6/6Unit4寫(xiě)作課公開(kāi)課教學(xué)設(shè)計(jì)（一）GlobalWarming寫(xiě)作課教學(xué)設(shè)計(jì)授課者：廣東番禺中學(xué)吳茜，教齡17年，中教一級(jí)授課對(duì)象：廣東番禺中學(xué)高二（4）班課型：高二讀寫(xiě)課寫(xiě)作類型：“Causeandeffect”essays寫(xiě)作話題：Globalwarming課題名稱：人教版Book6Unit4Globalwarming寫(xiě)作課設(shè)計(jì)意圖：基于高中英語(yǔ)文本閱讀，提高學(xué)生寫(xiě)作能力授課時(shí)間：40分鐘（一）學(xué)生難度預(yù)測(cè)作為高二年級(jí)的學(xué)生，雖然完成了課本閱讀部分的學(xué)習(xí)，積累了話題寫(xiě)作的一些短語(yǔ)及結(jié)構(gòu)，但是無(wú)法在寫(xiě)作中有效輸出，教師需要?jiǎng)?chuàng)設(shè)情景，鼓勵(lì)并引導(dǎo)學(xué)生在話題寫(xiě)作中使用相應(yīng)的短語(yǔ)及結(jié)構(gòu)。（二）語(yǔ)言材料分析本課時(shí)是人教版選修6第4單元“Globalwarming”的寫(xiě)作課，充分運(yùn)用“i-1”語(yǔ)言材料選材原理，選用外研社版必修3Module4SandstormsinAsia中“readingandvocabulary”以及北師大版選修8Unit22GlobalWarming和NaturalDisasters中的文段整合成一節(jié)寫(xiě)作課。讓學(xué)生閱讀相關(guān)話題的語(yǔ)篇，探究表達(dá)因果關(guān)系的短語(yǔ)及結(jié)構(gòu)，然后通過(guò)mini-speech的口語(yǔ)活動(dòng)展開(kāi)話題討論，最終完成作文“Savetheearth,startfromme”。（三）教學(xué)目標(biāo)1.引導(dǎo)學(xué)生通過(guò)閱讀語(yǔ)篇，分析段落和語(yǔ)句，找出表達(dá)因果關(guān)系的方式。2.鼓勵(lì)學(xué)生勇于表達(dá)自己的觀點(diǎn)，讓觀點(diǎn)具有說(shuō)服力。3.培養(yǎng)學(xué)生的邏輯思維的思辨能力。（四）學(xué)習(xí)目標(biāo)1.學(xué)生能夠閱讀語(yǔ)篇，分析段落和語(yǔ)句，探究表達(dá)因果關(guān)系的方式。2.學(xué)生能夠在演講和寫(xiě)作中表達(dá)觀點(diǎn)和論證觀點(diǎn)。3.學(xué)生能夠?qū)W會(huì)應(yīng)用相關(guān)詞匯、結(jié)構(gòu)及句型來(lái)表達(dá)因果關(guān)系。（五）教學(xué)過(guò)程教學(xué)步驟：設(shè)計(jì)目的Step1Lead-in（見(jiàn)第3張幻燈片）Getthestudentstosharethesentencesfromthetextconcerningcauseandeffectanddiscussabouttheexpressionsorstructureswhichshowcauseandeffect1.Allscientistssubscribetotheviewthattheincreaseintheearth'stemperatureisduetotheburningoffossilfuelslikecoal,naturalgasandoiltoproduceenergy.2.Itmeansthatmoreheatenergytendstobetrappedintheatmospherecausingtheglobaltemperaturetogoup.3.Theyalsoagreethatitistheburningofmoreandmorefossilfuelsthathasresultedinthisincreaseincarbondioxide.4.Ontheonehand,DrFosterthinksthatanytrendinwhichthetemperatureincreasesby5degreeswouldleadtoacatastrophe.5.Ontheotherhand,GeorgeHambleystates,"Morecarbondioxideisactuallyapositivething.Itwillmakeplantsgrowquicker;cropswillproducemore;itwillencourageagreaterrangeofanimals—allofwhichwillmakelifeforhumanbeingsbetter."Step2Reading（見(jiàn)第4-5張幻燈片）1.GetthestudentstoreadfourparagraphstofindmoresentencesconcerningcauseandeffectanddiscovertheexpressionsandstructuresusedtoshowcauseandeffectParagraph1（北師大版Unit22,Lesson1）①Overthelast100years,theglobalaveragetemperaturehasincreasedby1°Fandmanyexpertsinsistthattheblameforthisglobalwarmingcanmostlybepinnedonhumanactivities.②Asaresultofincreasedindustry,agriculture,thecuttingdownofforests,theincreaseintransportandtheburningoffuels,nearly6tonesofcarbondioxidegoesintotheatmosphereeveryyearforeveryoneoftheearth's6billionpeople.③Theamountofcarbondioxideintheatmospherehasrisenbymorethan30%inthelast250yearswithhalfofthisincreaseoccurringsince1960.④Giventhisdata,itseemsthatthelinkbetweenhumanactivitiesandrisingglobaltemperaturesisnotmerelyacoincidence.Paragraph2（北師大版Unit22,Lesson1）①Atemperatureincreaseof1°Fmaynotsoundlikealot,butifwecontinuetoproducecarbondioxideandothergasesinsuchhugequantities,wearecondemninglifeonEarthandshouldexpectsevereconsequences.②Recentreportswarnedthatglobalwarmingwillcauseterribleclimatechangesincludingmorefrequentflooding,heatwavesanddroughts.③Seriousdiseaseswillspreadandindustriesthatrelyonnaturesuchasfishingwillbebadlyaffected.④Increasedtemperatureswillalsocausethepolaricetomelt,raisingsealevelsandfloodingmanyislandsandcities.Paragraph3（北師大版Unit22,Lesson3）①Inthelastdecade,thunderstorms,floods,earthquakes,typhoons,volcaniceruptions,tsunamisandforestfireshavebecomeincreasinglycommon.②TherehasbeenterriblefloodinginAsia,Africa,AmericaandOceania.③EvenEuropehassufferedandlargeareashavebeenunderwater.④Stormshavebeengettingworseeverywheretoo,withagrowingnumberofhurricaneshittingtheUS,andCentralAmerica.⑤ReducedrainfallhasaffectedlargeareasofAfricaforyears,leavingirrigationcanalsdryandmanyotherzonesarebecomingdrier.⑥Forexample,theYellowRiver,oncefamousforflooding,failedtoreachthesealevelatallfor226daysin1997.⑦Anumberofnationshavealreadybeeninarmedconflictoverwater,andreducedrainfallinthewestoftheUShasresultedinhugeforestfires.Paragraph4（外研社版必修3Module4）①Sandstormsarestrong,drywindsthatcarrysand.②Theyareoftensothickthatyoucannotseethesun,andthewindissometimesstrongenoughtomovesanddunes(沙丘).③ThefourmainplacesintheworldwheretherearesandstormsareCentralAsia,NorthAmerica,CentralAfricaandAustralia.④RenJianbo,fromInnerMongoliadescribedaterriblesandstormheexperiencedasachildinthedesert.⑤"Tohavebeencaughtinasandstormwasaterribleexperience,"hesaid.⑥"Therewasnothingtobedone.ItwasthemostfrighteningandthemostdangeroussituationI'veeverbeenin.Youjusthadtohopeyou'dsurvive.IthoughtIwasgoingtodisappearunderthesand."2.SummarizetheExpressionsandstructuresusedtoshowcauseandeffect.Expressions:dueto,resultin,leadto,asaresultof,…Structures:-ing,Non-restrictiveattributiveclause,so…that…Step3Mini-speech（見(jiàn)第6-17張幻燈片）1.Getstudentstodiscussingroupsaboutsomebadphenomenaoncampuswhichcontributetoglobalwarmingandappealtotheschoolmatestotakesomeaction.2.Geteachstudenttogiveamini-speech.3.Mini-speechpresentationinclass.Step4Writing（見(jiàn)第18張幻燈片）Getstudentstowritealetterofappeal"Savetheearth,startfromme",usingtheexpressionsandstructureslearnedinreading.Step5PeerAs