选修6 Unit4 Global Warming全单元课件

Unit3GlobalWarmingWhatisenergy?Whatdoweuseitfor?heat,light,power,etc.Wheredoestheenergycomefrom?SourcesofenergyRenewable?Non-Renewable?Energyisnecessaryinourlife.Sourcesofenergyareendless,sowedon’thavetoworryaboutit.Thereisnotroublecausedwhenweproduceenergyfromthesources.Wecanswitchtoothersourcesofenergyifoneisrunout.Doyouagree?Whatisgreenhouse?Whatdoesitdo?Whereelsedowesee“greenhouse”effect?THEEARTHISBECOMINGWARMER—BUTDOESITMATTER?INTRODUCTION:•Author____________•Magazine___________________•Problemdiscussed________________•Whatquestionswilltheauthorexplores?SophieArmstrongEarthCareGlobalwarmingHowhasitcomeabout?Doesitmatter?Para1-4Para5-6Part1:Howhasitcomeabout?•Para1•Para2•Para3•Para4•Howhasthetemperatureincreased?•Whohasdoneit?•HowhastheCo2developed?•Whathascauseditthetopicsofeachparagraph•Whohasdoneit?•Whathascausedit？•HowhastheC02developed?•Howhasthetemperatureincreased?HumansBurnfossilfuelsenergy“greenhouse”gasesTrapheatfromthesunTheearthgetswarm“Greenhouse”EffectTrueorFalse1.Greenhouseeffectdoesdamagetotheearthbywarmingitup.2.Greenhouseeffectisduetohumanactivities.3.Humansmakethegreenhouseeffectmoreseriousandthereforecauseglobalwarming.FFTHow?Whatresearcheshavebeendone?Abouttheresearches:1.Whataretheresultsofeachresearch?2.Aretheyrelated?How?3.Whatthefuturetemperaturewillbelike?CO₂℃/℉CO2wentup.Temperatureincreased.Theyarepositively/directlyrelated.Itisuncertainyet.Part2:Doesitmatter?Negativeeffects•Predictor_________•______temperatureincrease(maybeby____degree.)•Leadto__________•A_________futurePositiveeffects•Predictor_________•______warming;•____________environmentalconsequence;•A________futureJaniceFoster5acatastropheGeorgeHambleymildWithfewbadPositive/bettergreatNegative/worseThinkingafterreading:1.Whichideadoyoubelieveaboutglobalwarminganditseffects?Why?2.Isthereanythingwecandoaboutglobalwarming?3.Ifthewarmingseemshardtoslowdownnomatterwhatwedo,willyoukeeponsavingenergyorreduceCO2?Filmsrecommended:1.Aninconvenienttruth难以忽视的真相theageofstupid愚蠢年代2.Thegreatglobalwarmingswindle全球变暖大骗局UsefullanguagepointsUsefulphrases1.Consumeenergy2.℉/℃3.Comeabout4.Explorethequestions5.Arandomphenomenon6.Makeaccuratemeasurementof…7.Resultin/leadto8.Beopposedto(opposite,opponent)9.Evenif(though)10.Keepon(carryon)11.Ontheonehand……OntheotherhandUsefulwords1.Graph;data2.Subscribeto3.FossilFuel4.Byproducts5.Quantity/range6.Tendto7.Trend8.Catastrophe9.Consequence10.State11.Mild(反violent)Consume1.Marthawouldconsumenearlyapoundofcheeseperday.2.Someofthemostefficientmicrowaveconsume70percentlesselectricitythantraditionalmodels.3.Newinformationdevices,likecomputer,Ipadorsmartphone,havechangedthewaypeopleconsumebooks.subscribevi.持有或者同意（某种观点）•I'vepersonallyneversubscribedtotheviewthateithersexissuperiortotheother.vi.订阅（书报杂志服务等）•MyreasonforsubscribingtoNewScientististokeepstepwithadvancesinscience.翻译练习有很多杂志你可以订阅来提高阅读能力。Therearemanymagazinestowhichyoucansubscribetoimproveyourreadingability.fueln.燃料；刺激因素•Runningoutoffuel,thecarbrokedown.•Herstressisalsoherfueltopushherforward.v.得到燃料;供以燃料，加燃料•Theystoppedatthepetrolstationtofuelup.•Winningtheprizefueledhisenthusiasmaboutphotography.同根词：refuelQuantity1.Doctorsdoencourageaquantityofexercises,buttheyalsoinsistonabalanceddiet.2.Nowlargequantitiesofshoppingaremadethroughtheinternet.3.Youcanbeofferedalowerpriceifyoubuytheirgoodsinquantity.tend1.Peoplesubscribetotheviewthatthefattendtoeatmore.2.Mostpeopletendtobefriendswiththosewhoaresimilartothemselves.3.Astowhetherglobalwarmingwouldleadtocatastrophe,mostpeopletendto/towardsthenegativeviewpoint.4.Kidshaveanaturaltendencytobelievetheirparents.consequence1.Theconsequenceoflong-termairpollutionisthatmorepeoplesufferfromlungcancer.2.Parentsandadolescentstendstoholddifferentviews.Consequently/Asaconsequence,theyoftenarguewitheachother.3.Don’tthinkyoucangetdrunkwithfewbadconsequences.4.Thestormdieddown,withtheconsequencethatawholecitylayinruins.stateN.areaorcountryN.SituationorconditionV.tospeakformally•LeadersofthestatesaremeetinginLouisville.•Theoldhouseisinariskystate.•Thepolicestatedthathewasarrestedforabusingpower.派生词statementIt用法（II）强调句结构：Itis……that….(/who)作用：强调句子中某成分：主语、宾语,状语特点：对原句结构时态和意义不产生影响。1.Itishumanactivitiesthathaveledtoglobalwarming.=____________________________________________________________2.Itistheburningoffossilfuelsthathasresultedintheincreaseintemperature.=______________________________________________________________________Humanactivitieshaveledtoglobalwarming.Theburningoffossilfuelshasresultedintheincreaseintemperature.1.Itishowweconsumeenergythathastobeimproved.2.Itistheheatfromthesunthatweneedtowarmup.3.ItwasLindathat/who/whomIwastalkingtooverthephone.4.ItwasbesidetheriverthatIlastsawheralone.5.Itwasyesterdaynotlastweekthatwehadthemeeting.Whydoyouforgetitsofast?6.Itwasnotuntilyougrowupthatyouwillunderstandyouparents.7.ItwaswhereyoutookthephotothatIhadtraveledlastyear.书后练习page29强调句的疑问格式及回答1.---Wasityouthatcalledthepolice?---__________________________________2.Isitthegreenhouseeffectthathasresultedinthete