Unit+3+Environmental+Protection+Reading+and+Thinking+课件【备课精讲精研 】高中英语人教版（2019）选择性必修第三册

Unit3

EnvironmentalprotectionReadingandthinkingDiscussclimatechangeClimatechangerequirestheworld’sattentionLead-inPre-readingwhile-readingpost-readingPart1Lead-in1.What’shappeninginthephoto?2.Whatwillhappenifglaciersaremeltingfasterthanbefore?3.Whydidithappen?Risingsealevels.Theiceismelting.Becauseoftheglobalwarming.globalwarmingmeltingicedroughtfloodnohabitatanimalsdyingnaturaldisasterscoastalcitiessubmergedsealevelriseWhatotherconsequencesmayglobalwarmingbringabout?faminesnaturaldisasterseconomiclossescoastalcitiessubmergedextremeweatherunpredictablefutureofhumanWhatotherconsequencesmayglobalwarmingbringabout?globalwarminganimalsdyingEarthprovidesenoughtosatisfyeveryman’sneeds,butnoteveryman’sgreed.—MohandasK.Gandhi1.Whatisthedifferencebetween“needs”and“greed”?2.Howdoyouunderstandthequote?3.Howisitrelatedtothethemeoftheunit?Part2pre-reading1.Whatisthegraphabout?2.Whatinformationcanyougetfromit?Thegraphisaboutthechangeofglobalsurfacetemperature.Thetemperatureoftheglobalsurfaceroseabout1.2℃

from1920to2016.Theearthisbecomingwarmerandwarmer.1.Whathappenedtothepolarbearinthephoto?2.Whatmightbethestorybehindit?1.Thepolarbearinthephotodiedofstarvation.2.Thestoryisthatthepolarbearstarvedtodeathbecauseitcouldnotfindenoughtoeat.Whatisthepurposeofwritingthistext?Theauthor’spurposeistoinformthereadersandinspirethemtodowhatevertheycantodealwiththisproblem.1.What'sthetypeofthistext?A.Essay论文B.Biography传记C.Exposition.说明文D.Argumentation.议论文2.What'sitspurpose?ToinformreaderstodealwithclimatechangeTopersuadereaderstofocusonlimitedresources3.Inwhichpartofanewspaperormagazinemaywefindthispassage?A.EntertainmentB.EconomyC.EducationD.EnvironmentPart3While-readingPara1.Theinfluences

oftheriseintemperature.Para2.Thesolutionstoreducinggreenhousegasemissions.Para3.Anexactexampleofclimatechange.Para4.Aproblemofclimatechange.Para5.Thecausesoftheincreaseintheglobaltemperature.Readingformainidea.Rblemexamplereasonsinfluencessolutionsphenomenoncauseconsequencesolution[ɪkˈspɒzɪtərɪ]Expositorywriting1.What’sthefunctionofthefirstparagraph?A.Tointroducethetopic. B.Totellusclimatechangehasbeenknownfordecades.C.Toshowtheevidenceofclimatechange.D.ToconfirmthatEarthisgettingwarmerandwarmer.2.Whatistheevidenceofclimatechange?Para.1problem

Awarmingoceanandatmospherealongwithmeltingiceandrisingsealevels.Howclimatechangehaveinfluencedthepolarbear'slife?climatechangelowsea-icelevelsbearscouldnothunthadtotravelgreaterdistancestofindfoodstarvedtodeathitsdeadbodyfoundPara.2example1.What’sthemainideaofthethirdparagraph?2.Whyisthe“natural”greenhouseeffectimportantandnecessary?3.Whataretheconsequencesofhighgreenhousegasemissions?Highgreenhousegasemissionsleadtomoreheatenergybeingtrappedintheatmosphereandrisingtemperatures.The“greenhouseeffect”hastwocommonmeanings.BecauseitwarmstheEarth’ssurfaceandkeepsithabitable.Para.3causesFindthekeyprecessabout“greenhouseeffect”.GreenhouseeffectnaturalgreenhouseeffectkeepingEarth'sclimatewarmandhabitableman-madegreenhouseeffectcausingEarth’ssurfacetemperaturetorisequicklyiftoomuchheatenergyistrapped2.Drawamindmaptoshowtherelationshipofthisparagraph.Theriseintemperatureextremeweather/naturaldisastersextremerainstorms,heatwavesseriousdamage,costinghumanlives,economiclossesleadstoexamplesresults1.Whydidtheauthormentiontheclimatescientists’warning?Para.4influencesClimatescientistshavewarnedthatifwedonottakeappropriateactions,thiswarmingtrendwillprobablycontinueandtherewillbeahigherpricetopay.Whatcanwedotofightglobalwarming?Para.5solutions*Governments:makepoliciesandtakeappropriateactionsandmeasurestoreducegreenhousegasemissions*Individuals:restricttheamountofcarbondioxideourlifestylesproducetoreduceour“carbonfootprint”Part4Post-reading

Diagramsareveryusefultoolsthatcanbeusedtobrainstormidea,mapoutprocesses,showcauseandeffectrelationships,explainanewideaofconcept,andsoon.Whenyoureadanessayaboutscientificissues,youcantrydrawingadiagram,whichwillnotonlyallowyoutovisualizetheproblemsmoreclearlybutalsocanhelpdemonstrateyourcreativethinkingandproblem-solving.Tips:drawadiagram

Useadiagramdescribinghowthegreenhouseeffectworks.Heatenterstheatmosphere

ReflectedsunlightHeatreflectedbacktoearth’surfaceHeatreleasedbackintospaceThegreenhouseeffect1.Whatexamplesofextremeweatheranddisastersdoyouknow?

Makealistofthem.2.Doyouthinkitishumanactivitythatcausedglobalclimatechange?Giveyourreasons?Yes.Humanbeingsburntoomuchfossilfuelsandproducelargequantitiesofcarbondioxide,causingthetemperaturetogoupsteadily.Tsunami(