UNIT-9--Saving-the-earthVIP专享VIP免费

TheLecturer:ShenKailaiInQingyuanDec.18,2004TASK1WarmingupWhatisthebiggestproblemfacingtheearth1.Whatisthebiggestproblemfacingtheearth?Whydoyouthinkso?2.Whatcausestheproblem?3.Whatcanwedotosolvetheproblem?4.Whatdoyouexpecttolearninthisunit?DiscussioDiscussion:n:WaterpollutionWaterpollutionWaterpollutionRubbishmountainRubbishmountainWecaneasilyfindsuchsceneseverywhereWecaneasilyfindsuchsceneseverywhereinbigcities.inbigcities.Peoplearetryingtodealwithrubbishnow.Peoplearetryingtodealwithrubbishnow.Trash/garbageAirpollutionAirpollutionBetterourcityDeforestationDeforestationDestroyforestsHowagreenworldHowagreenworldbecomesadesert?becomesadesert?DesertificationWemustdosome-thingtoWemustdosome-thingtostopit!stopit!FaminevictimsStarvationRefugeesinAfghanRefugeesinLibyahelpthemselvestofood.RefugeesinIndiaafterabigflood.AconcertisbeingheldforAfricanrefugees!TASK2GroupworkDiscussthequestionsingroupsoffour**Whatisthebiggestproblemfacingtheworld?A:Ithinkthatwaterpollutionisthemostseriousprob-lemfacingtheearthbecauseweallneedcleanwatertosurviveandanimalsandplantsneedcleanwater,too.B:Inmyopinion,thebiggestproblemsfacingtheeartharestarvationanddesertification.Ifourlandturnsintodesert,wewon’tbeabletogrowenoughfood.Thatmaycausestarvation.Picture1:Wastewaterfromfactoriesandcitiesshouldbestoppedfromgoingoutintotheriversandlakesandoceans.Wecanusenewtechnologiestocleanthewastewater.Weshouldalsobemorecarefulwithourlimitedfreshcleanwater,trytouselessandrecycleasmuchwateraspossible.Picture3:Airpollutionisveryseriousinsomebigcities,whichdoesgreatharmtopeople’shealth.Wastegasesfromfactoriesandcarsshouldbestopped.Wecanreduceairpollutionbyusingnewtechnologiesandusinglessenergy.Theharmfulsmokeshouldbemadecleanbeforeitgoesintotheair.Plantingmoretreesisalsoaverygoodwaytocleantheair.Picture2:Garbageisalsoaveryseriousproblem.Wecanseerubbishalmosteverywhere.Wemusttrytoreducetheamountofgarbage/rubbish.Wecandoitbyproducingandbuyingproductsthatuselesspackagingorwrapping.Weshouldneverthrowgarbage/rubbishinthestreetsorinnature.Weshouldalsotrytorecycleasmuchaspossible.Picture5:Ifourlandturnsintodesert,wewon’tbeabletogrowenoughfood.Thatmaycausestarvation.Desertificationismainlycausedbydeforestationandchangesinclimate,whichcanbereducedifwetryto“repair”desertandprotectareasthatareindangerofbecomingdesert.Picture4:Ourneedforwoodandfuelcausedeforestation,whichinturnleadstodesertification.Weshouldmakestrictlawstoprotecttheforests.Wecanreducetheeffectsofdeforestationbyplantingnewtreesandwecanalsotrytouselesswood.Picture6:Starvationismainlycausedbytheunevendistributionofwealthandsometimesbywarornaturaldisasters.Peoplewhogethungrymustgethelp.Therearemanyrichcountriesandtheyshouldhelppeoplewhocan’tgetenoughfood.Wecanreducestarvationbyredistributingthewealthofrichcountries,byprovidingeducationandtechnologytodevelopingcountries,andbygivingmonetaryaidtodisaster-strickenareas.**Whatdoyouexpecttolearninthisunit?Iexpecttolearnmoreabouttheproblemsfacingtheearthandwhatwecandotosolvetheproblems.IalsoexpecttolearnwordsthatIcanusetotalkaboutnatureandenvironment.Iamgoingtolearnthembyreadingandlisteningandbytalkingtomyclassmates.TASK3SpeakingShouldweusethecoalorshouldwenot?Wemustmakesurethat…./It’sclearthat…./Ibelievethatwemust…./I’mallfor…./Ifnothingisdone…,then….Ican’timaginethat…./Sure/Certainly/Absolutely./Itwouldbebetterifwe…./Isthereabetterwayto…?UsefulExpressionsTASK4GroupworkLet’shaveadiscussion!AsampleAsampledialogue:dialogue:C=CitizenS=ScientistL=LeaderE=EnvironmentalistB=BusinessmanL:Goodmorning.Iwouldliketothankallofyouforbeingheretoday.We’regoingtodiscussaveryim-portantissue.Asyouknow,thereisalotofcoalinourarea.Coalisavaluableresourcewhichcanbeusedtoproduceenergy,butitcanalsocauseveryseriouspollution.Todayweneedtodiscussthepro-blemanddecidewhattodowithit.B:Ithinkthatweshouldburnthecoalbe-causeourareaneedstobedeveloped.Wemustmakesurethatourcitizenshavejobsandourchildrencangetgoodeducation.It’sclearthatweneedenergyandmoneytomakeourlifebetter.Thecoalistheonlychance.Wemustuseit.E:Excuseme,butI’mafraidIcan’tagreewithyou.Ithinkthereareotherwaystodevelopourarea.Ifweusethecoal,wewillpollutetheairandwater.Wemaybeabletomakemoney,butthedamagewecausecan’tberepaired.Wemustn’tforgetthatweareresponsibleforthefuture.It’snotrighttotodevelopeconomyatthecostoftheenvironment.S:It’sclearthatburningcoalcandoharmtotheen-vironment,buttherearewaystoreducethedanger.Wewillbeabletodevelopnewcleanerwaystousethecoal.Thenwecandevelopourareawithoutpol-lution.Ofcourse,weneedmoremoneytodothere-searchwork.C:Butwherewillthemoneycomefrom?Wemustusethecoalsothatwecandevelopourareaassoonaspossiblebecausewedon’thavemuchtimetowait.Ifnothingisdone,ourareawillbecomepoorerandpoorer.Iagreewemustdowhatwecantoprotecttheenvironment,butwemustalsomakesurethatwecandeveloptheeconomyofourarea.2.Languagestudy—wordstudy—p.69Homework1.Preview“Reading”andtrytounderstandit.Thankyou.TheEnd