高中英语Unit 4 Global warming-section 1VIP免费

Unit4Globalwarming-section1PartTwo:TeachingResources(第二部分：教学资源)Section1:AtextstructureanalysisofTHEEATHISBECOMINGWARMER—BUTDOESITMATTER?I.TypeofwritingandsummaryofthetextTypeofwritingThisisapieceofdescriptivewriting.MainideaofthepassageIttellshowtherisingofearth’stemperaturecomesaboutandhowpeopleresponddifferentlytoit.Keyphraseof1stparagraphadebateovercausesofglobalwarmingKeyphraseof2ndparagraphcarbondioxidebeingoneof“greenhouse”gasesKeyphraseof3rdparagraph“greenhouseeffect”causingglobaltemperaturetogoupKeyphraseof4thparagraphlevelsofcarbondioxideupoverthelastcenturyKeyphraseof5thparagraphdifferentattitudestowardsthecausesKeyphraseof6thparagraphwarmingtobeaslowas1to1.5degreesCelsiusorasmuchas5degreesCelsiusKeyphraseof7thparagraphanincreaseoffivedegreesbeingacatastropheKeyphraseof8thparagraphfuturewarmingcausingthesealeveltoriseKeyphraseof9thparagraphwarmingtobemildwithfewbadenvironmentalconsequencesKeyphraseof10thparagraphmorecarbondioxidetobeapositivethingKeyphraseof11thparagraphtheeffectsofglobalwarmingbeinguncertainII.Adiagramofthetext用心爱心专心116号编辑Para2developerPara3developerPara4developerPara8developerPara5modulatorPara1introduceriPara6developerPara7developerPara9developerPara10developerIII.AretoldversionofthetextAdebateisgoingonoverwhetheritishumanactivitythathascausedtheglobalwarmingorwhetheritisjustanaturalphenomenon.Manyscientistsbelievethatitishumanactivitythathascausedtheincreaseintheearth’stemperature.Theythinkthattheincreasedextraamountofcarbondioxideistrappingmoreheatenergy,thuscausingtheglobaltemperaturetogoup.Itisbelievedthatthelevelsofcarbondioxidehaveincreasedgreatlyoverthelast100to150years.However,therearesomedifferentattitudestowardsthecausesofthisincreaseincarbondioxide.Ononehand,somescientistsfindthat,overthenext100years,theamountofwarmingcouldbeaslowas1to1.5degreesCelsius,butitcouldbeasmuchas5degreesCelsius.Theythinkthatanincreaseoffivedegreeswouldbeacatastrophe.Itispossible,intheiropinions,futurewarmingwouldcausethesealeveltorisebyseveralmeters.Ontheotherhand,someotherscientistspredictthatanywarmingwillbemildwithfewbadenvironmentalconsequences.Theyareconvincedthatmorecarbondioxideisinfactapositivething.Whatiscertainisthatatpresentnooneknowswhattheeffectsofglobalwarmingwillbe.用心爱心专心116号编辑Para11terminator