Global warming.ppt

,agreenhouse,Agreenhouseismadeof_andisusedfor_,especiallyduring_weather.,growingplants,glass,cold,Howdoesagreenhousework?,greenhouseeffect,greenhousegases,Theearthisbecomingwarmer-Butdoesitmatter?,Unit4Reading,Wheresthepassageprobablyfrom?A.AsciencefictionB.AtraveljournalC.AnenvironmentalmagazineD.Ahealthmagazine,Task1,Whatisthewritingstyle?A.Narrative(记叙文）B.Expository(说明文）C.Argumentative（议论文）D.Descriptive（描写文）,Task2,1.Howmanypartscanthepassagebedividedinto?2.Whatiseachofthemabout?,Task3,Task4(Part),Whatstherightorder?,1,Globalwarming,2,Greenhousegases,1,Humanactivity,3,Greenhouseeffect,Therightorder_,FossilFuels:,coal,oil,gas,globalwarming,greenhousegases,energy,Howhasglobalwarmingcomeabout?,Whatdothetwographsshowus?,Whatarethedifferentattitudestowardsglobalwarming?,Task5(Part),Part3(6-7),Dr.JaniceFoster,GeorgeHambley,pessimistic,optimistic,Part3(6-7),ariseintheseelevel,severestorms,droughts,floods,optimistic,Itwillcause:,pessimistic,Itisa_thing,whichmakesplantsgrow_;cropswillproduce_;itwillencourageagreaterrangeof_allofwhichwillmakelife_.,positive,quicker,more,animals,better,Dr.JaniceFoster,GeorgeHambley,Task6,Thetemperaturelastcenturydidntseemtoincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3.Greenhouseeffectisalwaysabadphenomenon.4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.5.Itisclearwhattheeffectsofglobalwarmingwillbe.,T,F,T,T,F,Howmuchdoyouknowaboutglobalwarming?,Reflection1,Whatshouldwedoaboutglobalwarming?,Reflection2,Wehavealottodo,Protecttheearth,protectthehome!,Homework,Readthepassageagainandreviewthenewwordsandexpressions.SurftheInternetformoreinformationaboutglobalwarming.,Afewwebsitesforreference,CaliforniaEnergyCommission:UnitedStatesEnvironmentalProtectionAgency:/globalwarming/kidsAlternativeEne