高中英语人教新课标选修6教案:Unit4 Global warming Period 5
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2023-03-02 19:00:01
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Period5 ReadingandWriting教学内容分析 Theteachingmaterialsofthisperiodcontainthreeparts.ThefirstpartisthereadingpassageonPage30withthetitleof“WhatCanWeDoAboutGlobalWarming?”.Itconsistsoftwoletters:arequestfromastudentforhelponaschoolprojectandthereply.Thelettersbringstudents'attentiontoacommonlyheldbeliefthatindividualsarepowerlesstodoanythingaboutenvironmentalproblemsandthatitisgovernmentsthatareinapositiontoactandhavetheresponsibilitytoact.EarthCare'slettersuggestswaystosaveenergyandthereforedecreasetheamountofcarbondioxidethatispouredintotheatmosphere.ThesecondpartisExercise2onPage31,whichasksthestudentstomakeaposterfortheirschoolthattellsstudentsvariouswaystheycanreducetheamountofcarbondioxideintheair.Thethirdpartisawritingtaskdesignedbytheteacher,whichasksstudentstowriteashortpassageaboutglobalwarming.Bypracticingwritingthepassage,studentscanstrengthentheirknowledgeaboutglobalwarminganddeveloptheirsenseofenvironmentalprotection.三维目标设计 Knowledgeandskills1.Toenablethestudentstoknowhowtopreventglobalwarming.2.Togetthestudentstolearnthefollowingusefulnewwordsandexpressions:onbehalfof,advocate,commitment,putupwith,pollution,electrical,solongas,casual,andsoon,motor,cans,circumstances,microwave,refresh,educator,contribution...3.Tohelpthestudentslearnhowtowriteaposter.4.Tofosterthestudents'abilityinskimmingandlookingupinformationinreferencebooksandimprovethestudents'readingability.ProcessandmethodsReadingforspecificinformation,summarizing,discussingandpracticing.Emotion,attitudeandvalue1.Todevelopstudents'senseofenvironmentalprotection.2.Todevelopthestudents'senseofcooperationwithotherstosolveproblems.教学重、难点 1.Theunderstandingofthereadingpassage.2.Thefollowingkeyphrases:makeadifference,putupwith,solongas3.Thefollowingkeysentences:(1)Together,individualscanmakeadifference.(2)ItisOKtoleaveanelectricalapplianceonsolongasyouareusingit...(3)Getyourparentstobuythingsthatareeconomicalwithenergy...(4)Remember—yourcontributioncounts!4.Teachingthestudentshowtowriteaposter.Step1 Revision6,Checkthehomeworkofthelastperiod.Step2 Lead-inShowthestudentsthefollowingpicturesontheslideandaskstudentsthefollowingquestions:1.Haveyoueverseenthefilm2012?2.Whatkindofdisastershaveyouseeninthefilm?3.Whathaveyoulearntfromthefilm?Andthenaskthem:Whatcausestheglobalwarming?Leadthemtotellthecause:gasemission.Atthesametimeshowthefollowingpictures:Aftertalkingaboutthecausesofgasemission,askstudentsthequestion“Whatistheeffectofglobalwarming?”.Helpthemanswer:naturaldisasters(flood,drought,hurricane,tsunamiandtornado),spreadofdiseases,sealevelrising,decreaseofspeciesandsoon.Atlast,askthequestion:“Whatcanwedoaboutglobalwarming?”Andthenleadinthereadingtext.Step3 Skimming1.Skimthefirstletter,andanswerthequestionsbelow:(1)Whoisthewriter?(2)Whatarethetwoconcernsoftheletter?Suggestedanswers:(1)AstudentnamedOuyangGuang.(2)①Hisopinionthat,asanindividual,hecanhavenoeffectonenvironmentalproblems.②Gettingsomesuggestionsforwhathecandoaboutglobalwarming.2.Readthesecondemail,andanswerthefollowingquestion:DoesEarthCareagreewithOuyangGuang'sopinionthatindividualscanhavenoeffect?Suggestedanswer:No,EarthCaredoesnotagree.Step4 ScanninganddiscussionAskstudentstoscanthelettersandlistEarthCare'ssuggestionsinthechartonP30,and6,discusswhethertheycancarryouteachsuggestion.Givereasonsfortheiranswers.Andthenaskoneortwogroupstomakeanoralreport.EarthCare'ssuggestionCanyoucarryitout?ReasonsIfyouarenotusingelectricalappliances,turnthemoff.Yes.Saveenergy.Ifyou'recold,putonmoreclothesinsteadofturninguptheheat.Yes.Saveenergy.Motorvehiclesusealotofenergy,sowalkorrideabikeifyoucan.Yes.Saveenergy.Recyclecans,bottles,plasticsandnewspapersandbuythingsmadefromrecycledmaterials.Yes.Saveenergy.[来源:学科网]Getyourparentsorfriendstobuyproductsthataremadetosaveenergy.Yes.Saveenergy.Plantmoretrees.Yes.Plantsabsorbcarbondioxidefromtheair.Talkwithyourfamilyandfriendsaboutglobalwarmingandtellthemwhatyou'velearned.Yes.Together,individualscanmakeadifference.Step5 LanguagestudyShowthestudentsthefollowinglanguagepointsinthepassageinaslideshow.1.makeadifference(P30)【原句再现】Together,individualscanmakeadifference.众人拾柴火焰高。【观察探究】(1)ThefactthatIcannoworganizemyowntimemakesabigdifference.现在我能自己安排时间了,这对我有很大的作用。(2)Itmakesnodifferencetomewhatyousay.I'mnotgoing.无论你怎么说对我都没有影响,反正我不去。(3)Itwon'tmakemuchdifferencewhetheryougotodayortomorrow.你今天去也好,明天去也好,关系不大。(4)Shemakesnodifferencebetweenhertwosons.她对两个儿子一视同仁。【归纳总结】makeadifference(tosb./sth.)意为“对某人/某物起作用、有影响”,difference前面可以加不同的修饰词,如no/some/little/much等。makeadifferencebetween...表示“区别对待……”。【即景活用】—WhenshallIgothere?—It______whetheryougotodayortomorrow.6,A.madenodifference B.madenosenseC.makesnodifferenceD.makesnosenseSuggestedanswers:C2.putupwith(P30)【原句再现】Wedonothavetoputupwithpollution.我们不必忍受污染。【观察探究】(1)IputupwithhersolongasIcould.我尽可能地容忍她。(2)Thatlady,asahousewife,hasalottoputupwith.作为一名家庭主妇,那位妇女必须要忍受许多事情。[来源:学#科#网]【归纳总结】putupwith...“容忍,忍受”,宾语可以是人或者事物。【知识拓展】(1)bear和stand在疑问句和否定句中和can,beableto连用,也表示“忍受”,其宾语多为事物。(2)livewithsth.忍受某事;livewithsb.和某人一起生活。【即景活用】Hebehavedbadlytowardshiswife.Asaresultshecouldn't______himandlefthim.A.comeupwithB.catchupwithC.putupwithD.liveupSuggestedanswer:C3.solongas(P30)【原句再现】ItisOKtoleaveanelectricalapplianceonsolongasyouareusingit—ifnot,turnitoff!只要你在使用,让家用电器开着无所谓——如果不用,就请关闭!【观察探究】(1)Youcanborrowmybikesolongasyouremembertoreturnitassoonaspossible.只要你记着尽早归还就可以借用我的自行车。(2)Wecansurelyovercomethedifficultiessolongaswearecloselyunited.只要我们紧密地团结在一起,我们就一定能够克服这些困难。【归纳总结】solongas起连词作用,引导条件状语从句,可以与aslongas互换,意思是“只要……”,前者语气较强,后者主要用于口语中。[来源:学科网]【知识拓展】条件状语从句的引导词还可以是if,unless,onconditionthat,suppose,supposing,provided(that)等。【即景活用】______Iamconcerned,weshouldbebraveandwewillreachthetopofthehillatlast______wetryourbesttoclimbthehill.A.Solongas;aslongasB.Asfaras;asfarasC.Asfaras;solongas6,D.Onconditionthat;assoonasSuggestedanswer:CStep6 Writing1.Askthestudentstomakeaposterfortheirschoolthattellsstudentsvariouswaystheycanreducetheamountofcarbondioxideintheair.Tellstudentstoillustratetheirposterandgiveitaheadingthatwillbeeye-catchingandwillmakeotherswanttoreadit.Suggestedanswer:2.Askstudentstochooseatopicfromthelistthattheyfeelstronglyabout.Makenotesonthetopicusingheadingssimilartothetableinthereadingtask.Usethepassageasamodel.Writingtips:[来源:学.科.网]Step1:Writeoutthethesisstatement(pointofview).Step2:Writeoutthetopicsentenceofthefirstbodyparagraph.Step3:Givethesupportingpointsanddetailsaboutthefirstsubtopic.Step4:Writeoutthetopicsentenceofthesecondbodyparagraph.Step5:Givethesupportingpointsanddetailsaboutthesecondsubtopic(morebodyparagraphs).Asampleversion:TheEnvironmentalEffectsofFossilFuelsThereisnodoubtthatfossilfuelsbringalotofgoodtous.Butdoyouknowthatmanyoftheenvironmentalproblemsourcountryfacestodayresultfromourfossilfueldependence?Theenvironmentfacesairpollution,globalwarming,acidrain,andseveralotherveryseriousproblemsbecauseofouruseoffossilfuels.Overthelast150years,burningoffossilfuelshasresultedinmorethan25percentincreaseincarbondioxideinouratmosphere.Carbondioxideisoneofthemainfactorsinglobalwarmingwhichisnegativelyaffectingeveryone.Fossilfuelsalsoaffectwaterpollution,landpollution,andthermalpollution(heatpollution).Coalminingisoneofthecausesofpollutionintheenvironment.Aftertheminingiscompleted,thelandwillremainbarren.Materialsotherthancoalarealsobroughttothesurfaceinthecoalminingprocessandtheseareleftassolidwastes.Theproduction,transportation,anduseoffossilfuelsaretoblamefortheeffectsofpollutionontheenvironment.Thenwhatshouldwedo?Weshouldsparenoefforttoimproveourenvironment.Pleasesaveenergyandusefewerfossilfuelsinourdailylives.Step7 Homework1.Masterthelanguagepointsinthetext.2.Finishthewritingtask.Step8 Reflectionafterteaching________________________________________________________________________6,________________________________________________________________________GlobalWarmingSolutions—WhatCanWeDo?Theevidencethathumansarecausingglobalwarmingisstrong,butthequestionofwhattodoaboutitremainscontroversial.Economics,sociology,andpoliticsareallimportantfactorsinplanningforthefuture.Evenifwestoppedemittinggreenhousegases(GHGs)today,theEarthwouldstillwarmbyanotherdegreeFahrenheitorso.Butwhatwedofromtodayforwardmakesabigdifference.Dependingonourchoices,scientistspredictthattheEarthcouldeventuallywarmbyaslittleas2.5degreesorasmuchas10degreesFahrenheit.AcommonlycitedgoalistostabilizeGHGconcentrationsaround450-550partspermillion(ppm),orabouttwicepre-industriallevels.Thisisthepointatwhichmanybelievethemostdamagingimpactsofclimatechangecanbeavoided.Currentconcentrationsareabout380ppm,whichmeansthereisn'tmuchtimetolose.AccordingtotheIPCC,we'dhavetoreduceGHGemissionsby50%to80%ofwhatthey'reontracktobeinthenextcenturytoreachthislevel.Isthispossible?Manypeopleandgovernmentsarealreadyworkinghardtocutgreenhousegases,andeveryonecanhelp.ResearchersStephenPacalaandRobertSocolowatPrincetonUniversityhavesuggestedoneapproachthattheycall“stabilizationwedges”.ThismeansreducingGHGemissionsfromavarietyofsourceswithtechnologiesavailableinthenextfewdecades,ratherthanrelyingonanenormouschangeinasinglearea.Theysuggest7wedgesthatcouldeachreduceemissions,andallofthemtogethercouldholdemissionsatapproximatelycurrentlevelsforthenext50years,puttingusonapotentialpathtostabilizearound500ppm.Therearemanypossiblewedges,includingimprovementstoenergyefficiencyandvehiclefueleconomy(solessenergyhastobeproduced),andincreasesinwindandsolarpower,hydrogenproducedfromrenewablesources,biofuels(fuelsproducedfromcrops),naturalgas,andnuclearpower.Thereisalsothepotentialtocapturethecarbondioxideemittedfromfossilfuelsandstoreitunderground—aprocesscalled“carbonsequestration”.Inadditiontoreducingthegasesweemittotheatmosphere,wecanalsoincreasetheamountofgaseswetakeoutoftheatmosphere.PlantsandtreesabsorbCO2astheygrow,“sequestering”carbonnaturally.Increasingforestlandsandmakingchangestothewaywefarmcouldincreasetheamountofcarbonwe'restoring.Someofthesetechnologieshavedrawbacks,anddifferentcommunitieswillmakedifferentdecisionsabouthowtopowertheirlives,butthegoodnewsisthatthereareavarietyofoptionstoputusonapathtowardastableclimate.6