A maygoB musthavegoneC mustgoD shouldhavegone5 Therewasplentyoftime She havehurried A wouldn tB needn tC couldn tD mustn t6 Hey LookwhatI vegotforourparty abottleofwine You it Westillhavetwointhecupboard A needn thaveboughtB couldn thaveboughtC needn tbuyD mustn tbuy 情态动词的问与答 CanIuseyourbike Yes youcan Sure goahead MayItakeapicturehere Yes youmay Yes please Ofcourse No youmustn t No you dbetternot MustIleavenow Yes youmust No youneedn t No youdon thaveto NeedIcomenow Yes youmust No youneedn t Wouldyoulikecoffeewithmilk Yes I dliketo No thanks 1 wehandinourworkthisafternoon No youneedn t A NeedB MustC WillD May2 MayIaskyouonemorequestion Certainly you A mightB mayC canD do3 ShallItellJohnaboutit No you I vetoldhimalready A needn tB wouldn tC mustn tD shouldn t4 Wouldyoulendmeyourbicycleforawhile Sorry A Imustn tB youwouldn tC Ican tD I mafraidnot5 He harderwhenhewasyoung A hadbetterstudyB muststudyC shouldhavestudyD shouldstudy 反义问句 mustdo mustn t mustbe isn t aren t usedtodo usedn t didn t havetodo don t doesn t hadtodo didn t musthavedone didn t 1 Itmusthaverainedlastnig