新人教選修6-Unit4-Global-warm課件

高二英語選修6

Unit4GlobalWarming

Reading

高二英語選修6

Unit4GlobalWarming11.Comparedtothepastfewyears,what’stheweatherlikethisyear?2.Doyouwanttocheckitout?Herearesomepicturesbasedontheactuallifescenesintheseyearsforyoutoreferto.Questions1.Comparedtothepastfewyea2新人教選修6-Unit4-Global-warm課件3Inaddition,youmayturntoGraph1.onPage26tofindoutthechangesofthetemperaturesfromlong-termaverage.

Question:

Doyouthinkthewholeworldisbecomingwarmerandwarmer?Butdoesitmatter?Thisisthetopicwearegoingtodiscussfortoday.Inaddition,youmayturntoG4Unit4GlobalWarmingReadingTheEarthIsBecomingWarmer–ButDoesItMatter?Unit4GlobalWarming5FastReadingGlancequicklyatthemagazinearticleandanswerthequestions.FastReadingGlancequicklyat6SophieArmstrongwrotethemagazinearticle.Thenameofthemagazineis“Earthcare”.2.Whatarethenamesofthethreescientistsmentionedinthearticle?TheyareDr.JaniceFoster,CharlesKeelingandGeorgeHambley.1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?SophieArmstrongwrotethemag73.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?Theydon’tagreewitheachother.Somethinktheeffectswillbeterrible,whilesomeothersbelievethatweshouldnotworryaboutit.Dr.JaniceFosterthinkstheeffectsofglobalwarmingcouldbeveryserious.GeorgeHambleythinksglobalwarmingwillbemildwithfewbadenvironmentalconsequences.3.Whatdotheythinkaboutglo84.Whatarethetwographsabout?Graph1

showsthetemperatureincreaseofonedegreeFahrenheitfrom1860to2000.5.Whatisthemaintopicofthearticle?Globalwarming/Thewarmingoftheearth.Graph2

isaboutthecarbondioxidecontentintheatmospherefrom1957to1997.4.Whatarethetwographsabou9TrueorfalseReadthearticlecarefullyandfinishPart2onPage27Trueorfalse101.Thetemperaturelastcenturydidn’tincreasemuch.()2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.()3.JaniceFosterbelievesthatglobalwarmingiscausedbyburningfossilfuels.()4.Naturalgasisagreenhousegas.()5.Carbondioxideisabyproductofburningfossilfuels.()FFTFTFFTFT116.PeopleacceptCharlesKeeling’sdatabecausehetookaccuratemeasurements.()7.Floodingcouldbeoneoftheeffectsoffutureglobalwarming.(

)8.GeorgeHambleybelievesscientistsarejustguessingabouttheeffectsofglobalwarming.()9.GeorgeHambleyisworriedabouttheeffectsofcarbondioxideonplantgrowth.()10.Itisclearwhattheeffectsofglobalwarmingwillbe.()TTTFF6.PeopleacceptCharlesKeelin12

CarefulReading1.Readthetextagainandtrytogetthemainideaofthearticle.Careful13Themainideaofthepassage:Part1(Paragraphs1)Part2(Paragraphs2-4)

Part3(Paragraphs5-10)

IntroduceadebateovertheissueofglobalwarmingIllustratehowglobalwarmingcomesaboutListtwodifferentattitudesamongscientiststowardsglobalwarmingThemainideaofthepassage:14Part4(Pa11)It’suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornotPart4(Pa11)It’suptoreader15Questions

Howhastheglobalwarmingcomeabout?QuestionsHowhastheglobal16①Humanactivityburningoffossilfuels.①Humanactivityburningof17②Greenhouseeffectgreenhousegasesweneedthosegases.新人教選修6-Unit4-Global-warm課件18③WeaddhugequantitiesofextracarbondioxidetotheatmospherebyburningFossilfuels.Thecarbondioxidecontentoftheatmospherewentupfromaround315partspermilliontoaround370partspermillionfrom1957to1997(SeeGraph2onPage26)③Weaddhugequantitiesofex19ThetwodifferentviewpointstowardstheeffectsofglobalwarmingbetweenDr.JaniceFosterandGeorgeHambley

Dr.JaniceFosterGeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto__________.Anincreaseoffivedegreeswouldbea____________andcouldbe______________.Morecarbondioxideisa__________thing,whichmakescrops__________andwillencourage____________________.goupcatastropheveryseriouspositiveproduceagreaterrangeofanimalsThetwodifferentviewpointst20Ofthetwoideas,whichareyouinfavorof?

TheDrJaniceFoster’s.

Why?Becausewehavewitnessedalargenumberofdisasterspredictedbysomepeople.Ofthetwoideas,whichareyo21

Whataretheeffectsanddisastersofglobalwarming?新人教選修6-Unit4-Global-warm課件22What’sworse,theglaciers(冰川）oftheSouthPolearebeginningtocrack（破裂）TheglaciersofthePolesarestartingtomeltduetothe increasingtemperaturescausedbyglobalwarming.What’sworse,theglaciers(冰川）23tsunamiThesealeveltorise.tsunamiThesealeveltorise.24新人教選修6-Unit4-Global-warm課件25tornadostornados26SeverestormsdroughtsfaminesthespreadofdiseasesSeverestormsdroughtsfaminesth27destructionofspeciesdestructionofspecies28DicussionWhatshouldwedoabouttheterribleeffectsabove?DicussionWhatshouldwedoabo29..Trytoreducetheuseofmo