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1、wordsandexpressionsThe earth is polluted.air pollutionThefactoriesthatburncoalpollutetheairwithalotofblacksmoke.n.煤炭煤炭Factoriesputwasteintotheriver.water pollutionmobile phone pollutionlitterv.乱扔乱扔n.垃圾垃圾rubbishwaste垃圾，废弃物垃圾，废弃物Peopleshouldthrowawaylitterinthebin.n.垃圾箱垃圾箱noise pollutionTherearemoreca
2、rsontheroad.litterbottomfishermancoaluglyadvantagecostwoodenplastictakeawaybinv.乱扔乱扔n.垃圾；废弃物垃圾；废弃物n.底部；最下部底部；最下部n.渔民；钓鱼的人渔民；钓鱼的人n.煤；煤块煤；煤块adj.丑陋的；难看的丑陋的；难看的n.优点；有利条件优点；有利条件v.花费花费adj.木制的；木头的木制的；木头的n.塑料；塑胶塑料；塑胶n.外卖食物外卖食物n.垃圾桶垃圾桶WordsReview1aHere are some words related to different kinds of pollution.W
3、rite them in the box below.Then add more words.noisepollution_airpollution_waterpollution_loudmusicplanesmobilephonesfactoriescarssmokingshipsfactorieslitteringrubbishbuildinghousesbuildinghousesloudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephones1bListen and complete t
4、he sentences.What was the problem?Theriverwas_.Eventhebottom(底部底部)oftheriverwasfullof_.Therewerenomore_forfishermen(渔民渔民)tocatch.reallydirtyrubbishfishWhat caused the problem?Peoplearethrowing_intotheriver.Factoriesareputting_intotheriver.How should the problem be solved?Weshouldwritetothe_andaskthe
5、mto_thefactories.Everyoneshouldhelpto_theriver.litterwastegovernmentclosedowncleanupListen again and check()the sentences you hear.1.Wecouldgofishingintheriver.2.Theriverwasreallydirty.3.Theriverhasalwaysbeenthenicestriverinthistown.4.Weshouldasktheteachersforhelp.1cTheriverwasdirty.Eventhebottomoft
6、heriverwasfullofrubbish.Butitusedtobesoclean!Yes,butpeoplearethrowinglitterintotheriver.Everyoneinthistownshouldplayapartincleaningitup!1.Weretryingtosavetheearth!我们正在竭尽全力拯救地球我们正在竭尽全力拯救地球!trytodo=tryonesbesttodo努力去做某事。努力去做某事。e.g.Everystudentshouldtrytostudyhardinordertostudyinauniversity.为了进入大学学习，每个
7、学生都应该为了进入大学学习，每个学生都应该努力学习。努力学习。2.Herearesomewordsrelatedtodifferentkindsofpollution.berelatedto与与有关有关e.g.Iamnotrelatedtohiminanyway.我和他无任何关系。我和他无任何关系。3.Everyoneinthistownshouldplayapartincleaningitup!playapartin在在方面起作用方面起作用e.g.Agooddietplaysalargepartinhelpingpeoplelivelonger.健康的饮食在帮助人们长寿方面起着健康的饮食在帮
8、助人们长寿方面起着非常大的作用。非常大的作用。playapart在在中扮演角色中扮演角色e.g.HewasinvitedtoplayapartinthisTVplay.他被邀请参加这个电视剧的演出。他被邀请参加这个电视剧的演出。4.Eventhebottomoftheriverwasfullofrubbish.Yes,butpeoplearethrowinglitterintotheriver.litter和和rubbish都可指都可指“垃圾垃圾”，用作，用作不可数名词不可数名词。rubbish指指“没用的东西没用的东西(被扔或将要丢被扔或将要丢弃的无用的东西弃的无用的东西)”不可回收不可回收
9、。litter指指“(室内或公共场所室内或公共场所)乱扔的废物乱扔的废物(纸屑、不要的包装纸、废瓶等纸屑、不要的包装纸、废瓶等)”还可回还可回收。收。2aListentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.A.landpollutionB.airpollutionC.noisepollutionD.waterpollution1.Theairisbadlypollutedbecausethereare_ontheroadthesedays.2.Factoriesthatburncoalalso_the
10、airwithalotofblacksmoke.3.Thereisalsotoomuchrubbishandwaste.People_thingseveryday.4.Peoplearealsolitteringin_likeparks.Thisisturningbeautifulplacesintouglyones.morecarspollutearethrowingawaypublicplaces2bListenagainandcompletethesentences.(98)Role-play conversations between Jason and Susan.2cTheairh
11、asbecomereallypollutedaroundhere.Imgettingveryworried.Yes,Iusedtobeabletoseestarsinthesky.TheproblemisthatWhat should we do to save the earth?Turn off the lights when you leave a room.关掉关掉stop riding in carsstop using paper towels or napkins（餐巾，餐巾纸）（餐巾，餐巾纸）recycle books and paper回收利用回收利用2dRead 2d an
12、d complete the chart.ProblemsSolvingproblemsairpollutionwastepollutionwooden(木头的木头的)chopsticksorplasticforksrubbishtakethebus,subwayorrideabikeinsteadofdriving.bringabagtogoshopping.usechopsticksorforksathome.throwrubbishinthebins.Jason and Susan,what are your ideas for solving these problems?Yeah,o
13、rrideabike.Thereareotheradvantages(优点优点)ofbikeriding.Itsgoodforhealthanditdoesntcost(花费花费)anything!Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.Great ideas!What about waste pollution?Me,too.Also,Inevertakewoodenchopsticksorplastic(塑料塑料)forkswhenIbuytakeaway(外卖食品外卖食品)food.Ius
14、etheonesathome.Mmm,Ithinksimplethingslikebringingabagtogoshoppingcanhelp.Istarteddoingthatayearago.Andremembertothrowrubbishinthebinsandkeeppublicplacescleanandbeautifulforeveryone.So together,our actions can make a difference and lead to a better future!1.Thisisturningbeautifulplacesintouglyones.tu
15、rninto把把变成变成e.g.Theicyrainseemedliketoturnintosnow.渐渐地冻雨又变成雪花的模样。渐渐地冻雨又变成雪花的模样。2.Itsgoodforhealthanditdoesntcostanything!costv.花费；使付出花费；使付出指花费金钱，主语通常是物。指花费金钱，主语通常是物。cost的过的过去式和过去分词均为去式和过去分词均为cost。e.g.ThenewshirtcostMrWang200yuan.王先生花了王先生花了200元买了新衬衫。元买了新衬衫。Howmuchdoesthenewcomputercost?新电脑花了多少钱？新电脑花了
16、多少钱？take,spend,pay&costtake，spend，pay和和cost都可以表示都可以表示“花花费费”，但它们的用法各有不同。，但它们的用法各有不同。1)take多表示花费时间多表示花费时间，常用于，常用于Ittakessb.sometimetodosth.这一句型中，其这一句型中，其中中it作形式主语作形式主语。e.g.Itusuallytakesme40minutestocookthedinner.2)spend多表示花费时间和金钱，主语通多表示花费时间和金钱，主语通常是人常是人，常用于，常用于sb.spend(s)sometime/moneyonsth.和和sb.spen
17、d(s)sometime/money(in)doingsth.两种句型。两种句型。e.g.Davidspent2,000yuan onthenewmachine.Myfatherspendsanhour(in)watchingthenewsonTVeveryday.3)pay多表示花费金钱，主语通常是人多表示花费金钱，主语通常是人，常用于常用于sb.pay(s)somemoneyforsth.句句型。型。e.g.Tommypaid20yuanforhisbreakfastyesterday.4)cost多表示花费金钱，主语通常是物多表示花费金钱，主语通常是物，常用于常用于sth.cost(s)
18、(sb.)somemoney.句句型。型。e.g.ThenewdresscostLinda88yuan.根据句意用根据句意用take,spend,pay或或cost的适当的适当形式填空。形式填空。1.Thatnewcar_themlotsofmoney.2.Mona_50yuanonthebooksjustnow.3.Itusually_meanhourtodomyhomework.costspenttakes4.Youshould_sometimepractisingyourpronunciation.5.Mybrother_6,000yuanforthenewcomputeryesterd
19、ay.spendpaid3.Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!makeadifference(to)表示表示(对对)产生影响或作用产生影响或作用e.g.Doyouthinkhiswordswouldmakeanydifferencetothefinaldecision?你认为他的话会对最后的决定产生影你认为他的话会对最后的决定产生影响吗？响吗？ThenewteacheralwaysencourageslittleTom.Thishasmadeabigdifferencetohim.新来的老师总是鼓励小汤姆，这对他影新来的老师总是鼓励小汤姆，这对他影响很大。响很大。The earth is badly polluted.Please make a poster and think of what we can do.1.Copy the new words and remember them.2.Read the listening materials of 1b,2a.