学人教版必修三Unit3Festivals around the worldPeriod4 Grammar课件（61张）.ppt

modalverbs 2019学年度人教版必修三unit3festivalsaroundthefestivals objective tolearntheuseofmodalverbs 语法讲解建议采用归纳法 如尽可能多的呈现一些相关例句 或可让学生从已学课文中找相应例句 引导学生试着从所观察到的语言现象中总结出语言规则和语法规律 1 infact chinamayhavethelargestnumberofenglishlearners 必修1 2 blackpeoplecouldnotvoteorchoosetheirleaders 必修1 3 youshouldpaymoreattentiontotherainforest 必修2 4 butofcourseyoucanaskanyquestionsyoulike 必修2 5 youmustbeveryproud 必修2 havealk lookatthefollowingsentences payingattentiontotheunderlinedpart 1 mostancientfestivalswouldcelebratetheendofcoldweather 2 ortosatisfytheancestors whomightreturneithertohelportodoharm 3 forthejapanesefestivalobon peopleshouldgotocleangraves 4 thiswillleadtheancestorsbacktoearth 5 festivalscanalsobeheldtohonourfamouspeople sentencesfromthisunit guessinggame totestyoursenseofobservationtotestyourabilityofshort termmemorytotestyourabilitytohighlightthelanguagepoints guess 1 infact china havethelargestnumberofenglishlearners 2 blackpeople notvoteorchoosetheirleaders 3 you paymoreattentiontotherainforest4 butofcourseyou askanyquestionsyoulike 5 you beveryproud should may could can must 6 mostancientfestivals celebratetheendofcoldweather 7 ortosatisfytheancestors who returneithertohelportodoharm 8 forthejapanesefestivalobon people gotocleangraves 9 this leadtheancestorsbacktoearth 10 festivals alsobeheldtohonourfamouspeople would might should will can igoouttoplay mum no you youshoulddoyourhomeworkfirst a might wouldn tb may hadbetternotc must mustn td need mustn t 2 whereisemma ican tsayforsurewheresheis butshe beoutshopping a canb shouldc mustd may3 theroomisinaterriblemess it cleaned a can thavebeenb couldn tbec mayhavebeend wouldbe 4 there beanydifficultyaboutpassingtheroadtestsinceyouhavepractisedalotinthedrivingschool a mustn tb shan tc shouldn td needn t5 thisumbrellalookslikemine butitisn t whose itbe a mustb canc mayd might 6 mayisitbesideyou sir sorry you look mydaughteriscoming a can tb mustn tc needn td shouldn t7 peter bereallydifficultattimeseventhoughheisanicepersoningeneral a shallb shouldc cand must 8 you behungryalready youhadlunchonlytwohoursago a wouldn tb can tc mustn td needn t9 althoughthis soundlikeasimpletask greatcareisneeded a mustb mayc shalld should 10 i vetakensomeoneelse sgreensweaterbymistake it harry s healwayswearsgreen a hastobeb willbec mustn tbed couldbe 以上我们已经通过归纳总结和练习对本课的语法内容有了一定的了解 下面就让我们根据之前练习的考察情况进一步选择讲解该语法项的重难点 情态动词表示说话人的某种感情或语气 对某一动作或状态的某种态度 表示 需要 可以 必须 应当 等 什么是情态动词 modalverbs wordslikecan will may must andafewothersarecalledmodals modalverbshelpotherverbsexpressameaningoranidea somecommonusesofthemodalsarethese ability 1hecanspeakenglishnow 2hecouldn tspeakenglishayearago 3i mnotabletocometothegameonfriday permission allpassengersmaynowboard wecanboardnow obligation youmustfastenyourseatbelts strong youshouldpayattention weak yououghttopayattention possibility 1itmayrain 2howcouldiforgetanimportantthinglikethat 3hecan t couldn thaveknowntheresult meaningssimilartothoseofthemodalscanoftenbeconveyedbyrealverbforms hehasto must isableto speakenglish can isallowedto may issupposedto should 情态动词的语法特征 1 情态动词不能单独做谓语 除ought和have外 后面只能接不带to的不定式 2 情态动词没有人称 数的变化 但有些情态动词 如can will也有一般式和过去式的变化 只作情态动词的can could may might oughtto must可情态可实义的need dare dared可情态可助动词的shall should will would相当于情态动词的haveto usedto 3 情态动词的 时态 形式并不是时间区别的主要标志 不少情况下 情态动词的现在式形式和过去式形式都可用来表示现在时间 过去时间和将来时间 下面我们具体了解一下几个常用情态动词的用法 1 can的主要用法是 a 表示体力或脑力的能力 eg thegirlcandanceverywell b 表示说话者的推测 事物的可能性 eg canthenewsbetrue c 在口语中 can可以表示请求或允许 eg canisithere can和could 2 could的主要用法是 a could是can的过去式 表示与过去有关的能力和推测 eg weallknewthattheyoungmancouldn tbeadoctor b could可以代替can表示请求 但语气较can客气 委婉 eg couldyoulendmeyourdictionary couldiuseyourbike 3 can和could接动词的完成形式 表示可能已经做某事 can用在否定和疑问句中 表示不相信 怀疑等态度 eg theycan thavegoneoutbecausethelightisstillon may常用来表示 a 表示请求 允许 比can较为正式 eg mayicomein youmaygonow may和might b 表示说话人的猜测 也许 可能 通常只用于肯定句和否定句中 eg ibelievethemanisfromengland butimaybewrong theguestmayarrivethisafternoon theroadmaybeblocked 这条路可能不通了 theroadcanbeblocked 这条路可能会是不通的 在疑问句中 表示可能性用can wherecanhebe 他会在哪呢 may表示现实的可能性 can表示理论上的可能性 c 表示祝愿 但语气较正式 eg mayyousucceed mayyouhaveagoodjourney might的用法有 多在间接引语中表示过去的可能和允许 shesaidthathemighttakeherbike 她说他可以拿她的自行车去用 除了在间接引语中以外 might一般不表示过去的可能或者许可 如要表示过去的可能可以用could 表示过去的许可可以用was were allowedto或者hadpermissionto 表示现在的可能 其可能性要比may小 如 hemightgohometomorrow 说不定他明天会回家 表示现在的许可 语气比may较委婉 一般用于疑问句 包括间接疑问句 不可用于肯定句或者否定句 如 mightihaveawordwithyou 我可以和你说句话吗 will和would 1 will是助动词还是情态动词 will用于构成将来时是助动词 用于表示 意志 决心 请求 是情态动词 would亦同理 eg iwilltellyousomethingimportant 我要告诉你一些重要的事 助动词 willyoutellherthati mhere 请您告诉她说我在这儿 好吗 情态动词 2 在疑问句中用于第二人称 提出请求或询问 eg ifyouwanthelp letmeknow willyou 如果你需要帮助 让我知道 好吗 willyoutypethis please 请把这个打一下 好吗 won tyousitdown 请坐下 好吗 i dgotherewithyou 我要和你一块到那儿去 yourteacherwouldn tallowit 老师不会允许这件事 表意愿 表许可 3 would比will客气委婉 eg wouldyouhelpus please 请您帮助我们 好吗 表请求 shall和should 1 shall用于构成将来时是助动词 eg perhapsishallpayavisittoenglandthiswinter 可能今年冬天我会去英国观光 构成一般将来时 助动词 shallwegobytrain mom 妈妈 我们乘火车去好吗 用于征求对方的意见 情态动词 ishallgoatonce 我必须立即去 表 决心 情态动词 shall用于征求对方的意见 表示 决心 是情态动词 2 should表示义务 建议 劝告 意为 应该 should have 过去分词 表示本应该在过去做但没有做 eg youshouldkeepyourpromise 你应该遵守诺言 sheshouldhavepassedtheexam 她应该通过考试的 must的主要用法 1 表示必然性 eg wemustalldie 人总要死的 2 表示强制或者义务 eg youmustgetupearly 你必须早起来 注意 mustnot的意思是不许可 不应该或者禁止 如 wemustn twasteourtime mayitakethismagazineout no youmustn t must用于一般疑问句的时候 肯定回答应该用yes please或者i mafraidso 其否定回答应该用needn t或者don thaveto 表示推测 语气非常肯定 近乎确定的意味 一般用在肯定句 itmustbeeleveno clocknow hemustbecrazy 在表示推测的否定或者疑问句中必须用can could 不可以用must ifmarydidn tleavehereuntilfiveo clock shecan tbehomeyet 如果玛丽五点才离开这儿 她此时一定还未到家 review 情态动词表示说话人对某一动作或状态的态度 认为 可能 应当 必要 等等 掌握下列情态动词的用法 may might can could will would shall should must can t individualactivity 注 另附word文档 点击此处链接 1 someaspectsofapilot sjob beboring andpilotsoften workatinconvenienthours 2006湖南 a can havetob may canc haveto mayd oughtto must i choosethebestanswer 2 how syourtouraroundthenorthlake isitbeautiful it be butitisnowheavilypolluted 2007全国i a willb wouldc shouldd must3 itoldyourfriendhowtogettothehotel butperhapsi havedrivenherthere 2007陕西 a couldb mustc mightd should 4 shelooksveryhappy she havepassedtheexam iguessso it snotdifficultafterall 2007江苏 a shouldb couldc mustd might5 whereismydictionary irememberiputithereyesterday you itinthewrongplace 2007江西 a mustputb shouldhaveputc mightputd mighthaveput 6 accordingtotheairtrafficrules you switchoffyourmobilephoneboarding 2008上海 a mayb canc wouldd should7 thankyouforallyourhardworklastweek idon tthinkwe itwithoutyou 2008山东 a canmanageb couldhavemanagedc couldmanaged canhavemanaged 8 butfortheirhelp we theprogramintime 2009安徽 a cannotfinishb willnotfinishc hadnotfinishedd couldnothavefinished9 thedoctorrecommendedthatyou swimaftereatingalargemeal 2009浙江 a wouldn tb couldn tc needn td shouldn t 10 it stheoffice soyou knoweatingisnotallowedhere oh sorry 2009湖南 a mustb willc mayd need11 thetrafficisheavythisday i arriveabitlate socouldyousavemeaplace 2009辽宁 a canb mustc needd might 12 whatdoyoumean thereareonlytentickets there betwelve 2009全国i a shouldb wouldc willd shall13 hi tom anyideawherejaneis she intheclassroom isawhertherejustnow 2009重庆 a shallbeb shouldhavebeenc mustbed mighthavebeen 14 justbepatient you expecttheworldtochangesosoon 2010全国i a can tb needn tc maynotd willnot15 ihaven tgotthereferencebookyet buti llhaveatestonthesubjectnextmonth don tworry you haveitbyfriday 2010江苏 a couldb shallc mustd may 16 you haveawrongnumber shesaid there snooneofthatnamehere 2010浙江 a needb canc mustd would17 sorry professorsmith ididn tfinishtheassignmentyesterday oh you havedoneitasyesterdaywasthedeadline 2010上海 a mustb mustn tc shouldd shouldn t 18 they havearrivedatlunchtimebuttheirflightwasdelayed 2011全国 a willb canc mustd should19 idon treallylikejames whydidyouinvitehim don tworry he come hesaidhewasn tcertainwhathisplanswere 2011北京 a mustnotb neednotc wouldnotd mightnot 20 ifyou smoke pleasegooutside 2011全国ii a canb shouldc mustd may21 shalliinformhimofthechangeoftheschedulerightnow iamafraidyou incasehecomeslateforthemeeting 2011福建 a willb mustc mayd can 22 ileftmyhandbagonthetrain butluckilysomeonegaveittoarailwayofficial howunbelievabletogetitback imean someone it 2011江苏 a willhavestolenb mighthavestolenc shouldhavestolend musthavestolen 23 thepolicestillhaven tfoundthelostchild butthey redoingallthey 2011四川 a canb mayc mustd should24 noone becomparedwithyaominginplayingbasketball 2011湖南 a canb needc mustd might 25 willyoureadmeastory mummy ok you haveoneifyougotobedassoonaspossible 2011陕西 a mightb mustc