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1、Unit2SavingtheEarthTopic3SectionA教案Teachingaimsanddemands1.Learnsomenewwords:encourage,suppose,nod,agreement,shake2.Learnthecompoundsentence.3.Learntotalkabouttheprotectionofenvironment.Teachingaids录音机/多媒体图片/小黑板TeachingPlanStep1Review师生互动，复习上个话题的内容，练习学生的听、说能力。T:Wetalkedaboutthe
2、harmofpollutioninthelasttopic.Andweknowtherearemanykindsofpollution,suchaswaterpollution,airpollution,lightpollution,litterandsoon.Howdothesekindsofpollutionaffectourenvironment?(教师以竞答的方式喊学生个别回答。)Example:S1:Waterpollutionmakessomeanimalsdead.S2:Waterpollutionmakessomeplantsdead
3、.S3:Peopleandanimalscan’tdrinkthewater.S4:Airpollutioncausesthegreenhouseeffect.S5:Airpollutionmakespeoplesickandevencausescancer.S6:Airpollutiondestroystheozonelayer.T:Yes,youareright.Youknow,allkindsofpollutionarepollutingourenvironment.Sowearefacingtheseriouspollutionproblem
4、s.Whatshouldwedotoimproveourenvironment?(学生分组讨论，然后回答。)Group1:Don’tspiteverywhere.Don’tpicktheflowers.Plantmoretrees.Group2:Askthegovernmenttomakerulesandpulldownsomechemicalfactories.Askpeopletouseelectricity.T:Verygood!Youhavesomanygoodideastoimproveourenvironment.Wouldyoulike
5、todosomethingusefultoimproveourenvironment?Ss:Yes,ofcourse.T:Me,too!OK,let’sbegreenerpeopletogether.Today,we’lllearnTopic3.Step2Presentation1.教师用图片引出本课的词汇和内容。T:Ifwewanttobegreenerpeople,whatshouldwedoathome?(教师展示图片。)T:Let’slookatthepicture.Whatarethey?Ss:Theyareplasticbags.T:Ye
6、s.Butweshoulduseplasticbagsasfewaspossible.Inanotherway,weshouldreducethem.T:Whatkindsofbagsshouldweuse?(教师展示图片。)T:Wecanusebagslikethese.Wecanusethemagainandagain.Thatistosay,wecanreusetheminsteadofthrowingthemaway.(教师展示图片。)T:Whataretheyinthepicture?Ss:(回答不出。)T:Theyarecans.They
7、aresoftdrinkcans.Shouldwethrowthemawayafterwedrink?Ss:No.T:You’reright.Weshouldcollectthemforrecycling.(教师让学生看图片，总结。)T:Now,weknow,weshouldreduce,reuseandrecyclesomethingsathometoprotectourenvironment.WecallthethreeRs—reduce,reuseandrecycle.T:Everyoneshouldprotectourenvironment.
8、It’sourdutytodoit.Thatistosay,everyoneissupposedtodoit
