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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。Theearthispolluted.airpollution空气污染Thefactoriesthatburncoalpollutetheairwithalotofblacksmoke.n.煤炭Factoriesputwasteintotheriver.waterpollution水污染n.废弃物noisepollution噪音污染Therearemorecarsontheroad.1aHerearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.2.Herearesomewordsrelatedtodifferentkindsofpollution.berelatedto与…有关e.g.Iamnotrelatedtohiminanyway.我和他无任何关系。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.litterwastegovernmentclosedowncleanuplitterv.乱扔【U】n.垃圾rubbishwaste垃圾废弃物Peopleshouldthrowawaylitterinthebin.n.垃圾箱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。1cTheriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Butitusedtobesoclean!usedto&beusedtodoing&beusedtodo的区别•usedtodosth.过去经常，以前常常(现在不做了)Weusedtogothereeveryyear.我每年都去那儿。Heisnotwhatheusedtobe.他已不是旧日的他了。•beusedtodoing习惯于做某事He’squiteusedtohardwork.(workinghard)他颇习惯于艰苦工作。•beusedtodosth.被用来做…Woodisusedtomakepaper.木材被用来造纸。Yes,butpeoplearethrowinglitterintotheriver.Factoriesarealsoputtingwasteintotheriver.Whatshouldwedo?Everyoneinthistownshouldplayapartincleaningitup!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。Weshouldwritetothegovernmentandaskthemtoclosedownthefactories.Whatelsecanwedo?Everyoneshouldhelptocleanuptheriver.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.Thisisturningbeautifulplacesintouglyones.turn…into…把……变成……e.g.Theicyrainseemedliketoturnintosnow.渐渐地冻雨又变成雪花的模样。1.Whoistheinterviewertalkingto?2.Whataretheytalkingabout?3.Whatotherproblemsdotheysee?SusanandJason.Theenvironmentalproblems.There’stoomuchrubbishandwasteinthestreets.Role-playconversationsbetweenJasonandSusan.2cTheairhasbecomereallypollutedaroundhere.I’mgettingveryworried.Yes,Iusedtobeabletoseestarsinthesky.Theproblemisthat…Whatshouldwedotosavetheearth?Turnoffthelightswhenyouleavearoom.关掉Takethebusorsubwayinsteadofdrivingstopusingpapertowelsornapkins（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,weshouldtakethebusorsubwayinsteadof（代替）driving.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；Ittakessb.sometimetodosth.其中it作形式主语。e.g.Itusuallytakesme40minutestocookthedinner.2)spend多表示花费时间和金钱，主语通常是人；sb.spend(s)sometime/moneyonsth.=sb.spend(s)sometime/money(in)doingsth.e.g.Davidspent2,000yuanonthenewmachine.Myfatherspendsanhour(in)watchingthenewsonTVeveryday.3)pay多表示花费金钱，主语通常是人，sb.pay(s)somemoneyforsth.e.g.Tommypays20yuanforhisbreakfast.4)cost多表示花费金钱，主语通常是物，sth.cost(s)(sb.)somemoney.e.g.ThenewdresscostLinda88yuan.根据句意用take,spend,pay或cost的适当形式填空。1.Thatnewcar________themlotsofmoney.2.Mona__________50yuanonthebooksjustnow.3.Itusually_______meanhourtodomyhomework.4.Youshould__________sometimepractisingyourpronuncia