《MU Healthy eating Grammar人教必修三语法点.pptx》由会员分享，可在线阅读，更多相关《MU Healthy eating Grammar人教必修三语法点.pptx（36页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、第1页/共36页第2页/共36页Tolearntheuseofmodalverbs第3页/共36页Underline the sentences containing modal verbs in the reading passage and use the function words below to explain the meaning of the modal verbs.Intention Duty Permission Possibility Guessing Abilitypossibilitypossibilitypossibilityguessingpossibility
2、第4页/共36页intentionabilitydutyintentiondutypossibilitypossibilityabilityModalverbsareusedtoexpressthespeakersmeaningofintention,duty,permission,guessing,ability,etc.第5页/共36页1.should和oughttoa.should,oughtto都可表示“应该”。oughtto用于表示按道理应当，常指客观的义务或责任，大多数情况下可用should代替，但比should语气重。e.g.Ishouldhelpherbecausesheisi
3、ntrouble.Yououghttotakecareofthebaby.第6页/共36页b.表示劝告、建议或命令时，should和oughtto可通用，但在疑问句中常用should。oughtto的否定式为oughtntto或oughtnotto。e.g.Youshould/oughttogotoclassrightaway._Iopenthewindow?我可以开窗吗？Whatshouldwedonext?Should第7页/共36页Yououghtnt/oughtnotto(oughtto)leaveinsuchahurry.你不应该离开的这么匆忙。第8页/共36页c.should,ou
4、ghtto都可表示推测。e.g.Heoughtto/shouldbehomebynow.Thisiswheretheoiloughtto/shouldbe.should和oughtto后面跟动词不定式的完成式,其肯定句表示“过去应该做而未做”,其否定句则表示“过去不该做但做了”。第9页/共36页You_thedecisionaweekago.你应该在一周前就做决定。I_suchafoolishmistake.我不应该犯这样愚蠢的错误。多数情况下，oughtto可与should互换使用。oughtto的反意疑问句用shouldnt替代。should/oughttohavemadeshouldnt
5、havemade第10页/共36页YououghttohavehelpedhimwithhisEnglish,_?A.wontyouB.oughtnotyouC.shouldntyouD.wouldntyou第11页/共36页2.must和havetomust的用法1)表示主观的义务和必要,主要用于肯定句和疑问句,意为“必须，得，要”；由must引起的疑问句，肯定回答要用must或haveto,否定回答要用neednt,donthaveto,意思是“不必”。第12页/共36页must的否定形式mustnt表示禁止，意思是“不能，不许”。如：MustIfinishthetaskrightnow?
6、我现在必须完成这个工作吗？Yes,youmust./Yes,youhaveto.是的。(No,you_./No,youdonthaveto.不，不必。)Youmustntcomeherewithoutpermission.未经允许，你不能来这儿。neednt第13页/共36页haveto的用法1)must表示一种主观的需要，而haveto表示一种客观的需要，意思是“不得不”。如：Ihavetoattendanimportantmeetingthisafternoon.今天下午我必须要参加一个重要的会议。Motherisout,soIhavetolookaftertheshop.妈妈不在家，因此
7、我不得不照看商店。第14页/共36页2)haveto的否定形式是donthaveto,相当于neednt。如：Theydonthavetobuyacomputeratpresent.他们目前没有必要买电脑。第15页/共36页haveto的第三人称单数形式是hasto，一般过去式是hadto，一般将来式是willhaveto。e.g.LiHuahastopassanexaminationbeforehecanstartwork.Mycarwasbroken,soIhadtowalkhome.ItllhavetobeonaSunday.Illbeworkingeveryotherday.第16页/
8、共36页Thebosshasgiveneveryoneaspecialholiday,sowe_gotoworktomorrow.A.cantB.mustntC.needntD.shouldnt【点拨】考查情态动词。根据题意,可知这里表示“没有必要”,故只能选C项。第17页/共36页Whatdoyouthinkwecandoforouragedparents?You_doanythingexcepttobewiththemandbeyourself.A.donthavetoB.oughtnttoC.mustntD.cant【点拨】根据题意“除了和他们呆在一起做你自己外,没有必要做任何事情。”可
9、知这里选择donthaveto表示“不必”。故选A项。第18页/共36页3.must和needa.need作情态动词时,只能用于疑问句和否定句。构成否定句和疑问句时不借助于助动词do。NeedIfinishtheworktoday?Yes,youmust./No,youneednt.第19页/共36页b.must的肯定形式表示“必须”，否定式表示“禁止、严禁”。Youmustcomehere.Youmustnttakethebookawayfromthelibrary.第20页/共36页Choosesuitablemodalverbsbelowtocompletethefollowingdia
10、logues.ought/oughtnttoshould/shouldntwillmustntneednt(dont)havetocan/cant1.Sam:HowcanIgrowthinner,Mum?Mum:Well,you_eatfoodwithplentyoffibrethathelpsyoudigestbetter.Andyou_stopdrinkingcolaoreatingsweetfood.havetoshould第21页/共36页Sam:DoesitmeanI_eatmyfavouritefriedchickenanymore?Mum:Notexactly,ifyoulove
11、friedchicken,you_giveitup.Justeatitlessoften.You_worrytoomuch:alittlefriedchicken_doyougood!shouldntneedntdonthaveto/neednt/shouldntwillought/oughtnttoshould/shouldntwillmustntneednt(dont)havetocan/cant第22页/共36页2.Doctor:Youaresickbecauseyouveeatenpoisonousmushrooms.Wheredidyougetthem?Lucy:Ipickedthe
12、mintheforest.Iknowwe_eatfreshvegetables.Doctor:Oh,butyou_eatthemuntilyouresuretheyarenotpoisonous.Lucy:Thankyou,doctor.Illbemorecarefulnexttime.havetomustntought/oughtnttoshould/shouldntwillmustntneednt(dont)havetocan/cant第23页/共36页3.Charles:IwishIcouldseethingsclearlyinthedark.Tom:Eatingcarrots_help
13、youseebetter.You_eatsomeeveryday.oughttoshouldought/oughtnttoshould/shouldntwillmustntneednt(dont)havetocan/cant第24页/共36页1.Samuel,thetallestboyinourclass,_(can/should)easilyreachthebooksonthetopshelf.（北京2017）2.Myroomisamess,butI_(neednt/mustnt)cleanitbeforeIgoouttonight.Icandoitinthemorning.（天津2017）
14、选用括号内合适的内容填空。needntcan第25页/共36页3.Ilovetheweekend,becauseI_(neednt,mustnt)getupearlyonSaturdaysandSundays.(北京2016)4.Itwasreallyannoying;I_(couldnt,shouldnt)getaccesstothedatabankyouhadrecommended.(天津2016)needntcouldnt第26页/共36页5.George_(mustnt,cant)havegonetoofar.Hiscoffeeisstillwarm.(浙江2016)6.I_(need
15、nt,couldnt)haveworriedbeforeIcametothenewschool,formyclassmateshereareveryfriendlytome.(天津2015)needntcant第27页/共36页.用oughtto,oughtnotto,haveto,donthaveto,mustnt,neednt填空。1.You_goacrosstheroadwhenthetrafficlightisonred.2.You_buyagift,butyoucanifyouwantto.3.Asstudents,we_putmoreenergiesintostudy.4.He_w
16、orkovertimeinordertofinishthetaskbeforethisSaturday.mustnt/oughtnottoneednt/donthavetooughttohasto第28页/共36页5.Tom_havetoldmeyoursecret,buthemeantnoharm.6.Thesunisshiningbrightlyinacloudlesssky;it_beafinedaytoday.7.Youdontlookwell.You_gotoseethedoctor.8.Adograninfrontofmymotherscarandmymother_stopvery
17、quickly.oughtnottooughttooughttohadto第29页/共36页1.I_(得接受)yoursuggestion.2.You_(你不能来这儿)withoutpermission.3.You_(应当去照顾)yourbrother.4.Ithinkyou_(应当去看)thedoctor.II.Translatethefollowingsentences.havetoacceptmustntcomehereshouldtakecareofoughttogotosee第30页/共36页5.Theteachertoldthestudentsthatthey_(不应该在课堂上沉默
18、不语)allthetime.6.You_(就得不到我的支持)ifyoudosuchathing.7.Iwaitedforthetrainfortwohoursatthestationthismorning.Well,you_(本来没有必要那么早去的).8.“You_(你千万不要再喝酒了),”thedoctorwarnedhim.mustntdrinkanymoreoughtnotto/shouldntkeepsilentinclassshallnotgetmysupportneednthavesetoffsoearly第31页/共36页III.阅读下面的对话，按照句子结构的语法性和上下文连贯的
19、要求，在空格处使用合适的情态动词填空。Doyoucallthatahat?Isaidtomywife.You_besorudeaboutit,mywifeansweredasshelookedatherselfinthemirror.Isatdownononeofthosemodernchairswithholesinitandwaited.Wehadbeeninthehatshopforhalfanhourandmywifewasstillinfrontofthemirror.neednt第32页/共36页We_buythingswedontneed,Iremarkedsuddenly.Ir
20、egrettedsayingitalmostatonce.You_havesaidthat,mywifeanswered.I_remindyouofthatterribletieyouboughtyesterday.mustntneedntneedntIfinditbeautiful,Isaid.Aman_neverhavetoomanyties.Andawoman_havetoomanyhats,sheanswered.Tenminuteslaterwewalkedoutoftheshoptogether.Mywifewaswearingahatthatlookedlikealighthouse!cantcan第33页/共36页FinishUsingStructuresonPage50ofWorkbook.第34页/共36页第35页/共36页感谢您的观看。第36页/共36页