Unit2SavingtheEarthTopic1Pollutionisharmfultopeople’shealth.SectionDThemainactivitiesare1a和3.本课重点活动是1a和3。Ⅰ.Teachingaimsanddemands教学目标1.Learnsomenewwords:create,industry,blood2.Reviewdirectspeechandindirectspeech:(1)Mrs.Zhousaidthatshewasfeelingevenworse.(2)ThejournalistaskedMrs.Zhouif/whethershewasfeelingbetterthen.(3)Thejournalistaskedwhattheenvironmentaroundthatplacewaslike.3.Reviewsomekindsofpollutionandtheproblemscausedbythem.Ⅱ.Teachingaids教具图片/录音机/小黑板Ⅲ.Five-fingerTeachingPlan五指教学方案Step1Review第一步复习(时间:2分钟)复习噪音污染，巩固SectionC。T:Isnoiseakindofpollution?Ss:Yes.T:Whatcancausenoisepollution?S1:Themachinesinsomefactories.S2:Planes.S3:Loudpopmusic.S4:Cars.S5:Thetraffic.S6:…T:Pleaselistsomeotherkindsofpollutionaroundus.Ss:Airpollution,lightpollution…T:OK,thislesson,let’stalkabouttheharmthatthepollutioncauses.Step2Presentation第二步呈现(时间:15分钟)利用图片，设置对话，重现不同种类的污染，导入生词，呈现1a。1.T:Manythingsmakingloudnoisecancausenoisepollution.Whatproblemsdoesnoisepollutioncause?S1:Noisepollutioncancausehearingloss.S2:Itmakespeoplesickorbecomedeaf.S3:Italsomakespeopleuncomfortableandunpleasant.T:Yes,toomuchnoisecancausehighbloodpressureaswell.(教师板书新词并释义，且要求掌握blood；理解pressure。)blood,pressure2.T:Noisepollutionisharmfultopeople.Butit’snottheonlykindofpollutioninourworld.Doyouknowanyotherkindsofpollution?Let’slookatthispicture.(教师展示图片一。)T:Whatkindofpollutionisit?Ss:Soilpollution.T:That’sright.Whatcausessoilpollution?S4:Peopleusetoomanychemicalsintheirfields.T:Sotheydestroythesoil.(教师板书，释义并要求学生理解。)destroy(教师展示图片二。)T:Lookatthispicture.Whatkindofpollutionisit?Ss:Litter.T:Yes.There’sapileofrubbishhere.Itmakesourenvironmentdirty.(教师展示图片三。)T:(指着图片中的浓烟。)Whatkindofpollutionisit?Ss:Airpollution.T:Yes.Whatcreatesairpollution?(板书并讲解，且要求学生掌握。)createSs:Burningcoal.T:Withthedevelopmentofindustry,airpollutionisbecomingmoreandmoreserious.(板书并讲解，且要求学生掌握。)industry(教师展示图片四。)T:Lookatthepicture.Whatkindofpollutionisit?Ss:Lightpollution.T:Yes.Lookatthestrongandchangeablelight.It’sbadforeyes.3.T:Fromthepictures,weknowpollutionisbadforourhealthinmanyways.Ifthereisnopollutionontheearth,whatwilltheearthbelike?(板书并讲解。)inmanywaysSs:Maybeourearthwillbegreenerandmorebeautiful.T:Yes.Weshouldprotectourplanetfromnowon.OK,let’sread1aandfillintheblankswiththeproperformsofthewordsandphrasesabove.(学生用所给的单词和短语的正确形式填空，师生核对答案。)4.(学生再次阅读1a，找出重点和疑难点，教师讲解。)Step3Consolidation第三步巩固(时间:8分钟)完成1b，拓展1a，利用小组讨论的形式，引导学生认识不同污染的危害并提出处理建议。1.(听录音，跟读1a。)T:Listentothetapeof1a,andreadafterit.(让学生再读1a，完成1b。)T:Read1aagain,thenfilloutthetablein1b.(核对答案。)2.(学生分组讨论。)T:There’resomanykindsofpollutionaroundus.Howdotheyeffectonourenvironmentorhealth?Andhowcanwedealwiththem?Discussingroupsoffour.S1:Airpollutioncausessoreeyesandbreathingproblems.Wehadbetterpulldownthepollutingfactories.S2:Littermakesourenvironmentdirty.Weshouldthrowtherubbishintothedustbin.S3:Noisepollutioncanmakepeopledeaf.Weshouldmakesomerulestostopit.S4:…(教师总结。)T:Let’stryourbesttobegreenerpeople,OK?Ss:OK!Step4Practice第四步练习(时间:15分钟)采用对话及练习的方法，巩固2a与2b...
