【课件】Unit+3Reading+and+Thinking人教版（2019）选择性必修第三册

Unit3EnvironmentalprotectionLesson2ReadingandThinkingInthisunit,youwill:l.readaboutdifferentenvironmentalissues.环境境问题2.listentoaninterviewwithanexpertandtalkaboutairpollution.3.writeareportonanenvironmentalissuesandwaystoprotectourplanet.LookanddiscussWhatenvironmentalissuesdoyouknow?Greenhouseeffect温室效温室效应Forestfire/Wildfire森林火灾森林火灾Airpollution空气空气污染染Drought干旱干旱Climatechange气候气候变化化Globalwarming全球全球变暖暖Lookatthegraph.Whatisitabout?Whatinformationcanyougetfromit?Whatcanyouseeinthephoto?Whatmightbethestorybehindit?Thetemperatureoftheglobalsurfaceroseabout1.2from1920to2016.Theearthisbecomingwarmerandwarmer.Whateffectsmaybecausedbytheglobalwarming?Before-writingskinandbones瘦得皮包骨Thepolarbear(北极熊北极熊)maydiedforlackingfood.1.Whatsthetypeofthistext?A.Essay论文文B.Biography传记C.Exposition.说明文明文D.Argumentation.议论文文2.Whatsitspurpose?A.ToinformreaderstodealwithclimatechangeB.Topersuadereaderstofocusonlimitedresources3.Inwhichpartofanewspaperormagazinemaywefindthispassage?A.EntertainmentB.EconomyC.EducationD.EnvironmentSkimmingReadingforthestructurePara1-2Para3Para4Para5TheevidenceofdramaticclimatechangethathadanimpactonEarthsecology.Thecauseoftheincreaseintheglobalaveragesurfacetemperature.Theconsequencesoftheriseintemperature.ThesolutionstoreducinggreenhousegasemissionsReadingforthestructurePara1-2Para3Para4Para5TheevidenceofdramaticclimatechangethathadanimpactonEarthsecology.Thecauseoftheincreaseintheglobalaveragesurfacetemperature.Theconsequencesoftheriseintemperature.ThesolutionstoreducinggreenhousegasemissionsproblemcauseconsequencessolutionsHowdoeswritershowtheeffectsofrisingtemperaturesduetoclimatechange?A.BylistingfiguresB.ByusingrhetoricaldevicesC.BylistingexamplesD.BymakingacomparisonCarefulreadingPart1:TheevidenceofdramaticclimatechangethathadanimpactonEarthsecology.Whataretheevidenceofadramaticchangeintheglobalclimate?AwarmingoceanandatmosphereMeltingiceRisingsealeveln.证据据AnewsphotoofadeadpolarbearCarefulreadingPart1:TheevidenceofdramaticclimatechangethathadanimpactonEarthsecology.Thefollowingreasonscontributetothedeathofthepolarbear.Q：Readparagraph2andputthefollowingeventsinacorrectlogicalorder:starvedtodeathbearscouldnothuntsealshadtotravelgreaterdistancestofindfoodclimatechangelowsea-icelevelsA.B.C.D.导致致ArootcauseclimatechangeCarefulreadingPart2:Thecauseoftheincreaseintheglobalaveragesurfacetemperature.Listenandtrytocirclethekeyverbsintheprocessofgreenhouseeffect.Whyisthe“natural”greenhouseeffectimportantandnecessary?A.BecauseitcausesEarthssurfacetemperaturetorisequickly.B.Becauseitisaffectedbyhumansactivities.C.BecauseitwarmstheEarthssurfaceandkeepsithabitableD.BecausesomeoftheheatradiatesisreleasedbackintospaceCarefulreadingPart2:Thecauseoftheincreaseintheglobalaveragesurfacetemperature.CarefulreadingPart3:Theconsequencesoftheriseintemperature.Whataretheresultsoftheriseintemperature?Couldyoulisttheexamplesfromthetext?Results:Theextremeweatherandnaturaldisastersroseworldwide,whichcausedseriousdamageandevencosthumanlives.Example:extremerainstorms(极端暴风雨),heatwaves(热浪).cost v.使使丧失失led to 导致致cause-effect(因果因果)表达积累：表达积累：描写结果（表描写结果（表“导致导致”）+句子：so;mean.;therefore,.;asaresult/consequence,.;consequently,.;+名词：cause,leadto,resultin,bringabout,accountfor,contributeto,beresponsiblefor.描写原因（表描写原因（表“因为因为”）+句子：as.,since.,(nowthat.)+名词：dueto,owingto,causedby,resultfrom,with/without.,onaccountof.,asaresultof.,asaconsequenceof.,.betoblame,Whydidtheauthormentiontheclimatescientistswarning?CarefulreadingPart3:Theconsequencesoftheriseintemperature.Theauthormentionedtheclimatescientistswarningbecauseitisessentialthatwetakeactionandsoitneedstobebroughttoeveryonesattention.Whatcanwedotofightglobalwarming?CarefulreadingPart4:ThesolutionstoreducinggreenhousegasemissionsCarefulreadingPart4:ThesolutionstoreducinggreenhousegasemissionsGovernmentsIndividuals1.makepolicies2.takeappropriateactionsandmeasurestoreducegreenhousegasemissionsrestricttheamountofcarbondioxideourlifestylesproducetoreduceour“carbonfootprint”Asmallactioncanmakeabigdifference!SummaryWhatiscausingtheincreaseintheglobalaveragesurfacetemperature?Climatescientistsoftenmentionakeyclimateprocess1_(call)the“greenhouseeffect”,whichhastwocommonmeanings:the“natural”greenhouseeffectandthe“man-made”greenhouseeffect.The“natural”greenhouseeffectreferstothefact2_heatfromthesunenterstheatmosphereandwarmsEarthssurfaceasshort-waveradiation.Theheat3_(release)backintospaceatlongerwavelengths.Greenhousegasesintheatmosphere,suchasmethaneandcarbondioxide,trapsomeoftheheat,keepingEarthsclimatewarmandhabitable.4_thisprocess,Earthcouldnotsustainlife.However,the“man-made”greenhouseeffecthasnowbecome5_bigproblem.calledthatisreleasedWithoutaRetellingWhenpeopleproducehugeamountsofextragreenhousegasesbyburningfossilfuels,moreheatenergyistrappedintheatmosphereandcausesEarthssurfacetemperature6_(rise)quickly.Thereisstrongandcomprehensiveevidencethattheriseintemperature7_(lead)toanincreaseinextremeweatherandnaturaldisastersworldwide,notonlycausingseriousdamage,butalsocostinghumanlives.Climate8_(scient