河北省尚义县第一中学高中英语选修六《Unit4GlobalWarming》导学案

Book6Unit4GlobalWarmingLearning&teachingaims:1.Todevelopsomereadingabilities.2.Tolearnaboutthemaininformationofthepassage.3.Todevelopthesenseofenvironmentalprotection.课前预习：1.化石燃料______________2.副产品__________________3.5.甲烷，沼气_______________6.自然现象__________________7.发生;造成________________8.大量的____________________9.上升;增长;升起______________10.导致_____________________11.同意;赞成;……_________________课内探究I.Warming-up；Pre-readingII.Scanning:1.Whatismainlydiscussedinthepassage?

A.Whathascausedtheglobalwarmingandwhetheritmatters.

B.Whateffectsoftheglobalwarmingwillbe.

C.Howserioustheglobalwarmingcouldbe.

D.Whattheglobalwarmingis2.Wheredoesthisarticlemostprobablycomefrom?A.NewspaperB.NovelC.Magazine3.Whatarethetwographsabout?4.Findoutthetopicsentenceofeachparagraph5.Matchthemainideaofeachpart.Part1(Para1) Howglobalwarmingcomesabout?Part2(Para2&5) Twodifferentopinionsaboutglobalwarming.Part3(para6) Shouldwedoanything?Part4(Para7) Theearthisbecomingwarmer.III.Skimmingandansweringthefollowingquestions.1.Whofoundouttheamountofcarbondioxideintheatmospherefrom1957to1977?A.DrJaniceFosterB.CharlesKeelingC.GeorgeHambleyD.SophieArmstrong2.WhichofthefollowingisNOTtrueaccordingtothepassage?A.Thetemperatureinthelastcenturydidn’tseemtoincreasemuch.B.Everyonebelievesthatglobalwarmingcausedbytheactivitiesofhumans.C.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.DJaniceForsterbelievesthatshecanpredictfutureglobalriseintemperature.IV.CarefulReadingPart11.Whowrotethemagazinearticle?2.Whatisthenameofthemagazine?3.What’sthemeaningoftheword“explore”inLine.4?4.Thepurposeofthefirstparagraphisto___.A.introducethewriterB.explainachangeC.introducethetopicD.raiseaquestionpart21.Whatisthecauseofglobalwarming?2.Whoistoblamefortheglobalwarming?Humanactivity?Ornaturalphenomenon?3.Thegraphsareusedto_____.A.illustratepointsbyprovidingevidenceB.tellthechangeoftemperatureC.tellthecontentofcarbondioxideintheairD.interestthereaders4.FillintheblanksaboutthecausesofGreenhouseeffect.Greenhouseeffectisanaturalp.Greenhousegasesintheatmospherecanwarmtheearthbytrappingheatenergy.Buttheproblembeginswhenweaddhugequantitiesofextracarbondioxidetotheatmospherebyburningfossilf.Therefore,moreheatenergyistintheatmosphere.Itistheincreasedamountofcarbondioxidethatisringlobalwarming.Part3(Para.6):twodifferentattitudesBadeffectsGoodeffectsV.SummaryThereisno1thattheearthisbecomingwarmernomatterwhetherisanatural2____.Scientistsbelievethat“greenhouseeffect”beginswhenweaddhuge3Extracarbondioxidetotheatmospherebyburning4.Theincreased5.carbondioxideiscausingthe6temperaturetogoup.Scientistsalsoagreethattheburningofmoreandmorefossilfuelshas7Thisincreaseincarbondioxide.Anincreaseoffivedegreeswouldbea8.Scientistscan’tpredictthe9wellenoughtoknowwhattoexpect.Ontheotherhand,ascientist,GeorgeHambleypredictsthatanywarmingwillbemildwithfewbadenvironmental10.He11thatmorecarbondioxidewillencourageagreater12ofanimals---allofwhichwillmakelifeforhumansbetter.However,greenh