高二英语选修6第四单元课件

Unit4GlobalWarmingWorkingroups---listthingsasrequired:1.Thingsthatuseenergyaroundusoratanyotherplaces,(ie.light)2.Sourcesofenergy(ie.coal)Warmingup–I(３m)ThingsthatuseenergySourcesofenergylightstelevisioncomputerfridgestovewashingmachinehairdryercoaloilnaturalgaswind(power)sun(solarenergy)water(hydro-electricpower)thesea(tidalenergy)Uranium铀(nuclearenergy)plantwaster(biomassenergy)Windmills,renewable.What?Renewable?Warmingup–II(5m)What?Whatkind?Renewable?Acoalpowerstation,non-renewable.What?Whatkind?Renewable?Anoilrefinery(精炼厂),non-renewable.What?Whatkind?Renewable?Anuclearpowerplant,non-renewable.What?Whatkind?Renewable?Ahydro-electricdam,renewable.•Coal•Oil•Naturalgas•Uranium•Wind(windpower)•Sun(solarenergy)•Water(hydro-electricpower)•Plantwaste(biomassenergy)•Hotspringsorgeysers(geothermalenergy)•Thesea(tidalenergy)FossilfuelsNon-renewableRenewableWhatarefossilfuels?Ancientanimalandplantmaterialbelowthesurfaceoftheearthwithahighcarboncontent,suchascoal,oilandnaturalgas,whichcanbeburnttoproduceenergy.Alsoknownasnon-renewableenergybecauseoncetheyareusedtheyhavegoneforever;theycannotberenewed.Theearthisbecomingwarmer—butdoesitmatter?ReadingReadthepassageagaintofindouttheanswerstothequestionsinEx.1ReadingI–scanning(5m)1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?2.Whatarethenamesofthethreescientistsmentionedinthearticle?SophieArmstrong.EarthCare.DrJaniceFoster,ChrlesKeeling,GeorgeHambley.3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?Therearesomeverydifferentattitudesamongscientiststowardsthisissue.Somethinktheeffectswillbeterrible,whilesomeothersbelievethatweshouldnotworryaboutit.4.Whatarethetwographsabout?5.Whatisthemaintopicofthearticle?ThefirstgraphshowsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.Thesecondgraphshowsthecarbondioxidecontentintheatmospherefrom1957to1997.Globalwarming/thewarmingoftheearth.Readthepassagecarefullyandjudgewhetherthestatementsaretrueorfalse?1.Thetemperatureinthelastcenturydidnotseemtoincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3.JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature.ReadingII-skimming(5m)FTT4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.5.GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtotheearth.6.Itisclearwhattheeffectsofglobalwarmingwillbe.TTF1.Whofoundouttheamountofcarbondioxideintheatmospherefrom1957to1977?A.Dr.JaniceFoster.B.CharlesKeeling.C.GeorgeHambley.D.SophieArmstrong.BReadingIV(3m)2.Theauthorprobablyagreesthat________A.actuallyglobalwarmingisgoodforman.B.weshoulddonothingabouttheglobalwarming.C.catastropheswillhappeniftheglobekeepsonwarming.D.alotremainstobefoundoutabouttheeffectsofglobalwarming.DThedifferentideasbetweenDr.JaniceFoster&GeorgeHambleyDr.JaniceFosterGeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto__________.Anincreaseoffivedegreeswouldbea____________andcouldbe______________.Morecarbondioxideisa__________thing,whichmakescrops__________andwillencourage____________________________.goupcatastropheveryseriouspositiveproducemoreagreaterrangeofanimalsReadingV(4m)SummarySkimoverthepassage,andtellwhatyouhavelearntinclass.Trytotalkingeneraltermsratherthanindetails.eg:Ilearntthattheearthisbecomingwarmer.Ilearntthatglobalwarmingcouldhaveterribleeffectsontheenvironment.….DebateABA:Weshalldosomethingaboutglobalwarming.B:Weshalldonothingaboutglobalwarming.Assignment1.Readthepassageagainandreviewthenewwordsandexpressions.2.Preparethedebateingroups.3.Surftheinternetformoreinformationaboutglobalwarming.1.…itisarapidincreasewhencomparedtoothernaturalchanges.compareAtoBcompareAwithB：把A比作B，一般要有相似之处，显示某人或某物与他人或他物相同。：把A和B进行比较eg:我们常把儿童比作花朵。eg:如果你把这本字典和那本比较一下，你就会发现许多不同之处。Weoftencomparechildrentoflowers.Ifyoucomparethisdictionarywiththatone,you’llfindmanydifferences.LanguagepointsforReadingI2.Sohowhasthiscomeaboutanddoesitmatter?comeabout:发生，造成相当于happeneg:你能告诉我事情是怎么发生的吗？eg:随着电的使用，种种大变化发生了。Canyoutellmehowtheaccidentcameabout？Withtheuseofelectricity,greatchangeshavecomeabout.comeoutcomeup出现；（消息）传开；（观点）公开发生、举行；（在空中）出现3.randomadj&n.Adj.随意的，任意的eg:Theinformationisprocessedinarandomorder.这些信息是随机处理的。n.atrandom随意地eg:我随意点了个人。Icalledoneatradom.4.phenomenonn.现象；奇迹，罕见的人才或事物eg:雨雪是天气现象。Rainandsnowarephenomenaoftheweather.eg:不应该简单地视未婚妈妈为一种社会现象。Unmarriedmothersshouldnotberegardedsimply_____________________.eg:贝多芬是音乐家中的天才。Beethovenwas________________amongmusicians.复数形式pl.phenomenaasasocialphenomenon.aphenomenon5.subscribev.不及物动词，后接to1订阅，订购（报纸等）eg:我今年订了中国日报。IsubscribedtoChinaDailythisyear.2捐赠。3subscribetosth赞成同意sthHesubscribetowhatIsaid.他同意我说的。6.tend1v.后跟to常常会，eg:女人往往比男人长寿。Womentendtolivelongerthanmen.2v.后跟介词eg:近年来物价趋于上升。Thepriceshavetendtowardsoverrecentyears.3vt.照顾，伺候n.tendency倾向偏好adj.tender温柔的辨析：trendn.趋向7.resultin产生，导致(=cause/leadto)主语：in的宾语：eg:努力终归成功。Hardworkresultsinsuccess.resultfrom主语：|from的宾语：起因结果由…引起，产生结果起因Hissicknesswascausedbyeatingtoomuch.=Hissicknessresulted______eatingtoomuch.(in/from)from5.statev.陈述，声明；n.状况，情况；国家；+n.state+that从句