人教版选修6unit4reading.ppt

1 Wordsstudy Globalwarming Unit4 Pre reading readingI Doyouknowanythingthatconsume 消耗 energyinthehomeandtheclass Doyouknowanykindofenergyresource Warmingup lights television computer washingmachine hairdryer camera wind coal oil nuclearpower solarpower water 4 renewable可再生的 renewable renewable non renewable不可再生的 non renewable non renewable Whatisthegreenhousemadeandusedfor Greenhouse Agreenhouseismadeofglassandisusedforgrowingplants especiallyduringcoldweather GreenhouseEffect温室效应 8 traptheheatfromthesun keepitfromescaping warm Agreenhouse Howdoesitwork 9 Howdoesthisglobalwarmingcomeabout Manburnsfossil producehugequantitiesofgreenhousegases esp thegasestraph fromthesunandthereforew theearth fuels carbondioxide heat warm Greenhouse GreenhouseEffect Greenhousegases Globalwarming reasons Arisingpopulation Theuseofenergy Greenhousegases Burningoffossilfuels coal oilandnaturalgas Agriculturalindustry Destructionofforests 11 Skimthearticle Whatarethenamesofthethreescientistsmentionedinthearticle Whowrotethearticle Whatisthenameofthemagazine FastReading 12 Whatisthewritingstyle A Expositive 说明文 B Practical 应用文 C Argumentative 议论文 D Narrative 记叙文 Theorganizationofanexpositiveessay Introduction Atitle Body Conclusion Para 1 Para 2 6 Para 7 13 Lookthroughthemaintext Para 1 Para 2 5 I II Para 6 III Para 7 IV Introduction Body Conclusion 14 Matchthepartswiththemainideas Explainhowglobalwarmingcomesabout Listtwodifferentattitudesamongscientiststowardsglobalwarming Introducethetopicofglobalwarming It suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot Part1 Part2 Part4 Part3 15 Matchthepartswiththewritingskills Usingaquestion leavingreaderstothinkovertheissue Raisingaquestion Givingexamples makingcontrast comparison Givingexamples usinggraphs explanation Part1 Part4 Part3 Part2 16 evidence evidenceorargument Readthe2graphs Detailedreading 17 The1stgraphshowstheglobaltbetween1860and ThetemperatureianddecreasedoverthisperiodbutonthewholeitibyaroundonedegreeFahrenheit Duringthistime theearthreacheditsltemperatureinabout1910anditshighestin Therewasasteadyincreaseinthetemperatureduringthe20yearsafter1980 Wecanseefromthegraphthattheearthhasbecomewsinceearlylastcentury emperature 2000 ncreased ncreased owest 2000 armer Detailedreading Readsomethingmoreaboutthe2graphs 18 The2ndgraphshowstheamountofcdintheatmospherefromto1997 TheCO2csteadilyioverthisforty yearperiod Itwentupfrom315topartspmillion arbon ioxide 1957 ontent ncreased 370 er Tip Whilereadingagraph you dbetterpayattentiontothenumbers Detailedreading 19 Trueorfalse P2 ReadingComprehension 2 1 Thetemperatureinthelastcenturydidn tseemtoincreasemuch 2 Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans 3 JaniceFosterbelievesshecanmeasurethefutureglobalriseintemperature 4 Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming 5 GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtotheearth 6 Itisclearwhattheeffectsofglobalwarmingwillbe 20 Whatdothe3scientiststhinkaboutglobalwarming Dotheyagreewithoneanother Readthearticlecarefully Theydon tagreewithoneanother Detailedreading 3 Whatdotheythinkaboutglobalwarming Dotheyagreewithoneanother Theydon tagreewitheachother Dr JaniceFosterthinkstheeffectsofglobalwarmingcouldbeveryserious GeorgeHambleythinksglobalwarmingwillbemildwithfewbadenvironmentalconsequences CharlesKeelingbelievesitistheburningofmoreandmorefossilfuelsthatisresultinginabigincreaseincarbondioxide UsinglanguageWhatcanwedoaboutglobalwarming Turna n offwhenyou renotusingit Putonmoreclothesinsteadofturningupthe Walkor insteadoftakingmotorvehicles cans bottles plasticsandnewspapers Buythingsmadefrom Buyproductsthatareeconomicalwith inyourgardenoryourschoolyard Talkwithyourfamilyandfriendsabout electricalappliance heat rideabike Recycle recycledmaterials energy Planttrees globalwarming 25 Theearthisbecomingwarmer Inyouropinion doesitmatter Discussion A Weshalldosomethingaboutglobalwarming