人教版 英语选修6第四单元

Unit4GlobalwarmingReading,Pre-reading,1.Haveyoueverseenagreenhouse?,2.Howdoesthegreenhousework?,Theairinsidewaswarmbecausetheglasstraps(挡住,吸收)theheatfromthesunandkeepsitfromescaping(逃跑).Thismakesthegreenhouseheatup(热量上升)andsotheplantscangrowthroughout(在期间)thecoldperiod.,4.GreenhouseEffect,Globalwarming,Greenhousegasestrappedtheheatfromthesun,whichcausesthetemperatureofearthgoesup.,THEEARTHISBECOMINGWARMERBUTDOESITMATTER?,Reading,1)Howmanyparagraphsdoesthereading2)Makeadivisionofthetext.,Readthepassagequickly(3),textconsistof?Pleasenumberthem.,Fast-Reading,Mainideasofeachpart:,Part1(1),Introduceadebateovertheissueofglobalwarming.,raisingaquestion,Part2(2-5),Howglobalwarmingcomesabout.,givingexamples,usinggraphs,explanation,Listtwodifferentattitudesamongscientiststowardsglobalwarming.,Itsuptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot.,givingexamples,makingcontrast,leavingaquestion,Aretheriskstoogreat?,Socanyoupredictthefutureoftheglobalwarming?,Whowritesthisarticle?SophieArmstrongofEarthCareWhatroseaboutonedegreeFahrenheit?Thetemperatureoftheearth,Carefulreading,Part1(1),Introductionofglobalwarming.,2._,1._,Part2(2-5),Howglobalwarmingcomesabout?,theburningoffossilfuels,humanactivity,Carbondioxide,Methane,WhataretheGreenhousegases?,1.2.3.,Watervapor,Part3(6-7),Whataretheeffectsofglobalwarming?,ariseinthesealevelSeverestorms,droughts,famines,thespreadofdiseases,andthedisappearanceofspeciesMakeplantsgrowfaster,effects,Readandanswerthequestions.1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?2.Whatarethenamesofthethreescientistsmentionedinthearticle?,1.SophieArmstrong,EarthCare.,2.DrJaniceFoster,CharlesKeeling,GeorgeHambley.,3.Whatdothethreescientiststhinkaboutglobalwarming?,believesitistheburningofmoreandmorefossilfuelsthatisresultinginabigincreaseincarbondioxide.,Dr.JaniceFosterGeorgeHambleyCharlesKeeling,thinkstheeffectsofglobalwarmingcouldbeveryserious(严重的).,thinksglobalwarmingwillbemildwithfewbadenvironmentalconsequences.,ThedifferentideasbetweenDr.JaniceFoster&GeorgeHambley,goup,catastrophe,veryserious,positive,produce,agreaterrangeofanimals,4.Whatarethetwographsabout?,ThefirstgraphshowsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.Thesecondgraphshowsthecarbondioxidecontentintheatmospherefrom1957to1997.,5.Whatisthemaintopicofthearticle?,Globalwarming/thewarmingoftheearth.,1.Whofoundouttheamountofcarbondioxideintheatmospherefrom1957to1977?A.Dr.JaniceFoster.B.CharlesKeeling.C.GeorgeHambley.D.SophieArmstrong.,B,Choosethebestanswer.,2.WhichofthefollowingisDrJaniceFostersopinion?A.Theresultofthetemperatureincreasewillbeserious.B.Theamountofwarmingisnothingserious.C.Weneedntworryabouthighlevelsofcarbondioxide.D.Globalwarmingisanaturalphenomenon.,A,3.WhichofthefollowingisTRUEaccordingtothetext?A.ThetemperatureoftheearthincreasedaboutonedegreeFahrenheitduringthe20thcentury.B.Thecarbondioxidecontentintheairincreasedby70partspermillionfrom1957to1997.C.Allscientistsacceptthedataingraph2exceptCharlesKeeling.D.JaniceFostersaysthatmorecarbondioxidewillmakeplantsgrowfaster.,A,4.Theauthorprobablyagreesthat_A.actuallyglobalwarmingisgoodforman.B.weshoulddonothingabouttheglobalwarming.C.catastropheswillhappeniftheglobekeepsonwarming.D.alotremainstobefoundoutabouttheeffectsofglobalwarming.,D,Trueorfalse?1.Thetemperatureinthelastcenturydidnotseemtoincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3.JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature.,T,T,F,4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.5.GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtotheearth.6.Itisclearwhattheeffectsofglobalwarmingwillbe.,T,T,F,A:Weshalldosomethingaboutglobalwarming.,B:Weshalldonothingaboutglobalwarming.,Debate,Whatweshoulddoto