人教课标版高中英语选修6 UNIT 4 Global warming warming up and reading 课件.ppt

Unit4,Globalwarming,-warmingupandreading,stove,light,thingsthatuseenergyinyourhome,micro-waveoven,cassetteplayer,heating,television,hairdryer,videoplayer,fridge,computer,washingmachine,stove,Warmingup,Windenergyisusedaspowertoproduceelectricity.,Windmills,TheOilRefineries,inwhichoilisrefinedandmadepure.,whereelectricityisproducedbyburningcoals.,Thecoalpowerstations,Anuclearpowerplant,designedtoconvertnuclearenergyintoelectricity.,areusedtocollectsolarenergy,makingyourhousewarmorheatingyourwater.,Solarpanels,areusedtokeepbackwaterandraiseitslevelforirrigationorforproducingelectricity,etc.,TheHydro-electricdams,Anenergysourceis“renewable”whensuppliesofitneverrunoutand“non-renewable”whenonedaytheywillrunout.Whichenergysourcesdoyouknowarerenewableandwhicharenon-renewable?,Discuss,non-renewable,renewable,Whatarethesebuildingsmadeofandwhataretheycalled?,Whatstheuse?,glass/greenhouse,Agreenhouseisusedforgrowingplants,especiallyduringcoldweather.,Theglasstrapstheheatfromthesun,makingtheairwarmsothatplantscangrowbetter.,Trapsth:keepsthinaparticularplace留住,存住,Howdoesitwork,?,Greenhousegases?,Intheatmospheresurroundingtheearththerearegases,whicharecalled“greenhousegases”,mainlyincluding_,andwatervapor(水蒸气).,carbondioxide,CarbondioxideMethaneWatervapour,Whatdoyouthinkgreenhousegasesdo?,Greenhousegasesperformthesamefunctionasthe_inagreenhouse-They_theheatofthesunandtherefore_theearth.Itisknownas_.,Nowadaysourearthisbecoming_.,greenhouseeffect,trap,warm,warmerandwarmer,glass,TheEarthIsBecomingWarmerButDoesItMatter?,FastReading,1.Thisarticleisfrom_amagazinetheinternetanewspaper,Ithasatitle;afirstparagraphthatrunsacrossthepageandisinbold;themaintextintwocolumns;twographs/diagrams;twoquotes.,2.Whatisthestructureofamagazinelikethisandhowisthetextorganized?,3.Whatisthepurposeoftheparagraphthatisinbold?,Tointroducethetopic.,Toillustrate(阐述)pointsbyprovidingevidence.,4.Whatarethediagramsfor?,5.Whyaretheretwoquotes?,Becausetheyareimportantorinterestingpoints.Theiraimistoattractyourattentionandtomakeyoureadthem,andthereforetomakeyouinterestedenoughtoreadthewholearticle.,Itfunctionsasaconclusionbyaskingthereadertoreflectonthemajorthemeofthetextandtopredictwhatmighthappeninthefuture.,6.Whatisthepurposeofthelastparagraphofthearticle?,GlanceandAnswer!,1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?2.Whatarethenamesofthethreescientistsmentionedinthearticle?3.Whatisthemaintopicofthearticle?,4.Whatarethetwographsabout?,Graph1showsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.,Graph2showsthecarbondioxidecontentintheatmospherefrom1957to1997.,Graph1:,Graph2:,Detailed-Reading,Readthearticleindetailsandfinishthefollowingtask.,1.Thetemperaturelastcenturydidntincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3.JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature.4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.5.GeorgeHambleybelievesthatgloblewarmingwilldogoodratherthanharmtotheearth.6.Itisclearwhattheeffectsofglobalwarmingwillbe.,Task1Trueorfalse?,T,T,F,T,T,F,Task2Questionnaires-I,1.DoesSophieArmstrongsupportaclearopinionaboutthequestioninthetopic?2.DoesGeorgeHambleybelievethatweshouldworrymuchabouttheglobalwarming?,No.hedoesntstateitclearly.,No,hedoesnt.,4.Whataretheeffectsofglobalwarming?,Encourageagreaterrangeofanimals.,Thesealeveltorise.,Severestorms,droughts,famines,thespreadofdiseases,anddestructionofspecies.,Makeplantsgrowfaster.Cropswillproducemore.,5.ThedifferentideasbetweenDr.JaniceFostercropswillproducemore;itwillencourageagreaterrangeofanimals-allofwhichwillmakelifeforhumanbeingsbetter.,Discussion:Whataretheeffectsofglobalwarming?,Postreading,Debate,Weshoulddosomethingaboutglobalwarming.,Weshoulddonothingaboutglobalwarming.,GroupA:,GroupB:,PK,3.Howhastheglobalwarmingcomeabout?,Humanactivity-burningoffossilfuels.,Greenhouseeffect-greenhousegases-weneedthosegases.,Hugequantitiesofextracarbondioxide-from1957to1997-fromaround315partspermilliontoaround370partspermillion.,Goodpoints:,1.Makeplantsgrowfaster,2.Cropswillproducemore,3.Encourageagreaterrangeofanimals,Badpoints:,1.Thesealeveltorise,2.Severestorms,droughts,floods,famines,thespreadofdiseasesan