选修6unit4公开课上课讲义.ppt

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1、选修6unit4公开课NewWordsandexpressionstemperature温度onedegreeFahrenheit华氏一度explore探索humanactivities人类活动phenomenon现象subscribeto同意，赞成fossilfuels矿物燃料byproduct副产品“greenhouse”gases温室气体atmosphere大气methane甲烷，沼气degreeCelsius摄氏度quantitiesof大量的accuratemeasurements精确的测

2、量data资料，数据catastrophe大灾难beopposedto反对environmentalconsequences环境影响agreatrangeof大量的evenif即使keepon继续SkimmingSkimthetitle:THEEARTHISBECOMINGWARMER–BUTDOESITMATTER?Whatisthemaintopic?Theearth.B.Globalwarming.C.Becomingwarmerdoesn’tmatter.Thestructureofthe

3、article:IntroductionAtitleBodyConclusionSkimthebodypart(7paras):Para.1Para.2-3IIIPara.4-6IIIPara.7IVIntroductionBodyConclusionMatchthemainideaofeachpart:Explainhowglobalwarmingcomesabout.Twodifferentattitudesamongscientiststowardstheconsequencesofgloba

4、lwarming.Introducetheproblemofglobalwarming.Giveawarningandraiseaquestionforthereaderstothinkover.I(1)II(2-3)III(4-6)IV(7)Whowrotethearticle?Whatisthenameofthemagazine?Carefulreading:thefirstparagraph:SophieArmstrongEarthCarePartII(Para2-3)Everyonebeli

5、evesthatglobalwarmingiscausedbytheactivitiesofhumans.JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature.GreenhouseGasesaretotallybad.FTF1.Greenhouseeffectisanaturalp_______.______amountsofGreenhousegasesintheatmosphere.Buttheproblemb

6、eginswhenweaddhugeqofextracarbondioxidetotheatmosphere.Therefore,moreheatenergyistintheatmospherecausingtheglobaltemperatureto_________.FillintheblanksaboutthecausesofGreenhouseeffect.henomenonuantitiesrappedgoupSmallPara4.thelevelsofcarbondioxidehavei

7、ncreasedgreatlyoverthelast100to150yearsWhomadeaccuratemeasurementsoftheamountofcarbondioxide?2.Howmuchhasincreased?CharlesKeelingThecarbondioxideintheatmospherewentupfromaround315partstoaround370partspermillion.Para5.Howhighwillthetemperaturego?Theamou

8、ntofwarmingcouldbeaslowas1to1.5degreesCelsius,butitcouldbeashighas5degrees.WhatdoDr.JaniceFosterandthescientistGeorgeHambleythinkabouttheconsequencesofglobalwarming?Dotheyagreewithoneanother?Para6Theydon'tagreewitheachother.Dr.JaniceFos