【课件】Unit+3Discovering+Useful+Structures+课件人教版（2019）必修第三册

UNIT3DIVERSECULTURES

PeriodIIIDiscoveringUsefulStructuresStepI学习理解Lookatsomesignsinourdailylifeandanswerthequestions.•Canyouexplainthesesignsincompletesentences?•Whatgrammaticalphenomenonisit?Youcannotsmokehere.Youmustfastensafetybelt.Youcannottakephotoshere.Ellipsis.Readthesentencesselectedfromthereadingtext,andthenfillintheblankswiththewordsthathavebeenomittedtoavoidrepetition.1.Thisdistrictusedtobeapoorareaoftown,but(

)isnowacentreforart,music,andfood.

2.(

)Arealmixofcultureshere!

3.Whatgreatfood(

)!

4.(

)Can’twait!

itThereis

itis

I

Readthefollowingpassageandnoticetheuseofellipsis.BeforetheLabourDay,mydadaskedme,“DoyouwanttovisitHongkongduringtheholiday?”Icouldn’tbelievemyearsandrespondedwithjoy,“Iwouldliketo!HongKongisacityI’vedreamtaboutvisitingformanyyears!”Thenightbeforeourdeparture,myeldersisteraskedme,“Areyouexcited?”“Yes,I’m!

Ican’twait!

I’velearntwecanmeetallDisneyCartooncharactersthereandthatthereisafascinatingfireworksshow.Whynottakeourcameraandrecordtheshow?”省略是一种避免重复、突出新信息并使上下文紧密连接的语法手段。恰到好处的省略可以使语言更简洁,意思更明确,从而突出关键信息。Observethesentencesandfindthewordsthathavebeenomitted.Thendiscussandsummarisetheusage.1.Mustfastensafetybelt.2.Godownthisstreetandturnrightatthesecondcrossing.3.Somethingtodrink?4.Whynottakeacameraandrecordthefireworksshow?5.—Areyouexcited?—Yes,Iam!(You)Mustfastensafetybelt.(You)Godownthisstreetandturnrightatthesecondcrossing.(Wouldyoulike)Somethingtodrink?Whynot(Whydon’tyou)takeacameraandrecordthefireworksshow?—Areyouexcited?—Yes,Iam(excited)!Observethesentencesandfindthewordsthathavebeenomitted.Thendiscussandsummarisetheusage.6.Ican’twait!7.—WhendidyouvisitHongkong?—DuringtheLabourDay.8.Whatamixtureofculturehere!Ican’twait(togothere)!—WhendidyouvisitHongkong?—(Ivisitedit)DuringtheLabourDay.Whatamixtureofculture(itwas)here!讨论归纳:在祈使句中,主语通常被省略。有时句子可以省略主语、谓语的一部分、表语、宾语等一个或几个句子成分。感叹句常省略主语和be动词。Observethesentencesandfindthewordsthathavebeenomitted.Thendiscussandsummarisetheusage.1.Ienjoyedtakingadventurousrides,butmysisterhated.2.SomeofthebuildingsweredesignedinChinesetraditionalstyleswhileothersEuropeanstyles.Ienjoyedtakingadventurousrides,butmysisterhated(takingadventurousrides).SomeofthebuildingsweredesignedinChinesetraditionalstyleswhileothers(weredesignedin)Europeanstyles.讨论归纳:两个并列句中,后一个分句常省略与前一分句中相同的部分。Takeouttheunnecessarypartsinthefollowingsentences.1.Mymotherworksinahospitalandmyfatherworksinafactory.2.Whenwintercomes,thedayisgettingshorterandshorter,andthenightisgettinglongerandlonger.Mymotherworksinahospitalandmyfatherfactory.Whenwintercomes,thedayisgettingshorterandshorter,andthenightlongerandlonger.Observethesentencesandfindthewordsthathavebeenomitted.Thendiscussandsummarisetheusage.1.—DoyouthinkHongkongisamixtureofChinesewisdomandwesterninfluence?—Ithinkso.2.I’velearntwecanmeetallDisneyCartooncharactersthereandthatthereisafascinatingfireworks.3.Iknowhewaslate,butIdon’tknowwhy.—DoyouthinkHongkongisamixtureofChinesewisdomandwesterninfluence?—Ithink(thatHongkongisamixtureofChinesewisdomandwesterninfluence).I’velearnt(that)wecanmeetallDisneyCartooncharactersthereandthatthereisafascinatingfireworks.Iknowhewaslate,butIdon’tknowwhy(hewaslate).Observethesentencesandfindthewordsthathavebeenomitted.Thendiscussandsummarisetheusage.讨论归纳1：从句中有一些成分被省略而用so或not来代替。这种

用法常见的有:“Whynot?”“Ihopeso.”“I’mafraidso.”及“Isuppose/believe/hopenot.”等。讨论归纳2：宾语从句中常省略连词that，但当有两个并列的宾语

从句时，第二个that则不能省略。讨论归纳3：由which、when、where、why、how引导的宾语从句

可全部省去，只保留引导词。Observethesentencesandfindthewordsthathavebeenomitted.Thendiscussandsummarisetheusage.1.HongkongisacityI’vedreamtaboutvisitingformanyyears.2.LiQiaozhiwasagreatdoctormanypeopleadmireverymuch.3.ThemansittingbythewindowisMrSmith.Hongkongisacity(that/which)I’vedreamtaboutvisitingformanyyears.LiQiaozhiwasagreatdoctor(that/who)manypeopleadmireverymuch.Theman(whois)sittingbythewindowisMrSmith.讨论归纳1：在限制性定语从句中,作宾语的关系代词可以省略,但在介词前置或非限制性定语从句中不可省略。讨论归纳2：在限制性定语从句中,作主语的关系代词和be动词可以省略。Observethesentencesandfindthewordsthathavebeenomitted.Thendiscussandsummarisetheusage.1.Whileinthecablecar,IheardpeoplespeakMandarin,EnglishandCantonese.2.Ifgivenanotherchance,IwouldpayavisittoHongkongagain!3.Thefireworksshowwasmorebeautifulthanexpected.While(Iwas)inthecablecar,IheardpeoplespeakMandarin,EnglishandCantonese.If(Iwere)givenanotherchance,IwouldpayavisittoHongkongagain!Thefireworksshowwasmorebeautifulthan(ithadbeen)expected.讨论归纳：在以when、while、once引导的时间状语从句，if、unless引导的条件状语从句，though、although引导的让步状语从句以及as、than、asif等引导的比较状语从句或方式状语从句中，如果主句和从句的主语一致或从句主语为it且从句中含有be动词时，从句中可省去主语和be动词部分。1.IfIwereateacher,Iwouldbestrictwithmystudents.=

,Iwouldbestrictwithmystudents.2.IfIhadnotmarriedyou,Iwouldnothavelivedsuchamiserablelife.=

,Iwouldnothavelivedsuchamiserablelife.3.IfIweretoexplorespace,Iwouldtakeaphotoofitforyou.=

,Iwouldtakeaphotoofitforyou.Takeouttheunnecessarypartsinthefollowingsentences.WereIateacherHadInotmarriedyouWereItoexplorespace技巧点拨:先省略if→提前be动词/had。注意:not不可以提前。StepII应用实践1.I’llnotgotothepartyunless

(invite).2.Once

(catch)stealinginasupermarket,youwillbepunished.3.Hehadawonderfultimewhen

(travel)withhismothertoallcornersoftheworld.4.Firstdegreeburnsturnwhitewhen

(press).5.Though

(tire),theywentonworkinginordertofinishthejobontime.Fillintheblankswiththeappropriateformsofthewordsgiven.invitedtired

caughttravellingpressed1.YoumeanyouareplanningatripacrosstheAtlanticforaholiday?Itsoundslikeagoodidea.2.Hetriedtosolvehisfinancialproblems,buthecouldn’tsolvetheproblems.3.Ifitisnecessary,I’llfinishmyreportonAmericanpoetryassoonasitispossible.4.Areyougoingtodresslikethat?Wearingadressmightbebetterthanjeansandboots.5.Somewildmushroomsarepoisonousandsomearenotpoisonous.6.Ireallylikethatpaperfoldingbook,andmysonlikesthatpaperfoldingbook,too.Rewritethesentencesbytakingouttheunnecessaryparts.YoumeanyouareplanningatripacrosstheAtlanticforaholiday?Goodidea.Hetriedtosolvehisfinancialproblems,butcouldn’t.Ifnecessary,I’llfinishmyreportonAmericanpoetryassoonaspossible.Areyougoingtodresslikethat?Adressmightbebetterthanjeansandboots.Somewildmushroomsarepoisonousandsomearenot.Ireallylikethatpaperfoldingbook,andmyson,too.Readtheconversation.Findoutwhichwordshavebeenleftout.Justin:Linlin,I’mgoingtoGuizhouProvincenextmonth.I’msuperexcited!Anyrecommendationsforplacestovisit?Linlin:Wow,cool!Guizhouisaprovincewithalotofculturaldiversity.Placestovisit…well,definitelytheHuangguoshuWaterfallfirst.Justin:What’sspecialaboutthewaterfall?Linlin:Well,haveyoueverheardoftheChinesenovelJourneytotheWest?Justin:Yes,Ihave.Why?Linlin:Inthebackofthewaterfall,youwillfindacave,whichisthehomeoftheMonkeyKing.Justin:Really?Cool!I’lldefinitelycheckitout.Linlin:AndIstronglyrecommendtheethnicminorityvillages.You’llfindChinesecultureismuchmorediversethanyouthought.Justin:Soundsgreat,thanks!Readtheconversation.Findoutwhichwordshavebeenleftout.Justin:Linlin,I’mgoingtoGuizhouProvincenextmonth.I’msuperexcited!Do

youhave

anyrecommendationsforplacestovisitinGuizhouProvince?Linlin:Wow,that’scool!Guizhouisaprovincewithalotofculturaldiversity.

Whataresome

placestovisitinGuizhou?Well,definitelytheHuangguoshuWaterfallisthe

firstplacetovisitinGuizhouProvince.Justin:What’sspecialaboutthewaterfall?Linlin:Well,haveyoueverheardoftheChinesenovelJourneytotheWest?Justin:Yes,IhaveheardoftheChinesenovelJourneytotheWest.Whydoyou

askifIhaveheardoftheChinesenovelJourneytotheWest?

Read