Unit4GlobalwarmingTeachingaims:1.TopicGlobalwarming;Pollution;Theimportanceofprotectingtheearth2.Usefulwordsandexpressions:Words:compare,graph,phenomenon,fuel,quantity,per,data,catastrophe,climate,consequence,state,range,glance,widespread,decrease,steady,steadily,average,existence,outer,electrical,motor,can(n.),microwave,nuclear,disagreement,titleExpressions:compareto,comeabout,quantitiesof,resultin,buildup,keepon,onthewhole,makeadifference,putupwith,solongas,andsoon3.Functionalitems:Expressingagreement,disagreement,blameandcomplaintYes,Iagreewithyou.Yes,Ithinkso.Ibelievethatyou’vegotitright.Idon’tthinkso.Idon’tthinkthat’sright.I’mafraidyouarewrong.I’msorrytobringthisup,but….I’msorrytosaythis,but….Theyshouldn’thavedoneit.Theyaretoblame.Whydon’tyoudosomethingaboutit?Perhapstheyshould/oughttodo….4.GrammarTheuseof“It”:itusedforemphasisItishumanactivitythathascausedthisglobalwarming.TeachingproceduresPeriod1SpeakingandlisteningStep1.WarmingupTask1.Ssingroups,discussthefollowingquestions:1.Whatdoweuseenergyfor?2.Wheredoesalltheenergycomefrom?3.Whichenergysourcesarerenewableandwhicharenon-renewable?Sampleanswers:RenewableNon-renewable用心爱心专心WindpowerCoalSolarpowerNaturalgasandoilHydroelectricpowerNuclearpowerStep2.ListeningTask2:SsreadthestatementsinEx1onpage31andlistentothetapetofindoutthelisteningpoints.1.Ssreadthestatement.2.Playthetapeforthefirsttime.HelptheSsgetageneralunderstandingaboutthedialogue.3.SsfindoutthelisteningpointsandfinishEx1.Task3:Secondlistening:SslistentothetapeagainandtickthephrasesthatProfessorChenusestoagreeordisagreewithLiBinonpage31.Step3.DiscussingTask4.SsreadwhatProfessorChenandLiBinsayonpage31.Then,ingroups,discusswhoyouagreewithandgivereasons.Trytousethefollowingexpressions:ExactlyThat’strue.That’sright.Iagree.I’mafraidIdisagreewithyou.I’mafraidnot.Idon’tthinkso.Noway.Idon’tagree.…Period2.ReadingStep1.RevisionShowtheSssomepicturesonthescreen.TheSshavetogivenamesofdifferentenergysourcesrelativetothepicturesanddecidewhichenergysourcesarerenewableandwhicharenot.ThenasktheSstotelltheeffectsofusingtheseenergysources.用心爱心专心Step2.Pre-readingTask1.Ssinpairs,talkaboutthegreenhouseandanswerthefollowingquestions:1.Whatisagreenhouse?Howdoesitwork?2.Whatdoyouthinkgreenhousegasesdo?Step3.ReadingTask2.Predicting:Ssreadthetitleandpredictwhatthetextwilltell.Task3.SsreadthepassageforthefirsttimeandtrytofinishEx2onpage27.Suggestedanswers:True:3,5,6,7,8False:1,2,4,9,10Task4.Ssreadthepassageagainandtrytodividethewholepassageintoseveralpartsandsummarizethemainideaforeachpart.Whilereading,payattentiontothewritingskills.MainideasofeachpartWritingskillsIntroduceadebateovertheissueofglobalwarming.(paragraph1)RaisingaquestionIllustratehowglobalwarmingcomesabout.(paragraphs2-4)Givingexamples,usinggraphs,explanation.Listtwodifferentattitudesamongscientiststowardsglobalwarming.(paragraphs5-10)Givingexamples,makingcontrast.It’suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot.(paragraph11)Usingaquestion,leavingreaderstothinkovertheissue.Task5.SsreadagainandtrytogettheanswerstothequestionsofEx1onpage27.Step4.After–reading用心爱心专心Task6.Debate:gettheSstodebateoverthestatement:Weshoulddonothingaboutglobalwarming.1.Getintogroupsofsix.Decidewhichthreeinyourgrouparegoingtoagreewiththestatement(GroupA)andwhichthreea...
