高二-人教版-英语选择性必修四-第三单元《Lesson 5 Reading and writing》课件

高二—人教版—英语选择性必修四—第三单元

Unit3SeaexplorationLesson5ReadingandwritingRevisionInthelastperiod,wehave:1.learntaboutwhalesandotherseaanimals;2.raisedtheawarenessofmarineecosystemconservation.Attheendofthislesson,youwillbeableto:1.understandthebasicstructureofanargumentativeessay;2.distinguishargumentsandevidenceinthetext;3.masterthelanguagethatexpressesagreementanddisagreement;4.writeanargumentativeessay.AimsofthislessonLead-in:Doyouthinktheseashouldbeexplored?Astudent’sanswer:Ithinkseaexplorationisnecessary.Notonlycanwegainmoreresourcesunderthesea,butalsoitisagoodwaytoimproveourunderstandingoflifeontheEarth.Maintask:Expressyouropinionsonwhethertheseashouldbeexplored.ReadforgenreSkimthetwotextsonP32inthetextbookandanswer:Whatisthetexttypeofthetwotexts?Texttype:argumentativeessay(议论文)Theargumentativeessayisagenreofwritingwiththefeatureofpersuadingreadersthatsomethingistrue.Italwaysbeginswithanopinionaboutanongoingcontroversyordiscussion,andthengivesreasonstosupportthatopinion.ReadPara.1ofeachtextandfindoutthethesisstatement(中心论点)ofeachtext.ReadforstructureGroupwork:Readtherestofthetextsanddrawastructuretreeforeachtext.Text1Text2+argument1:

Seaexplorationisimportantforourfuture.argument2

argument3Pairwork:Readthetwotextsagainandfindouttheargumentsandevidence.ReadforargumentsandevidenceText1&Text2arguments

evidenceText1Para.2argumentevidence1evidence2Text1arguments

evidence1Explorationcausespollution.·DeepwaterHorizonoilspill·Plasticpollution2Miningforresourcesisdamaging.·IthurtstheArctic.·Burningfossilfuelsaddstoclimatechange.3Overfishingisanissue.·Whalesanddolphinsarehunted.·Banned,butsomecountriesstilldoingit.Text2arguments

evidence1Seaexplorationisimportantforourfuture.·Scientificresearchshipscanhelpaddressimportantissueslikeclimatechange.2Understandingmoreabouttheseawillalsohelpusmanageitsresourcesbetter.·Newmedicines,foodresourcesandenergy·Predicteventssuchasearthquakes3Weneednewresourcesforfuturedevelopment.·Vastamountsofresourcesmaybeundertheseaandice.Lookatthetwochartsbelowanddecidewhichonesupportswhichtext.(TBP33Ex.2)Text2Text1SummaryofstructureanalysisAcommonmethodforwritinganargumentativeessayisthefive-paragraphapproach.Bothtextsfollowthebasicpatternofathree-pointessay,whichis:Para.1:thesisstatementPara.2:argument1+evidencePara.3:argument2+evidencePara.4:argument3+evidencePara.5:conclusion/restatementReadthetwotextsagainandfindoutthefollowingexpressions:Expressionsthatprovethenegativeside:...causemanyproblems...isverydamaging...negativecycle...isanotherproblem...withoutmercyExpressionsthatprovethepositiveside:...helpaddressimportantissuesMoreresearchisnecessary....helpmanageitsresourcesbetter...helpusdiscovernewmedicines...helpuspredicteventsReadforlanguageGroupwork:brainstormmoreexpressions:Expressionsthatshowagreement:agreethat...approveoftheideathat...Supportersthinkthat......arefortheideathat...supportsth....Expressionsthatshowdisagreement:disagreethat...dispproveoftheideathat...Opponentsthinkthat......areagainsttheideathat...opposesth./beopposedtosth./objecttosth....1.有些人同意海洋探索，因为这能帮助我们解决如气候变化

的问题。Somepeopleagreewithseaexploration,becauseitcanhelp

usaddressissuessuchasclimatechange.2.有些人反对海洋探索。他们觉得这会造成很多问题。

Somepeopleareopposedtoseaexploration,whichtheythinkwillcausemanyproblems.TranslationpracticeGroupdiscussion:Whatisyouropinionaboutseaexploration?Doyouagreewithoneargumentmorethantheother?Arethereanyotheraspectsofseaexplorationnotmentionedthatyouthinkareimportant?CriticalthinkingAstudent’sanswer:

Whatisyouropinionaboutseaexploration?Doyouagreewithoneargumentmorethantheother?Ithinkseaexplorationisawonderfulidea,becauseeveniftherearenoimmediaterewardsforit,toexploreandfindoutmoreaboutourworldisalwaysagoodthing.

Astudent’sanswer:

Arethereanyotheraspectsofseaexplorationnotmentionedthatyouthinkareimportant?Weneedtoexploretheoceansothatwecanbetterunderstandissuessuchasacidification(酸化)whichleadstoseawatertobecomemoreacidic,andhowtofighttheseproblems.Studyingtheoceancausesthecreationofnewtechnologiesthatcanhelpusinotherareas.

Guidedwritingtask--expressyouropinions

假如你是李华，最近你们班就“人类是否应该进行海洋探索”进行了讨论，请根据讨论结果写一篇短文。

赞成的理由反对的理由你的看法1.获取更多的海底

资源；2.提高对地球上生命

的理解。1.造成海洋污染，导致海

洋生物死亡；2.破坏生态系统。......注意：开头已给出，不计入总词数Recently,ourclasshashadadiscussionabout...TaskAnalysis1.文体与目的：2.人称：

3.时态4.写作要点StructurePara.1说明讨论的话题，反映讨论结果Para.2说明正方和反方的观点及理由Para.3表明自己的观点议论文，反映讨论结果第三人称一般现在时为主LanguageforwritingExpressionsthatprovethenegativeside:...causemanyproblems...isverydamaging...negativecycle...isanotherproblem...withoutmercyExpressionsthatprovethepositiveside:...helpaddressimportantissuesMoreresearchisnecessary....helpmanageitsresourcesbetter...helpusdiscovernewmedicines...helpuspredicteventsExpressionsthatshowagreement:agreethat...approveoftheideathat...Supportersthinkthat......arefortheideathat...supportsth....Expressionsthatshowdisagreement:disagreethat...dispproveoftheideathat...Opponentsthinkthat......areagainsttheideathat...opposesth./beopposedtosth./objecttosth....ChecklistIntoday’sclass,wehave:1.exploredtwoargumentativeessaysandunderstoodthebasicstructure;2.distinguishedargumentsandevidenceinthetext;3.learnedaboutthelanguagethatexpressesagreementanddisagreement;4.analyzedthewritingtaskandgotreadyforwriting.SummaryPleasefinishthewritingtask.HomeworkThankyouforlistening!高二—人教版—英语选择性必修四—第三单元

Unit3SeaexplorationLesson5Readingandwriting答疑Pleasefinishthewritingtask.Astudent’swriting:合并为一段内容应改为反对海洋探索的理由。understandingtoAstudent’swriting:creaturesReferencedversion:

Recently,ourclasshashadadiscu