Unit3SeaExplorationUsingLanguage(II)课件-高二英语人教版选择性

Unit3Period4UsingLanguage(Ⅱ)Expressyouropinionsonseaexploration1.通过阅读两篇议论短文，了解海洋探索对于人类的利弊，能够树立正确的海洋观；2.能掌握议论文的问题结构和语言特征，完成议论文写作。新课导入课堂学习Pre-readingShouldtheseabeexplored?Readthetwotextsandanswerthequestions.SkimmingWhatisthetexttypeofthetwopassages?Whatarethethreepartsinargumentativeessay?Argumentativeessay.Argument,evidence,restatement/recommendation/acalltoaction.Scanning1Readthetwotextsbelowandfindtheargumentsandevidenceinthem.argument

evidenceText1Explorationcausespollution.DeepwaterHorizonoilspillPlasticpollutionMiningforresourcesisdamaging.IthurtstheArctic.Burningfossilfuelsaddstoclimatechange.Overfishingisanissue.Whalesanddolphinsarehunted.Banned,butsomecountriesstilldoingit.Text2argument

evidenceSeaexplorationisimportantforourfuture.Scientificresearchshipscanhelpaddressimportantissueslikeclimatechange.Understandingmoreabouttheseawillalsohelpusmanageitsresourcesbetter.Newmedicines,foodresourcesandenergy.Predicteventssuchasearthquakes.Weneednewresourcesforfuturedevelopment.Vastamountsofresourcesmaybeundertheseaandice.Lookatthetwochartsbelowanddecidewhichonesupportswhichtext.2Text2Text1Ingroups,discussthefollowingquestionsandtakenotes.31.Whatisyouropinionaboutseaexploration?Doyouagreewithoneargumentmorethantheother?2.Hasyouropinionchangedafterreadingthetwotexts?Whyorwhynot?Ithinkseaexplorationisawonderfulidea,becauseeveniftherearenoimmediaterewardsforit,toexploreandfindoutmoreaboutourworldisalwaysagoodthing.Yes,myopinionhaschanged.BeforereadingText1,Ididnotknowthatseaexplorationcouldaddtoseapollution,viadeepseadrillingforexample.3.Arethereanyotheraspectsofseaexplorationnotmentionedthatyouthinkareimportant?Wedonotknowwhatwedon’tknow;Weneedtoexploretheoceansothatwecanbetterunderstandissuessuchasacidificationwhichleadstoseawatertobecomemoreacidic,andhowtofighttheseproblems;Studyingtheoceancausesthecreationofnewtechnologiesthatcanhelpusinotherareas.Basedonyournote,writeanargumentativeessayonseaexploration,expressingyouropinionswithsupportingfacts.41)Thefollowingquestionsmayhelpyou.Whatisthepurposeofseaexploration?Howdoesseaexplorationhelpustoprotectthesea?Howdoesseaexplorationcausedamagetothesea?Isthereagoodbalancebetweenprotectionandexploitation?2)UsethePEELmethodtohelpstructureyourargument.PointEvidenceExplanationLinkWhatpointdoyouwanttomake?Whatfactsandexamplescanyoufindtosupportyourpoint?Howreliablearethesources?Explainhowthefactssupportyouropinionandshowotheropinionstobeincorrect.Connectthispointtothenextpoint,orbacktothemainpointoftheessayorparagraph.3)Writeyourdraftandexchangeitwithapartner.Usethechecklisttohelpeachotherrevisethedrafts.4)Getyourfeedbackandreviseyourdraft.YesNoIsthepointclearenough?Arethereanyexamplesorfactsthatsupporttheargumentstrongly?Isthereanyexplanationonhowtheevidencesupportstheopinion?Aretheresomeconnectiveslinkingonepointtoanother?Eventhoughtheoceansmakeupabout70%oftheearth’ssurface,morethan80%oftheoceansremainunexplored.Whilesomepeoplesaythatweshouldnotexploretheoceans,theirreasoningisnotverysound.Exploringisnotthesameasexploiting.Whenweexploreaplace,wegojusttoseeandunderstandwhatisthere.Weshouldexploretheocean,firstandforemost,becausewedonotknowwhatwedonotknow.Wethoughtweknewmanyabouttheocean,butwewerewrong.Therecouldbelifeformsintheocean,forexample,thatfitnoneoftheneatcategorieswehaveforlifewhilewehavenocluethattheyevenexist.Thisbringsupthesecondpoint.Wealreadyknowmanythingsabouttheocean,butweneedtolearnmore.Agoodexampleisoceanacidification.Weknowthatitiscausingcoraltodie.Weknowthatusinglessfossilfuelwouldcausetheprocesstoslowdown.However,weneedtolearnmoretofindouthowtostopit.Weneedmoreresearchtoseewhatisgoingon,andtocomeupwithplansandsolutions.Finally,todothisresearch,wehavetoenteranextremeenvironmentnotveryfriendlytohumans.Thisrequiresthedevelopmentofnewtechnologiesthatcanalsobenefitusinotherareas.Forexample,inmanyways,thedeepoceanresemblesouterspace.Thetechnologiescanbenefiteachother.Foranotherinstance,thetechnologyofamechanicalarmtocollectsampleswithhasbeenusedinfactoriesanddevelopmentofartificiallimbsforhumans.Allinall,therearemanygoodreasonstoexploretheoceans.Ifwecareaboutscience,aboutprotectingouroceans,andaboutdevelopingnewtechnologies,weneedtodoallwecantosupportoceanexploration.Languagepoints1.Whenpeopletalkofexploringtheseamore,theyusuallymeanexploitingit.当人们谈论更多地探索海洋时，他们通常意味着开发它。exploitvt.开发；利用；剥削※exploitsth.todosth.

利用某事做某事※exploitsb.withsth.用......剥削某人※exploitationn.开发；利用；剥削※explorern.开发者；剥削者Thecontrolled____________(exploit)ofsearesourcescanprotectmanyspecies.exploitation2.Althoughthiswasbannedin1982,somecountriesarestill“murdering”theseintelligentcreatureswithoutmercy.尽管这在1982年被禁止,一些国家仍然毫不留情地“谋杀”这些聪明的动物。mercyn.仁慈;宽恕;恩惠showmercytosb/havemercyonsb

怜悯某人atthemercyof...

任由……摆布；忍受……控制It'samercythat...……真是万幸。withoutmercy

毫不留情mercifuladj.

仁慈的；宽大的bemercifulto/towardssb

对某人仁慈3.Theseaishometolife,nothumanbeings’possessions.海洋是生命的家园，而不是人类的私产。possessionn.个人财产；拥有；控制beinpossessionof拥有……（主语为人）beinthepossessionof(sb)=beinone’spossession（某物）被（某人）拥有comeintoone’spossession为某人所拥有take/comeintopossessionof占有；拥有possessv.占有，拥有；控制，支配。1)这伙人被逮住了，人赃俱获。Thegangwascaught___________________stolen

goods.2)离开宾馆时请记得随身携带好你的私人物品。Pleaseremembertotakeallyour____________________withyouwhenyouleavethehotel.inpossessionof

personalpossessions

4.Loggingnewspecieswillimproveourunderstandingoflifeontheearth.记录新物种将提高我们对地球上生命的了解。logvt.把……载入正式记录;记录

n.正式记录;日志;原木login/on注册，登记login/onto

登录logoff/out

注销；结束5.Althoughthiswasbannedin1982,somecountriesarestill“murdering”theseintelligentcreatureswithoutmercy.尽管这在1982年被禁止,一些国家仍然毫不留情地“谋杀”这些聪明的动物。本句是一个复合句。somecountriesare...是主句;although=though是从属连词,意为“虽然……;尽管……”,引导让步状语从句。Althoughthesunwasshining,itwasn’tverywarm.尽管太阳高照,天却不是很暖和。

though/although的用法(1)用作连词表示“虽然”,两者大致同义,可换用,只是although比t