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Theearthispolluted.airpollutionThefactoriesthatburncoalpollutetheairwithalotofblacksmoke.n.煤炭Factoriesputwasteintotheriver.waterpollutionmobilephonepollutionlitterv.乱扔n.垃圾rubbishwaste垃圾，废弃物Peopleshouldthrowawaylitterinthebin.n.垃圾箱noisepollutionTherearemorecarsontheroad.1aHerearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.noisepollution________________________________________________airpollution____________________________________________waterpollution________________________________________________loudmusicplanesmobilephonesfactoriescarssmokingshipsfactorieslitteringrubbishbuildinghousesbuildinghousesloudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephones1bListenandcompletethesentences.Whatwastheproblem?Theriverwas_____________.Eventhebottom(底部)oftheriverwasfullof_________.Therewerenomore______forfishermen(渔民)tocatch.reallydirtyrubbishfishWhatcausedtheproblem?Peoplearethrowing_______intotheriver.Factoriesareputting______intotheriver.Howshouldtheproblembesolved?Weshouldwritetothe____________andaskthemto___________thefactories.Everyoneshouldhelpto__________theriver.litterwastegovernmentclosedowncleanupListenagainandcheck(√)thesentencesyouhear.1.Wecouldgofishingintheriver.2.Theriverwasreallydirty.3.Theriverhasalwaysbeenthenicestriverinthistown.4.Weshouldasktheteachersforhelp.√√1cTheriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Butitusedtobesoclean!Yes,butpeoplearethrowinglitterintotheriver.Everyoneinthistownshouldplayapartincleaningitup!Makeconversationsusingthepollutionin1a.Theriverhasalwaysbeenthenicestriverinthistown.Yes,itusedtobesoclean.Whatcausedtheproblem?ButIwastherelastweekendandtheriverwasreallydirty.Factoriesarealsoputtingwasteintotheriver.Peoplearethrowinglitterintotheriver.Whatshouldwedo?Yes,everyoneinthistownshouldplayapart.Weshouldwritetothegovernmentandaskthemtoclosedownthefactories.Whatelsecanwedo?Everyoneshouldhelptocleanuptheriver.1.We’retryingtosavetheearth!我们正在竭尽全力拯救地球!trytodo=tryone’sbesttodo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。2.Herearesomewordsrelatedtodifferentkindsofpollution.berelatedto与…有关e.g.Iamnotrelatedtohiminanyway.我和他无任何关系。3.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。4.Eventhebottomoftheriverwasfullofrubbish.Yes,butpeoplearethrowinglitterintotheriver.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。2aListentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.A.landpollutionB.airpollutionC.noisepollutionD.waterpollution2bListenagainandcompletethesentences.1.Theairisbadlypollutedbecausethereare___________ontheroadthesedays.2.Factoriesthatburncoalalso________theairwithalotofblacksmoke.morecarspollute3.Thereisalsotoomuchrubbishandwaste.People_________________thingseveryday.4.Peoplearealsolitteringin______________likeparks.Thisisturningbeautifulplacesintougly(丑陋)ones.arethrowingawaypublicplaces1.Whoistheinterviewertalkingto?2.Whataretheytalkingabout?3.Whatotherproblemsdotheysee?SusanandJason.Theenvironmentalproblems.There’stoomuchrubbishandwasteinthestreets.Role-playconversationsbetweenJasonandSusan.2cTheairhasbecomereallypollutedaroundhere.I’mgettingveryworried.Yes,Iusedtobeabletoseestarsinthesky.Theproblemisthat…Whatshouldwedotosavetheearth?Turnoffthelightswhenyouleavearoom.关掉stopridingincarsstopusingpapertowelsornapkins（餐巾，餐巾纸）recyclebooksandpaper回收利用2dRead2dandcompletethechart.ProblemsSolvingproblemsairpollutionwastepollutionwooden(木头的)chopsticksorplasticforksrubbishtakethebus,subwayorrideabikeinsteadofdriving.bringabagtogoshopping.usechopsticksorforksathome.throwrubbishinthebins.JasonandSusan,whatareyourideasforsolvingtheseproblems?Yeah,orrideabike.Thereareotheradvantages(优点)ofbikeriding.It’sgoodforhealthanditdoesn’tcost(花费)anything!Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.Greatideas!Whataboutwastepollution?Me,too.Also,Inevertakewoodenchopsticksorplastic(塑料)forkswhenIbuytakeaway(外卖食品)food.Iusetheonesathome.Mmm,Ithinksimplethingslikebringingabagtogoshoppingcanhelp.Istarteddoingthatayearago.Andremembertothrowrubbishinthebinsandkeeppublicplacescleanandbeautifulforeveryone.Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!1.Thisisturningbeautifulplacesintouglyones.turn…into…把……变成……e.g.Theicyrainseemedliketoturnintosnow.渐渐地冻雨又变成雪花的模样。2.It’sgoodforhealthanditdoesn’tcostanything!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cost。e.g.ThenewshirtcostMrWang200yuan.王先生花了200元买了新衬衫。Howmuchdoesthenewcomputercost?新电脑花了多少钱？take,spend,pay&costtake，spend，pay和cost都可以表示“花费”，但它们的用法各有不同。1)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.Itusuallytakesme40minutestocookthedinner.2)spend