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1、Teachinggoals教学目标1.Targetlanguage目标语言a.重点词汇和短语compare,phenomenon,graph,fuel,trap,data,climate,catastrophe,consequence,range,per,glance,compareto,comeabout,fiercedebate,resultin,buildupb.重点句式Thereisnodoubtthattheearthisbecomingwarmer.P26Withoutthe‘greenhouseeffect’,theearthwouldbeaboutthirt
2、y-threedegreesCelsiuscoolerthanitis.P26Theyalsoagreethatitistheburningofmoreandmorefossilfuelsthathasresultedinthisincreaseincarbondioxide.P262.Abilitygoals能力目标Enablethestudentstotalkaboutthecausesandeffectsofglobalwarming.3.Learningabilitygoals学能目标Helpthestudentslearnhowtotalkaboutthecaus
3、esandeffectsofglobalwarmingandexpressideasaboutwhatpeopleshoulddoaboutit.Teachingimportantpoints教学重点Helpthestudentslearnhowtodebateoverthetopic“Weshoulddonothingaboutglobalwarming.”Teachingdifficultpoints教学难点Enablethestudentstolearnthewritingskillsofthetextandgetabetterunderstandingofartic
4、lesofthiskind.Teachingmethods教学方法Listening,readingandgroupwork.Teachingaids教具准备Arecorderandacomputer.Teachingprocedures&ways教学过程与方式StepⅠRevisionCheckthehomework.Reviewtheusefulexpressionsaboutagreementanddisagreement.Showthestudentssomepicturesonthescreen.Thestudentshavetogivenamesofdiffer
5、entenergysourcesrelativetothepicturesanddeicidewhichenergysourcesarerenewableandwhicharenot.Thenaskthestudentstotelltheeffectsofusingtheseenergysources.StepⅡPre-reading[来源:学科网ZXXK]Showapictureofgreenhouseonthescreen.T:Nowlookatthepicture.Whatisitinthepicture?S:Agreenhouse.[来源:学。科。网]T:Right
6、.Whocantellmewhatitisusedfor?Sa:Agreenhouseismadeofglassandisusedforgrowingplants,especiallyduringcoldweather.T:Yes,youareright.Andhowdoesitwork?Sb:Theairinsideiswarmbecausetheglasstrapstheheatfromthesunandkeepsitfromescaping.Thismakesthegreenhouseheatupandsotheplantscangrowthroughouttheco
7、ldperiod.T:Exactly.Thankyou.Buttodaywearenotgoingtotalkaboutgreenhouse,we’lltalkaboutgreenhousegases.Haveyouheardaboutthisbefore?Sc:Iknow.Intheatmospheresurroundingtheearththerearegases,whicharecalled“greenhousegases”,includingcarbondioxide,methaneandwatervapo
