Unit2SavingtheEarthTopic1Pollutionisharmfultopeople’shealth.SectionAThemainactivitiesare1a,1band3a.本课重点活动是1a、1b和3a。Ⅰ.Teachingaimsanddemands教学目标1.Learnsomenewwordsandphrases:bee,mygoodness,waste,stream,breathe,beharmfulto,influence2.Learnsomeusefulsentences:(1)Oh,mygoodness!(2)Look,thereareseveralchemicalfactoriespouringwastewaterintothestream.3.Learndirectspeechandindirectspeech:(1)Kangkangsaidthatitwasabeautifulplacewithflowersandgrass.(2)Kangkangsaidthattheflowersandgrasshadgone.4.Learnandtalkaboutdifferentkindsofpollution:(1)Airpollutionmakespeoplesick.(2)Lightpollutionisharmfultooureyes.(3)Litterinfluencesourenvironment.Ⅱ.Teachingaids教具幻灯片/小黑板/录音机/图片Ⅲ.Five-fingerTeachingPlan五指教学方案Step1Review第一步复习(时间:3分钟)回顾第一单元有关家乡变化的内容，运用现在完成时态，导入新课。(通过对第一单元的复习，导入被污染的西山景象。)T:Lastunit,wehavelearnedsomechangesinourhometown.Canyousaysome?S1:Theroadsarewider.S2:Thebuildingsarehigherandhigher.S3:Thelivingconditionshaveimproved…S4:…T:Yes.Manychangeshavehappenedinourhometown.Let’slookatthetwopicturesabouttheWestHillanddiscussthechangesbetweenthem.Step2Presentation第二步呈现(时间:15分钟)通过比较1a的两幅图画的差异，展开对话，学习部分生词，呈现1a。1.(利用幻灯片展示1a中的两幅图，师生问答。)T:Arethereanydifferencesbetweenthem?Ss:Yes.T:Let’slookatPicture1.Whatcanyousee?S1:Icanseesomeflowersandgrass.S2:Icanseesomebutterfliesdancing.T:Yes,therearesomebutterfliesdancing.(板书并要求学生掌握。)thereis/are…doingsth.T:Whatelsecanyousee?S3:Icanseearabbit.S4:Icanseesomehouses.S5:…T:(指着蜜蜂。)What’sit?Ss:蜜蜂。T:It’sabee.Thereisabeeflying.(板书并要求学生掌握。)beeT:(指着小溪。)What’sit?Ss:小溪。T:It’sastream.Andtherearesomefishesswimminginthestream.(板书并要求学生掌握。)streamT:WeknowtheWestHillwasabeautifulplace.LookatPicture2.Oh,mygoodness!WhathashappenedtotheWestHill?(板书并要求学生掌握。)mygoodnessS6:Therabbithasdisappeared.S7:Thefishhavedied.S8:Thetreeshavedied.S9:Therearenoflowers,butterflies,grass,andsoon.S10:Therearesomefactories.T:(指着工厂。)Yes,thereareseveralfactories.Theyarechemicalfactories.(板书并要求学生理解。)chemicalT:(指着工厂冒的黑烟，并捂住鼻子做呼吸困难状。)Theyaremakingmuchsmoke.Itcancausebreathingproblems.(板书并要求学生掌握。)breatheT:(指着排放的废物。)Andtheyarepouringwastewaterintothestream.(板书并要求学生掌握。)wasteT:FromPicture2,weknowthechemicalfactoriesareharmfultotheanimalsandplants.(板书并要求学生掌握。)harmfulbeharmfulto2.(要求学生不看书，只听录音，捕捉要点，回答问题，提高听力水平。)T:Closeyourbooks.Listentothetapecarefully,thenanswerthesequestions.(出示小黑板上的问题，听录音1a。)(1)Wherearetheygoingtohavethepicnic?(2)WhydoesKangkangsay“Oh,mygoodness!”?3.(核对答案，板书1a的关键词。)beautiful—fresh—clean—gone—dirty—terrible—wastewaterStep3Consolidation第三步巩固(时间:12分钟)复述1a，引入本课重点，讲解和操练“直接引语”与“间接引语”，完成1b。1.(要求学生在限定时间内，根据黑板上的关键词复述对话。)T:Trytousethekeywordsontheblackboardtoretell1a.Example:Inthepast,theWestHillwasabeautifulplacewithflowersandgrass.Wecouldseebeesandbutterfliesdancing.Theairwasfresh,thewaterwasverycleanandwecouldseefishswimming.Butnow,alltheflowers,grass,bees,butterfliesandfishhavegone.Thewaterissodirtyanditsmellsterrible.Why?Becausethereareseveralchemicalfactoriespouringwastewaterin...
