高中英语选修6教案:Unit 4 Global warming

高中英语选修6教案:Unit 4 Global warming

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Warming-upLeadinginbybrainstormPutthestudentsintogroupsoffouranddiscussthefollowingquestions:1.Whatdoweuseenergyfor?2.Whatarethesourcesofenergy?3.Whatsourcesarerenewableandwhatarenon-renewable?1.(differently)1.Lights,heating,andallkindsofelectricequipmentuseenergy2.coal,oil,solarpanels,nuclearenergy,naturalgas,windpower,water,plantwaste,tidalenergy,ect.2.coal;oil;solarpanels;nuclearenergy;naturalgas;windpower;water;plantwaste;tidalenergy,ect.3.fillinaform:non-renewablenaturalgasrenewablethesea(tidalenergy)renewablehotspringsorgeysersrenewableplantwaste(biomassenergy)renewablewater(hydro-electricpower)non-renewableuranium(nuclearenergy)Renewable/non-renewableSourcesofenergyPre-reading1.Weusemuchenergyinourdailylife,whatistheeffectofusingenergyinourworld?Theuseofenergy---Giveoffcarbondioxide,otherwastedgasesandheatintotheair---Theearthisbecomingwarmerandwarmer.(globalwarming)Greenhouseeffect2.Howdoesagreenhousework?Thegreenhousetrapstheheatfromthesunandkeepsitfromescaping,whichcanmakeitheatupandsotheplantscangrowthroughoutthecoldperiod.3.Underthisgreenhouseeffect,whathappens?2.Theearthisbecomingwarmerandwarmer.[来源:学科网ZXXK] PeriodTwo:ReadingTopic:shortpassageaboutglobalwarming.[来源:Z&xx&k.Com]LeadinginTostimulateSs’interestinreadingthetext.DividetheSsintogroupsoffour.Discussthefollowingthreequestions.1.Whatisglobalwarming?Theearthisbecomingwarmer2.Howhasthiscomeabout?Humanactivity—burningoffossilfuelsGreenhouseeffect—greenhousegases—weneedgasesHugequantitiesofextracarbondioxide3.Whataretheeffectsofglobalwarming?ThesealeveltoriseSeverestorms,droughts,famines,thespreadofdiseases,andthedestructionofspecies.Task1:SkimmingAsktheSstohaveaquicklookatthemagazinearticle.Thenencouragethemtotellwhattheynoticeabouthowthetextisorganized.(Answer:Ithasatitle;afirstparagraphthatisinbold;themaintext;diagrams;twoquotes)Task2:ScanningToglanceatthetext,andanswerthefollowingquestions.1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?SophieArmstrongwrotethemagazinearticle.ThenameofthemagazineisEarthCare.2.Whatarethenamesofthethreescientistsmentionedinthearticle?TheyareDr.JaniceFoster,CharlesKeelingandGeorgeHambley.3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?Theydon'tagreewitheachother.Dr.JaniceFosterthinkstheeffectsofglobalwarmingcouldbeveryserious.GeorgeHambleythinksglobalwarmingwillbemildwithfewbadenvironmentalconsequences.CharlesKeelingbelievesitistheburningofmoreandmorefossilfuelsthatisresultinginabigincreaseincarbondioxide.4.Whatarethetwographsabout?GraphIshowsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.Graph2isaboutthecarbondioxidecontentintheatmosphere,1957--1997.5.Whatisthemaintopicofthearticle?Globalwarming/thewarmingoftheearth.Task3:IntensivereadingAskSstoreadthetextcarefullyandsumupthemainideaofeachpart.Partone(para1)Introduceadebateovertheissueofglobalwarming. Skills:RaisingaquestionParttwo(para2-3)Illustrate(explain)howglobalwarmingcomesabout.Skills:givingexamples,usinggraphs,explanationPartthree(para4-8)Listtwodifferentattitudesamongscientiststowardsglobalwarming.Skills:givingexamples,makingcontrast(comparison)Partfour(para9)It’suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot.Skills:usingaquestion,leavingreaderstothinkovertheissue.Task4:ListeningListentothetape.Afterit,togetSstofinishEx2onpage27.Task5:DiscussionTheearthisbecomingwarmer,inyouropinion,doesitmatter?Ifitdoes,asastudent,whatcanyoudoaboutit?PeriodThree:UsinglanguageStepI:Reading“Whatcanwedoaboutglobalwarming.”Leadingin:Askstudentstotellwhatcancauseglobalwarming.Presenttheirideastothewholeclassingroups.Task1:Askstudentstoreadthetwolettersandtrytoanswerthefollowingquestions:1.WhatareOuyangGuang’stwoconcerns?Gettingsomesuggestionsforwhathecandoaboutglobalwarming.Asanindividual,hecanhavenoeffectonenvironmentalproblems.2.DoestheEarthCareagreewithOuyangGuang’sopinionthatindividualscanhavenoeffect?No.Task2:AskstudentstoreadthelettersagainandlistEarthCare’ssuggestions.Turnelectricalappliancesoffwhennotusingthem.Don’tturnuptheheat,putonmoreclothes.Walkorrideabike,don’tdrive.Recycle.Buythingsmadefromrecycledmaterials.Buyproductsthatuselessenergy.Planttrees.Talkwithfamilyandfriendsaboutglobalwarming.Task3:Askstudentstodiscussthesequestions:Inwhatwayswouldyoutalkwithyourfamilyandfriendsaboutglobalwarming?StepII:WritingCollectinformationaccordingtothestudents’discussion.Getthestudentstoorganizetheirideasintoseveralsentences.Thenshortenthe sentencessotheybecomephrases.Askstudentstowriteaposterwithaneye-catchingheadingaccordingtotheexampleofhowtopresentaposter.MainheadingAimWaystosolvetheproblems:1.…2.…3.…4.… Samplewritingforaposter:FightglobalwarmingCutdownonenergy,cutdownoncarbondioxide1.Walkorrideabike.2.Recycle.3.Planttrees.4.Buyenergy-savingproducts.Showthestudentssomeposters[来源:学科网]StepIII:ListeningLanguagepoints:(Reading)1.Whatdoyouthinkgreenhousegasesdo?本句中think后接了一个由what引导的宾语从句。但应注意的是:特殊宾语从句即当一般疑问句主句的谓语动词是think,believe,suppose,consider,imagine,guess和suggest等时,表疑问的词要放在主句前即句首。[正]Whodoyouthinkwillwininthegame?[误]Doyouthinkwhowillwininthegame?当然一般情况下宾语从句的疑问词应放在主句之后。[误]Whydoyouknowwecan'tcutdownthebigtree?[正]Doyouknowwhywecan'tcutdownthebigtree?2.compareto/withComparedto/withmanywomen,shewasindeedveryfortunate.compareAwithBIfyoucompareherworkwithhis,youwillfindhersismuchbetter.compareAtoBPoetshavecomparedsleeptodeath.3.Thereisnodoubtthat….Thereissomedoubtwhether….主句为肯定句时,doubt后使用连词whether。主句为否定句时,doubt 后则使用连词that。eg:There'snodoubtthatonedayacurewillbefound.Thereislittledoubtthathewasthekiller.4.amountofanamountof相当数量的;一些anyamount(of)任何数量(的);大量(的)beoflittleamount不重要;无价值n.数量largeamountsofmoney大量的金钱eg:Theamountofmoneyshouldbewrittenbothinwordsandinfigures.钱数要用字和数码写出来。5.Withoutthe‘greenhouseeffect’,theearthwouldbeaboutthirty-threedegreesCelsiuscoolerthanitis.如果没有温室效应,地球会比现在冷33℃。这是一个含蓄虚拟条件句。应该注意有时假设的情况并不以条件从句形式表示出来,而是通过一个介词短语或其他方式表示。常用的词或短语有:without,butfor,butthat,otherwise,or,but等。eg:Withoutyourhelp(=Ifwehadnothadyourhelp),wecouldnothavesucceeded.要是没有你的帮助,我们是不会成功的。Butforelectricity(=Iftherewerenoelectricity),therewouldbenomodemindustry.要是没有电,就不会有现代工业。Hewashavingameetingwithhisstudents;otherwise,hewouldhavecome.他当时正与他的学生进行讨论,否则的话他就来帮我们了。Hefeltverytiredyesterday,orhewouldhaveattendedtheparty.他昨天很累,不然他就参加那个聚会了。6.resultin导致,造成=leadtoTheaccidentresultedinthreepeoplebeingkilled.这一事故导致他的死亡。Theaccidentresultedinhisdeath.resultfrom由…产生,发生injuriesresultingfromafall.Theaccident______thedeathoftwopassengers.(B)A.resultedfromB.resultedinC.resultedofD.resultedwith7.ontheotherhand:另一方面ontheonehand,ontheotherhandI'dliketoeatout,butontheotherhandIshouldbetryingtosavemoney.Iwanttogototheparty,butontheotherhandIoughttobestudying.我想去参加聚会,但从另一方面来说,我应该留下来学习。[来源:Zxxk.Com]8.concernn.有厉害关系;所关切的事It’snoconcernofmine.这事与我无关。n.worry,anxiety担心;担忧 Sheshowedgreatconcernaboutyou.她很为你担心。v.tohavetodowithorrelateto涉及;与……有关或相关Attendtowhatconcernsyou.注意与你有关的事物。v.Tobeofinterestorimportanceto(常与with,about,in连用)关心;关照We’reratherconcernedaboutfather’shealth.我们相当担心父亲的健康。9.consequenceinconsequence因此asaconsequence结果asaconsequenceof由于…的结10.rangein/withinrange在射程之内outof/beyondrange在射程之外11.buildupBuildupthebusinessSediment(沉淀物)buildsupontheoceanfloor.Thisbuiltupmyhopeaftertheinterview.12.evenif/thoughIwouldn'ttellyouevenifIknew.Evenifshesurvives,she'llneverfullyrecover.[来源:学科网ZXXK]Eventhoughhe's24now,he'sstilllikealittlechild.Icanstillremember,eventhoughitwassolongago.Languagepoints(Usinglanguage)1.putupwith:忍受,容忍eg.Idon’tknowhowsheputupwithhim.I’mnotgoingtoputupwiththeirsmokinganylonger.2.It’sOKtoleaveanelectricalapplicanceonleave后接宾语和宾语补足语,表示让…保持某种状态或做某事Whydidyouleavetheboycryingoverthere?Thebombblastleft5peopledead.Leavethericetocook5minutes.3.solongas=aslongas只要Wewillgosolongastheweatherisgood.4.electrical用电的;与电有关的electricalequipment电气设备;anelectricalworker电工5.Remember—yourcontributioncounts.count重要;计算总数Everypointinthisgamecounts.(重要)Shebegantocountuphowmanygueststheyhadtoinvite.(计算) 附件1:律师事务所反盗版维权声明附件2:独家资源交换签约学校名录(放大查看)学校名录参见:http://www.zxxk.com/wxt/list.aspx?ClassID=3060

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