Unit2SavingtheEarthTopic2Alltheseproblemsareveryserious.SectionAThemainactivitiesare1aand2.本课重点活动是1a和2。Ⅰ.Teachingaimsanddemands教学目标1.Learnanewwordandsomephrases:asaresult,behavior,inthebeginning,daybyday,dieout2.Learnsomeusefulsentences:(1)Asaresult,airpollutionhasbecomeaseriousproblem.(2)Humanshavecometorealizetheimportanceofprotectinganimals.`·1·3.Learntheindefinitepronounandadverb:(1)Noneofuslikespollution.(2)Don’tspitanywhereinpublic.(3)Everyoneshouldcareforwildanimalsandplantmoretrees.4.Learntheimportanceofprotectingtheenvironment.Ⅱ.Teachingaids教具有关污染的和学生不文明行为的教学图片/小黑板/录音机/警示标语Ⅲ.Five-fingerTeachingPlan五指教学方案Step1Review第一步复习(时间:7分钟)复习污染的类型及其危害，教师创设一个空气污染的情境，引入本课话题。1.(教师收集一些有关污染的图片，让学生说出它们分别属于哪种污染，有何危害并提出解决建议。)T:Whatkindofpollutionisit?Ss:Itisnoisepollution.T:Whatharmcanitcause?S1:Itcandisturbothersandmakepeoplefeeluncomfortableandunpleasant.S2:Itdoesgreatharmtopeople’shearing.Itcanevenmakepeoplesickordeaf.T:Good.Howshouldwesolvethisproblem?S3:Don’talwayslistentoloudpopmusic.S4:Don’tmakealoudnoiceinpublic.…(其它污染用同样的方法复习。学生可以在教师帮助下回答。)Step2Presentation第二步呈现(时间:10分钟)展示1a的图片，导入新课，呈现本课生词和词组。讲解不定代词和不定副词的用法。教育学生必须保护环境。(教师创设一个空气污染的情境，引入本课话题。例如：教师一边拍身上的灰尘，一边咳嗽着走进教室，然后描述。)`·2·T:Itistoodirtyandthereistoomuchheavysmokeoutside.Ican’tstandit.1.(教师展示1a的图片，导入新课。)T:Doyouliketheenvironmenthere?Ss:No,wedon’t.T:Why?Ss:Becausethereistoomuchsmoke.It’saseriousairpollution.T:Verygood.Weshouldstopburningcoal.ItissaidthatChinahasbecometheworld’slargestproduceranduserofcoal.Asaresult,airpollutionhasbecomeaseriousproblem.(板书并要求学生掌握。)asaresultT:Nowourgovernmenthasrealizedtheimportanceofprotectingtheenvironment.(板书并要求学生理解。)importanceT:Weshoulddosomethingusefultoprotecttheenvironment,too.(板书并解释something是不定代词，其修饰语要放在它后面。);somethingusefulT:Canyoutellmewhatweshoulddo?S1:Weshouldn’tleaverubbishhereandthere.S2:Don’tspitanywhereinpublic.S3:Don’twalkongrass.S4:…(教师引导学生回答。)T:Welldone.Weshoulddoeverythingwecantoprotecttheenvironment.2.(播放1a录音，让学生带着问题去听。)T:Listentothetape,andanswerthequestionsonthesmallblackboard.(出示小黑板。)(1)What’sthearticleabout?(2)Whatshouldwedoandnotdotoprotecttheenvironment?(核对答案。)3.(男女生分角色朗读。)T:Let’sread1atogether.Boys—Kangkangandgirls—Michael.4.(让学生再读1a，试着找出1a中的不定代词或不定副词，以及一些疑难点。)T:Read1aagain,andtrytofindtheindefinitepronounsoradverbs.Step3Consolidation第三步巩固(时间:8分钟)阅读1a，完成1b，开展分组活动加深对文章的理解，增强学生的环保意识。`·3·1.(让学生齐读对话，巩固1a并完成1b。)T:Now,let’sreadthisdialogtogetheragain,andthentrytoanswerthequestionsin1basquicklyasyoucan.(核对答案。)2.(要求学生利用小黑板上的关键词复述1a。)T:Retell1awiththekeywords.Twominutesforpreparation.a.thelargestproduceranduserb.aseriousproblemc.dosomethingusefuld.leaverubbish/spitanywhere/walkongrass/pickflowers/carefor/plantmoretreese.doeverything(抽查几名同学，检测复述情况。教师作点评。)Step4Practice第四步练习(时间:15分钟)教师利用图片作引导，呈现部分生词和词组。让学生独立完成2，然后听录音，完成3。并...
