人教版高中英语Book6Unit4GlobalwarmingWarmingupandReading教学课件(共28张)

人教版高中英语Book6Unit4GlobalwarmingWarmingupandReading教学课件(共28张)第一页，共29页。Warmingup1.Thingsthatuseenergy2.Sourcesofenergy3.Renewable/non-renewable

高二Book6Unit4GlobalwarmingMakealistof……第二页，共29页。1.Thingsthatuseenergy:2.Sourcesofenergylightheatingfridgestovewashingmachinehairdryertelevisioncassetteplayervideorecorder

computer

coaloilnaturalgaswind(windpower)sun(solarenergy)uranium(nuclearenergy)water(hydro-electric)thesea(tidalenergy)第三页，共29页。3.Renewable/non-renewableRenewableEnergyRenewableenergysources,suchasthesun,wind,rain,andplantmatter,naturallyandcontinually"renew"themselves.第四页，共29页。Renewableornon-renewable?第五页，共29页。Renewableornon-renewable?第六页，共29页。Pre-reading1.Whatisthegreenhousemadeofandusedfor?2.Howdoesitwork?3.Whatarethe“greenhousegases”?4.Whatdoyouthinkgreenhousegasesdo?第七页，共29页。Whatisthegreenhousemadeofandusedfor?第八页，共29页。Agreenhouseismadeofglassandisusedforgrowingplants,especiallyduringcoldweather.第九页，共29页。Howdoesitwork?

Theairinsideiswarmbecausetheglasstrapstheheatfromthesunandkeepsitfromescaping.Thismakesthegreenhouseheatupandsotheplantscangrowthroughoutthecoldperiod.第十页，共29页。Whatarethe“greenhousegases”?

Intheatmospheresurroundingtheearththerearegases,whicharecalled“greenhousegases”,includingcarbondioxide,methane(甲烷,沼气)andwatervapor.第十一页，共29页。Whatdoyouthinkgreenhousegasesdo?

Theytrapheatfromthesunandthereforewarmtheearth.第十二页，共29页。MainideasofeachpartWritingtechniques(Paragraph1)Introduceadebateovertheissueofglobalwarming.RaisingaquestionReading

第十三页，共29页。MainideasofeachpartWritingtechniques(Paragraphs2---3)Illustratehowglobalwarmingcomesabout.Givingexamples,usinggraphs,explanation.第十四页，共29页。(Paragraphs4---5)Listtwodifferentattitudesamongscientiststowardsglobalwarming.Givingexamples,makingcontrast.

第十五页，共29页。(Paragraph6)

It'suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot.Usingaquestion,leavingreaderstothinkovertheissue.

第十六页，共29页。Readthetextcarefullyandfillintheblanks.ScientistsOpinionJaniceFoster◆Weneed1______likecarbondioxide,methaneandwatervapour,butifweaddhuge2__________extracarbondioxidetotheatmospherebyburningfossilfuels,itwillcausethe3________________togoup.gasesquantitiesofglobaltemperature第十七页，共29页。ScientistsOpinionJaniceFoster◆Overthenext100yearstheamountofwarmingcouldbeaslowas1to1.5degreesCelsius,butitcouldbeashighas5degreesCelsius.◆Anincreaseoffivedegreeswouldbea4____________.catastrophe第十八页，共29页。ScientistsOpinionsGeorgeHambley◆Believesthatweshouldn’tworryabout5__________ofcarbondioxideintheair.◆Predictsthatanywarmingwillbemildwithfewbadenvironmental6___________.◆7_______thatmorecarbondioxideisactuallya8________thing,whichwillmakelifeforhumanbeingsbetter.highlevelsconsequencesStatespositive第十九页，共29页。Choosethebestanswers.1.WhichofthefollowingisTRUEaccordingtothetext?A.ThetemperatureoftheearthincreasedaboutonedegreeFahrenheitduringthe20thcentury.B.Thecarbondioxidecontentintheairincreasedby70partspermillionfrom1957to1997.C.Allscientistsacceptthedataingraph2exceptCharlesKeeling.D.JaniceFostersaysthatmorecarbondioxidewillmakeplantsgrowfaster.A第二十页，共29页。2.WhichofthefollowingisDrJaniceFoster’sopinion?A.Theresultofthetemperatureincreasewillbeserious.B.Theamountofwarmingisnothingserious.C.Weneedn’tworryabouthighlevelsofcarbondioxide.D.Globalwarmingisanaturalphenomenon.A第二十一页，共29页。Glancequicklyatthemagazinearticleandanswerthequestions.Whowrotethemagazinearticle?Whatisthenameofthemagazine?

SophieArmstrongwrotethemagazinearticle.ThenameofthemagazineisEarthCare.Comprehending第二十二页，共29页。Whatarethenamesofthethreescientistsmentionedinthearticle?

TheyareDr.JaniceFoster,CharlesKeelingandGeorgeHambley.第二十三页，共29页。3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?

Theydon'tagreewitheachother.Dr.JaniceFosterthinkstheeffectsofglobalwarmingcouldbeveryserious.第二十四页，共29页。

GeorgeHambleythinksglobalwarmingwillbemildwithfewbadenvironmentalconsequences.

CharlesKeelingbelievesitistheburningofmoreandmorefossilfuelsthatisresultinginabigincreaseincarbondioxide.第二十五页，共29页。Whatarethetwographsabout?

GraphI

showsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.

Graph2isaboutthecarbondioxidecontentintheatmosphere,1958--1990.第二十六页，共29页。Whatisthemaintopicofthearticle?

Globalwarming/thewarmingoftheearth.第二十七页，共29页。1.Thetemper