23春鲁教初中英语九年级英语下册Unit8We’retryingtosaveheearth》（SectionA1a-2d）教案（新版）

Unit8SectionAla-2dPresentationShowthepictureoftheearthandtellstudentstheearthispollutednow.Forexample:1Thefactoriesthatcoalpollutetheairwithalotofblacksmoke.LearningHerearesomewordsrelatedtodifferentkindsofpollution.WritethemintheboxloudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephonesnoisepollutionairpollutionwaterpollutionKeys:noisepollutionloudmusicplanesmobilephonesbuildinghousesairpollutionfactoriessmokingcarsbuildinghouseswaterpollutionshipsrubbishlitteringfactoriesListeninglbListenandcompletethesentences.WhatwastheproblemTheriverwas.Eventhebottom底部oftheriverwasfullofKeys:reallydirtyrubbishfishlitterwastegovernmentclosedowncleanupListenagainandcheckJthesentencesyouhear.Wecouldgofishingintheriver.Theriverwasreallydirty.Theriverhasalwaysbeenthenicestriverinthistown.Weshouldasktheteachersforhelp.Keys:23IV.PracticeRole-playtheconversationin1c.Mark:Theriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Tony:Butitusedtobesoclean!Mark:Yesbutpeop1earethrowing1itterintotheriver.Tony:Everyoneinthistownshouldplayapartincleaningitup!Makeconversationsusingthepollutioninla.Theriverhasalwaysbeenthenicestriverinthistown.Yesitusedtobesoclean.ButIwastherelastweekendandtheriverwasreallydirty.WhatcausedtheproblemPeoplearethrowinglitterintotheriver.WhatshouldwedoA:Factoriesarealsoputtingwasteintotheriver.B:Yeseveryoneinthistownshouldplayapart.Weshouldwritetothegovernmentandaskthemtoclosedownthefactories.WhatelsecanwedoA:Everyoneshouldhelptocleanuptheriver.LanguagepointsWeretryingtosavetheearth!我们正在竭尽全力拯救地球!trytodo=tryonesbesttodo努力去做某事e.g.Everystudentshouldtrytostudyhardinordertostudyinauniversity.为了进入大学学习，每个学生都应该努力学习Herearesomewordsrelatedtodifferentkindsofpollution.berelatedto与…有关e.g.Iamnotrelatedtohiminanyway.我和他无任何关系Everyoneinthistownshouldplayapartincleaningitup!playapartin在方面起作用e.g.Agooddietplaysalargepartinhelpingpeoplelivelonger.健康的饮食在帮助人们长寿方面起着非常大的作用playapart在……中扮演角色e.g.HewasinvitedtoplayapartinthisTVplay.他被邀请参加这个电视剧的演出Eventhebottomoftheriverwasfullofrubbish.Yesbutpeop1earethrowing1itterintotheriver.litter和rubbish都可指“垃圾”，用作不可数名词rubbish指“没用的东西（被扔或将要丢弃的无用的东西）”不可回收litter指“（室内或公共场所）乱扔的废物（纸屑、不要的包装纸、废瓶等）”还可回收e.g.Throwtherubbishout.把垃圾扔出去Theroomisfullofrubbish.房间里堆满了垃圾Pickupyourlitterafterapicnic.野餐后将废弃物收拾好Listening2aListentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.A.landpollutionB.airpollutionC.noisepollutionD.waterpollutionKeys:BA2bListenagainandcompletethesentences.Theairisbadlypollutedbecausethereareontheroadthesedays.Factoriesthatburncoalalsotheairwithalotofblacksmoke.Thereisalsotoomuchrubbishandwaste.Peoplethingseveryday.Peoplearealsolitteringinlikeparks.Thisisturningbeautifulplacesintougly丑陋ones.Keys:morecarspollutearethrowingawaypublicplacesListenandanswerthequestions.WhoistheinterviewertalkingtoWhataretheytalkingWhatotherproblemsdotheyseeKeys:SusanandJason.Theenvironmentalproblems.Therestoomuchrubbishandwasteinthestreets.Practice2cUsetheinformationin2aand2btorole-playconversationsbetweenJasonandSusan.Jason:Theairhasbecomereallypollutedaroundhere.Imgettingveryworried.Susan:YesIusedtobeabletoseestarsinthesky.Jason:Theproblemisthat….DiscussionAskstudentswhatweshoulddotosavetheearth.Helpstudentsanswerturnoffthelightswhenyouleavearoom;stopridingincars;stopusingpapertowelsornapkins;recyclebooksandpaper.IX.ReadingRead2dandcompletethechart.Role-playtheconversation.Interviewer:JasonandSusanwhatareyourideasforsolvingtheseproblemsJason:Welltocutdownairpollutionweshouldtakethebusorsubwayinsteadofdriving.Susan:Yeahorrideabike.Thereareotheradvantages（优点）ofbikeriding.Itsgoodforhealthanditdoesntcost（花费）anything!Interviewer:Greatideas!WhataboutwastepollutionSusan:MmmIthinksimplethingslikebringingabagtogoshoppingcanhelp.Istarteddoingthatayearago.Jason:Metoo.AlsoInevertakewoodenchopsticksorplastic（塑料）forkswhenIbuytakeaway（外卖食品）food.Iusetheonesathome.Susan:Andremembertothrowrubbishinthebinsandkeeppublicplacesc1eanandbeautifulforeveryone.Interviewer:Sotogetherouractionscanmakeadifferenceandleadtoabetterfuture!X.SummaryandlanguagepointsThisisturningbeautifulplacesintouglyones.turn…into…把变成e.g.Theicyrainseemedliketoturnintosnow.渐渐地冻雨又变成雪花的模样Itsgoodforhealthanditdoesntcostanything!costv.花费；使付出指花费金钱，主语通常是物cost的过去式和过去分词均为coste.g.ThenewshirtcostMrWang200yuan.王先生花了200元买了新衬衫Howmuchdoesthenewcomputercost新电脑花了多少钱？takespendpaycosttakespendpay和cost都可以表示“花费”，但它们的用法各有不同take多表示花费时间，常用于Ittakessb.sometimetodosth.这一句型中，其中it作形式主语e.g.Itusuallytakesme4minutestocookthedinner.spend多表示花费时间和金钱主语通常是人常用于sb.spendssometime/moneyonslh.和sb.spendssometime/moneyindoingsth.两种句型e.g.Davidspent2000yuanonthenewmachine.MyfatherspendsanhourinwatchingthenewsonTVeveryday.pay多表示花费金钱，主语通常是人，常用于sb.payssomemoneyforsth.句型e.g.Tommypaid20yuanforhisbreakfastyesterday.cost多表示花费金钱，主语通常是物，常用于sth.costssb.somemoney.句型e.g.ThenewdresscostLinda88yuan.根据句意用takespendpay或cost的适当形式填空Thatnewcarthemlotsofmoney.Mona50yuanonthebooksjustnow.Itusuallymeanhourtodomyhomework.Youshouldsometimepractisingyourpronunciation.Mybrother6000yuanforthenewcomputeryesterday.Keyscostspenttakesspendpaid

3.Sotogetherouractionscanmakeadifferenceandleadtoabetterfuture!makeadifferenceto---表示对产生影响或作用e.g.Doyouthinkhiswordswouldmakeanydifferencetothefinaldecision你认为他的话会对最后的决定产生影响吗？ThenewteacheralwaysencourageslittleTom.Thishasmadeabigdifferencetohim.新来的老师总是鼓励小汤姆，这对他影响很大Exercises用动词的适当形式填空We*retryingsavetheearth.Thereusedtobecleanandbeautiful.Therearetoomanyfortocatchfish.Itsbadforenvironmenttousewoodchopsticks.Keys:tosavebefishfishermenwoodenThinkaboutTheearthisbad1ypolluted.Pleasemakeaposterandthinkofwhatwecando.HomeworkCopythenewwordsandrememberthem.Readthelisteningmaterialsoflb2a.werenomoreforfishermen渔民tocatch.WhatcausedtheproblemPeoplearethrowingintotheriver.Factoriesareputtingintotheriver.HowshouldtheproblembesolvedWeshouldwritetotheandaskthemtothefactories.Everyoneshouldhelptotheriver.ProblemsSolvingproblemsairpollutionwastepollutionwooden（木头的）chopsticksorplasticforksrubbish。