仁爱版英语九年级上册Unit2Topic2SectionC教学设计

整理文本整理文本Unit2Topic2SectionC教学设计I.Materialanalysis本课是第二单元第二话题的第三课时，主活动是 1a和3。通过阅读1a,进一步学习各种污染对地球造成的危害和造成这些污染的原因，培养学生通过图片预测文章大意的能力，其中出现了很多关于环境的专业术语，需要学生了解。1b是训练学生运用不同的阅读策略完成不同的任务，如：通过观察 1a中的图片匹配相应的标题，再阅读文章，给每段话选择标题；另外，继续训练学生通过语境，找出单词指代的内容；最后在理解课文的前提下，归纳文章的大意。1c培养学生通过精读文章，学会用简单的词句做笔记，再通过1c表格中的内容简要复述文章大意。2是培养学生的资源策略。要求学生合理地运用网络资源查找与环境危害相关的信息，然后进行小组讨论，并要求学生做好笔记，为任务3做准备。3要求学生运用这些信息，在1c和2的基础之上进行写作练习，教师应强调衔接词在作文中的重要性。由于课堂上不方便完成 2，因此，可将 2和3安排为课后作业。通过读写的结合训练，引导学生关注全球环境的现状，意识到环境保护的重要性，树立正确的环保观念。n.Teachingaims.Knowledgeaim：s掌握本课的重点词汇和短语，初步感知定语从句。进一步学习各种污染对地球造成的危害和造成这些污染的原因。.Skillaims:能读懂有关环境问题的文章。能根据不同的阅读目的，运用简单的阅读策略获取信息。能正确运用网络资源获取需要的信息。能用英语书面的形式表达环境问题的成因及危害。.Emotionalaims:(optional)通过学习，了解环境现状，帮助学生树立绿色环保意识。.Cultureawareness:(optional)了解各种环境问题，如臭氧空洞，温室效应等，意识到环境问题的严峻形势。m.ThekeypointsanddifficultpointsKeypoints:Wordsandphrases:hole,form,rise,oxygen,ozonelayer,radiation,directly,carbondioxide,blanket,escape,thegreenhouseeffect,referduringthisperiod,takeaway,passthroughSentences:(1)Forestshavebecomedeserts,somoreandmoresortsofanimalsandplantsaredisappearing.Asaresult,manyriversandlakesarenowdead.Toomuchharmfulradiationfromthesunpassesthroughtheholeandreachestheearthdirectly.Itcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange.Whenitrainsorwhenthewindblows,theearthistakenaway.(6)Theheatfromthesuncan,so’thteet(6)Theheatfromthesuncan,so’thteettsecmaperatureisrising.Grammar:indefinitepronounandadverbDifficultpoints：理解有关环境方面的专业术语。能读懂与环境问题相关的科普类文章。能运用所学知识，写出谈论环境现状的文章。.Learningstrategies能在阅读不同体裁的材料时，运用不同的阅读策略获取信息。善于利用插图预测科普类文章的内容。能合理运用网络资源，拓展写作思路和开拓视野。恰当使用连接词，使自己的作文流畅，有逻辑层次。.Teachingaids与环境相关的图片；单词卡片(如。2/oxygen;ozonelayer;radiation^)；录音机；国际臭氧层保护日宣传动画片等。VI.TeachingproceduresStage(timeperiod)InteractionpatternsTeacheractivityStudentactivityRemarks

1Gettingstudentsreadyforlearningandrevision( 2mins)ClassactivityChecktheSs'homework:LettheSsgiveareportabouttheirownbadhabitsandhowtcmakethecampusbetter.T:Hi,everyone.Lastclass,wehavetalkedsomethingaboutthschoolenvironment.Someofusmayhavesomebadhabits,andthesehabitscanaffectourcampus.Whatcanyoudotomakeourcampuslookbetter?Pleaseshareyouropinionswithus.S1:IoftenforgettoturnoffthelightswhenIleavetheclassroom.Ithinkitdoesn'matterifthelightsareonforalittlewhile.AndIoftenwastesomepaperafterIonlyuseasmallpartofit.Iliketousenewpaper.ButnowIrealizetheseGiveareportaboutyourownbadhabitsandhowtomakethecampuslookbetter.eS1:IoftenforgettoturnoffthelightswhenIleavetheclassroom.Ithinkitdoesn 'tifthelightsareonforalittlewhile.AndIoftenwastesomepaperaftertuseonlyasmallpartofit.Iliketousenewpaper.Ihopeeveryoneofuscansaveenergyfromnowon.用报告的形式让学生在课堂上反思自己平时的言行，有助于学生更好提开自己，培养“爱护环境从我做起，从小事做起”的意识。matter

habitsarereallybadones,soIhopeeveryoneofuscansaveenergyfromnowon.T:Verygood.Ifyoucangivemoresuggestions,itwillbebetter.Nextone.S2:Ialwaysmakeloudnoisebetweenclasses.Itdisturbsothers.Ioftenthrowrubbisharoundinacornerifthereisnobody.Butfromnowon,Iwillremembertogetridofthebadhabits.Ifeveryonecanfollowtheschoolrules,ourcampuswillbecomemorebeautiful.S3:…T:Great.S2:Ialwaysmakeloudnoisebetweenclasses.Idisturbsothers.Ioftenthrowrubbisharoundinacornerifthereisnobody.Butfromnowon,Iwillremembertogetridofthebadhabits.Ifeveryonecanfollowtheschoolrules,ourcampuswillbecomemorebeautiful.S3:…t2Lead-in(3mins)ClassactivityPlaythecartoonvideoaboutprotectingtheozonelayer.LettheSswatchanddiscusswhatWatchthevideoanddiscusswhattheyhavelearntfromit.Take通过播放视频，让学生了解每年的9

theyhavelearntfromit.Takesomenotes.月16日是国somenotesifnecessary.际臭氧层保T:Hereisavideoabout护日，关注臭protectingtheozonelayer.氧层的现状。Let'swatchitcarefully.ThenI该宣传片是willaskyousomethingaboutit.卡通版，不是...枯燥的科教T:NowLet'sfigureoutSs:It'sveryimportant,能够很好somethingaboutozonelayer.Is地吸引学生ozonelayerimportantorSs:Yes.的注意力。如unimportant?Ss:Thereisabigholein果条件不允Ss:It'sveryimportanttheozonelayer.许，教师可以T:CantheozonelayerprotectSs:It'harmfultoall从课外书籍us?thelivingthings,上选读一些Ss:Yes.especiallytohumansfor与环境相关T:Whathappenedtoitnow?itdoesharmtooureyes的文早。Ss:Thereisabigholeintheandskin.ozonelayer.…T:Yes.What'stheeffectofit?Ss:It'sharmfultthallivingthings,especiallytohumansfor

itdoesharmtooureyesandskin.3Pre-reading(5mins)ClassactivityClassactivityStep1:Showtwopicturesofozonelayerandmorecarbondioxide.IntroducethemtotheSsbrieflytoteachthenewwords.T:Right.Ozoneisaspecialkinofoxygen.Itcanprotecttheearth.Nowpeopleproducelotsofharmfulchemicalsintotheair.Theycauseabigholeintheozonelayer.Sotheradiationcapassthroughtheholeandreacltheearthdirectly.…(ShowthepictureofmorecarbondioxideandleadtheSstolearnthenewwordsinthesameway.)Step2:GuidetheSstopredictLookatthepicturesandlearnthenewwordsaccordingtoteacher'descriptions.niPredictthemainideaofthepassagebythegiverpictures.Somethingaboutpollution.Trafficpollution在观看宣传片后，再介绍s关臭氧层和温室效应的英义词汇，学生容易理解，也容易掌握。1培养学生通过观察图片，预测课文内容的能力，这

themainideaofthepassagebythegivenpictures.T:NowlookatthepicturesonPage39,canyouguesswhatwwilllearninthepassage.Somethingaboutpollution.Trafficpollution/airpollutionOzonelayerCuttingdowntreesCarbondioxide…OzonelayerCuttingdowntreesCarbondioxidee…有助于学生在日常阅读中，快速获取信息。4While-reading(20mins)IndividualworkStep1:LettheSsmatchthepictureswiththetitlesin1of1b,andthenreadparagraphs2-6quicklyandwritedownthepropertitleinfrontofeachparagraph.T:Excellent.Nowread1aquickly,matchthepictureswiththetitlesinExercise1quickly.Matchthepictureswiththetitlesin1of1b,andthenreadparagraphs2-quicklyandwritedownthetitleinfrontofeachparagraph.教师在安排1b的阅读任6务时，要注意以卜两点：1.引导学生用不同的阅读策略完成不同的阅读任务。

IndividualworkPicture1istrafficpollution.Picture2istheozonelayer,S3:Picture3isfewertrees.Picture4ismorecarbondioxide.Picture5isfactorypollution…T:Right.Nowpleasereadparagraphs2-6quickly,choosetitleforeachparaandwritedowninfrontofit.…T:OK,let 'schecktheartogether.Para2isfewertrees.Para3istrafficpollution.Para4isfactorypollution.Para5istheozonelayer.S10:Para6ismorecarbondioxide.Picture1istrafficpollution..Picture2istheozonelayer.Picture3isfewertrees..S4:Picture4ismorecarbondioxide.Picture5isfactorya…pollution.…iswerPara2isfewertreesPara3istrafficpollution.Para4isfactorypollution.Para5istheozone2.任务的安排要有层次性，从易到难。.训练学生通过上下文猜测单词指代

GroupworkStep2:LeadtheSstoreadparagraph1,5and6,findthewordsinExercise2,3and4anguessthemeaningsofthemaccordingtothecontent.T:Great.Nowreadparagraph15and6,findthewordsinExercise2,3and4andguessthemeaningsofthemaccordingtothecontent.…T:Whatdoes“ourplanetmeaninthispara?Itmeans “theearthT:Whatdoestheword“blanket"referto?Carbondioxidearoundtheearth.T:Whatdoestheword“it”inPara5referto?Itreferso .layer.S10:Para6ismoredcarbondioxide.Readparagraph1,5and6,findthewordsin,Exercise2,3and4andguessthemeaningsofthemaccordingtothecontent.Itmeans“theearth:Carbondioxidearoundtheearth.的内容，有助于学生更好的理解课文。1该环节的三个小任务是用相同的方法获得信息，因此，可以一次性完成。归纳文章中心思想，是学生较为头疼

…Step3:LettheSsread1acarefully,choosethebesttitleforthepassageandfinish5in1b.Thencompletethenotesin1caccordingto1a.T:Pleasereadthepassageandchoosethebesttitleforthepassage.…T:OK.Haveyougotthemainideaofthepassage?S4: Yes.Environmentalproblems.T:Right.Trytofinishthenotesin1caccordingtothepassagePayattentiontousethekeywordswhentakingnotes.Youcandiscusswithyourgroupmembers.…Itrefersto 3”.…Read1acarefully,choosethebesttitleforthepassageandfinish5in1b.Thencompletethenotesin1caccordingto1a.Yes.Environmentalproblems.Peoplehavehealthproblem.的题目，因此,如果文章较长的话，最好把它放到最后一个环节处理，降低J难度，教师要引导学生用排除法作出正确的选择。

T:OK.Haveyoufinished?What'stheeffectoftrafficS6:Factoriesmakethepollution?PeoplehavehealthproblemT:What'stheeffectoffactopollution?Factoriesmaketheriveranlakesdead.S7:……T:That'sight.Youdidverywell.riverandlakesdead.…i.)rydIndividualStep1:LettheSsread1aRead1acarefully,find本环节具体work,carefully,findoutthedifficultoutthedifficultpoints,操作说明：Post-readGroupworkpoints,andlistthemontheBb.andlisttheminthesmal1.学生在组ingandclassT:Read1aagainandfindoutBb.内归纳好本5(12mins)activitythedifficultpoints.PleasecollectthemingroupsandlistthemonyoursmallBb.…T:OK,nowlookatthepoints组存在的问题。2.教师任意选择一组作为主讲，在讲

PairworkofGroupOneontheBb.Lookatthisone“Whatdoestheword“others"referto?”Whocandealwithit?Somethingwehavedone.T:OK,lookatthissentence“theearthistakenawa9.Whocantranslateit?Itmeans泥土被带走了"inChinese.…Step2:GuidetheSstoretellthpassageaccordingtothefirstpara,lastparaandthenotesin1c.T:Nowworkinpairs.Trytoretellthepassageaccordingtothefirstpara,lastparaandtheSomethingwehavedone.Itmeans“泥土被，巾走了 inChinese.(TheSsneedtotakenoteswhiletheteacheris giving someexplanations.)Workinpairs,trytoretellthepassageaccordingtothefirstepara,lastparaandthenotesin1c.S1:Sincehumanslivedontheearth,wechange解过程中，仍然遵循先让学生解答、教师补充的原贝黑3.再补充讲解其他组剩下的问题，相同的问题不作重复讲解。4.最后老师将重点板书到黑板上。d

notesin1c.…T:Nowwhocanhaveatry?S1:Sincehumanslivedontheearth,wechangedtheearthalot.Somethingisgoodwhilesomethingisbad.Therearefewertreesintheworld.Peoplecutdownthem,soforestsbecomedesertsandanimalsarplantsaredisappearingS2……theearthalot.Somethingisgoodwhilesomethingisbad.Therearefewertreesintheworld.Peoplecutthemdown,soforestsbecomedesertsandanimalsandplants aredisappearing…dS2…6Summarizingandassigninghomework(3mins)ClassactivityStep1:LettheSssummarizewhattheyhavelearnedinclassT:Now,let'gooverwhatyouhavelearnedtoday,includingwords,phrasesandsentences.Andeachstudenthatopresentone.Goovertogetherandspeakoutwhattheyhavelearnedtoday.…isS1:oxygen由于网络资源的覆盖面有限，在课堂上运用互联网查找信息解决问题，很难实现，因

oxygenradiationcarbondioxide…Step2:HMK:LettheSssearchtheInternetformoreinformation aboutenvironmentalproblemsandeffects.Discusstheinformationingroupsandtakenotes.Thenwriteapassageaccordingtotheirnotesand1c.T:OK,afterclass,searchtheInternetformoreinformationaboutenvironmentalproblemsandeffects.Disc