高中英语人教版必修3课件：《Unit 2 Healthy eating》period 2

HealthyEatingperiod2,LearningaboutLanguage,WarmingUp,Preparefor“discoveringusefulwordsandexpressions”onpage12.Ex1.lie2.getawaywith3.raw4.curiosity5.customer6.benefitEx2.2.oughtto4.diet5.raw8.balanced9.energetic10.slimbecomethinner—loseweight3.beinglaughedatbyherfriends—losingface6.feltsosadandhopelessaboutherself—loseheart7.wasunwillingtovisitanymore—loseinterestinvisiting,Preparefor“Discoveringusefulstructures”onpage13.Ex2.oughtto;shouldn’t;needn’t;don’thaveto/needn’t;will2.haveto;mustn’t3.oughtto;should,Presentation,Grammar,主要情态动词Can,couldMay,mightMustOughttoNeedDare,dared,can表能力：Icanreadveryfast.表客观可能性：Marycan’tbetheleader.表允许：Youcantakeitaway.表怀疑：Howcanyoufinishit?,could表能力/可能性：Couldyoufinishitsoon?表怀疑：Hecouldnotbe50.委婉地提出问题：Couldyoushowmethepassport?用于虚拟：Ifyouhadcome,youcouldhavegotawonderfulgift.,may询问或说明可不可以做：MayIaskyouaquestion?表可能会发生：Hemaygetangry.表目的或让步的从句：Comehereintimesothatyoumayseethesinger.,might表可能的事：（同may）表目的从句：（同may）用于虚拟：Ifyouhadfinishedit,thebossmighthavegivenyousomepromotion.,must表必须做的事：YoumusthandinyourhomeworkthisFriday.表揣测：Itmusthaverainedlastnight.表“偏偏”的意思：Hemustgetafeverwhenwewerereadytogetoff.,oughtto表应该做的事：Yououghttodoitcarefully.表非常可能的事：Heoughttobeherebynow.,need表需要；主要用于否定句或疑问句：Weneedn’thurry.可用于否定意思的句子：Idon’tthinkyouneeddoit.作及物动词，和不定式连用：Hedidn’tneedtosaythattoher.,dare表“敢于”，主要用于疑问句、否定句和条件从句：Hedarenottellhimthenews.作及物动词，与不定式连用：Wedon’tdaretoenterthehouse.,shall用于第一，三人称疑问句，征求意见或请求shall第二，三人称陈述句,命令,警告,允诺,威胁should表劝告，建议，命令，顺理成章oughtto表应该，语气＞should美语中，oughtto用于否，疑句时to可省。多数情况下，oughtto可与should互换使用。疑问句中常用should代替oughtto。Oughtto的反意疑问句用shouldn’t替代。Oughtto表示“想必会”时语气较must弱。shall,should&oughtto,你最好不要抽烟了。Youshould/oughttostopsmoking.YououghttohavehelpedhimwithhisEnglish,________?won’tyouB.oughtnotyouC.shouldn’tyouD.wouldn’tyou他们想必已到那儿了。Theyoughttobetherebynow.(语气较must弱),比较hadbetter,should&oughtto三者均表示建议，意为“应该”，“应当”或“最好做…”.三者的语气程度为渐强。hadbetter指一般性的建议，最弱。should&oughtto含义相近，常可互换。区别在于，oughtto常指特殊情况下的“应当”。Should则指一般情况。见例句。Yououghttohelphimbecauseheisintroublenow.(语气强，有命令意味。)Youshouldhavearestafterfinishingyoursports.（一般性建议）,havetohaveto表示客观需要去做的事情，意为“必须，不得不。”Ihavetogetthestationearlytocatchthefirsttrain.Wemissedthebussowehadtowalkhome.Wehavetoovercomeallkindsofdifficulties.,Haveto有多种时态。常见的有：一般将来时Wewillhavetogatherattheschoolgateat7tomorrow.一般现在时Ihavetotakemoremoneywithmebecausemygirlfriendhassomuchtobuy.一般过去时Finally,wehadtogiveupourideatoholdapicnicoutsideasitrainedforawholeafternoon.haveto（考点）,Musttheydo…?Yes,theymust.No,theyneedn’t/don’thaveto.must&havetomusthaveto主观／客观主观客观时态现在，将来多种表推测√×询问意愿√×否定意禁止，不允许不必,must表主观意志，而haveto表由于客观因素不得不做完成的事情。Must没有过去式，除在间接引语中可表示过去的时间。在直接引语中表示过去的时间用hadto代替。Itoldherthatshemustgiveupsmoking.Shesaid,“Wehadtogeteverythingreadythatnight.”比较must&haveto,NeedIdo…?Yes,youmust.No,youneedn’t.dare&need情态动词实义动词dare否，疑，条darenotdo否,疑don’tdaretododon’tdaredo不用于肯定句肯：daretodoneed否，疑needn’tdo(don’t)needsth(don’t)needtodo肯：must,haveto,oughtto,should,注意对need问句的回答:--NeedIfinishtheworktoday?--Yes,________________.No,________________.No,________________.youmustyouneedn’tyoudon’thavetoneedn’t对其它情态动词的回答:--ShallItellJohnaboutit?--No,you__________.--No,you__________.--Mustwedoitnow?--No,you__________.--No,you__________.needn’tdon’thavetoneedn’tdon’thaveto,Exercises,高考链接1.--IsJohncomingbytrain?--Heshould,buthe____not.Helikesdrivinghiscar.(高考真题）A.mustB.canC.needD.may2.Ithasbeenannouncedthatcandidates(候选人)____remainintheirseatsuntilallthepapershavebeencollected.(高考真题）A.canB.willC.mayD.shall3.--Iheardtheywentskiinginthemountainslastwinter.(高考真题）--It____truebecausetherewaslittlesnowthere.A.maynotbeB.won’tbeC.couldn’tbeD.mustn’tbe,Practice1:高考考题专练1.Ithoughtyou_____likesomethingtoread,soIhavebroughtyousomebooks.A.mayB.mightC.wouldD.must2.Whereismypen?I____it.A.mightloseB.wouldhavelostC.shouldhavelostD.musthavelost3.Ididn’thearthephone.I___asleepA.mustbeB.musthavebeenC.shouldbeD.shouldhavebeenBDB,4.---Therewerealreadyfivepeopleinthecar,buttheymanagedtotakemeaswell.----It____acomfortablejourneyA.can’tbeB.shouldn’tbeC.mustn’thavebeenD.couldn’thavebeen5.It’snearlyseveno’clock.Jack___behereatanymoment.A.mustB.needC.shouldD.couldDC,6.---Didthetrainarriveintime?----No.It_______twohoursago.A.musthavearrivedB.oughttohavearrivedC.mustarriveD.oughttoarrive7."MustIdrivetohishouseandpickupthechildren?""No,."A.youshouldn'tB.youmightnotC.youneedn'tD.youmustn'tBC,8.Wedidn'tseeTomatthemeetingyesterday.Heit.A.mustn'thaveattendedB.cannothaveattendedC.needn'thaveattendedD.wouldhavenotattendedB9.Thereissomeoneknockingatthedoor.itbeTom?A.can B.must C.should D.oughttoA,10.Twoyearsago,myhusbandboughtmeabicycle.Ifyouliveintown,itisoftenfasterthanacarandyouworryaboutparking.A.mustnot  B.maynotC.shouldnot  D.don'thavetoD11.You_____suchalongcomposition.Theteacheronlyaskedfor300words.Youhavewritten600.A.mustn’thavewrittenB.couldn’thavewrittenC.needn’thavewrittenD.donothavetowriteC,ConclusionWriteadifferentendingtothestoryComeAndEatHere(1)