新人教选修6_Unit4_Global_warming[全套课件下载] 2

Unit4GlobalWarmingSavetheearth!Workingroups---listthingsasrequired:1.Thingsthatuseenergyaroundusoratanyotherplaces,(ie.light)2.Sourcesofenergy(ie.coal)Warmingup–I(３m)Thingsthatuseenergyaroundusoratanyotherplaces:InahouseThingsthatuseenergySourcesofenergylightstelevisioncassetteplayercomputerfridgestovewashingmachinehairdryervideorecordercoaloilnaturalgaswind(power)sun(solarenergy)water(hydro-electricpower)thesea(tidalenergy)uranium(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.Geothermal(地热的)EnergyPlant•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.Whatabouttheweather?9℃/14℃Weneed…Pre-reading(3m)Thesun.Howabouttheplants?Iflackofsolarenergy,theplants…GreenhouseGreenhousegases!•Whataregreenhousegases?•What’sgreenhouseeffect?Let’sseethefollowingpictureaboutit.GlobalWarmingReadingReadthepassageagaintofindouttheanswerstothequestionsinEx.1ReadingI–scanning(5m)1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?2.Whatarethenamesofthethreescientistsmentionedinthearticle?→SophieArmstrong,EarthCare.→DrJaniceFoster,CharlesKeeling,GeorgeHambley.→Therearesomeverydifferentattitudesamongscientiststowardsthisissue.Somethinktheeffectswillbeterrible,whilesomeothersbelievethatweshouldnotworryaboutit.3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?→ThefirstgraphshowsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.Thesecondgraphshowsthecarbondioxidecontentintheatmospherefrom1957to1977.→Globalwarming/thewarmingoftheearth4.Whatarethetwographsabout?5.Whatisthemaintopicofthearticle?Readthepassagecarefullyandjudgewhetherthestatementsaretrueorfalse?FTReadingII-skimming(5m)TFTTHowmanypartscanthetextbedividedinto?Tips:Part1(para__)Part2(para___to___)Part3(para___to___)Part4(para___to___)ReadingIII-detailedreading(8m)Choices.1.Whofoundouttheamountofcarbondioxideintheatmospherefrom1957to1977?A.Dr.JaniceFoster.B.CharlesKeeling.C.GeorgeHambley.D.SophieArmstrong.B〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓ReadingIV(3m)2.Buttherearesomeverydifferentattitudesamongscientiststowardsthisissue.“Issueheremeansthesameastheonein________.A.Iboughtthenewstampthedayofitsissue.B.Theyaretalkingaboutoneofthekeyissuesintheelectioncampaign.C.Thegovernmentisexpectedtoissueastatementabouttheelection.D.Themagazinehas12issueseachyear.B〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓3.Theauthorprobablyagreesthat________A.actuallyglobalwarmingisgoodforman.B.weshoulddonothingabouttheglobalwarming.C.catastropheswillhappeniftheglobekeepsonwarming.D.alotremainstobefoundoutabouttheeffectsofglobalwarming.D〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓ThedifferentideasbetweenDr.JaniceFoster&GeorgeHambleyDr.JaniceFosterGeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto__________.Anincreaseoffivedegreeswouldbea____________andcouldbe______________.Morecarbondioxideisa__________thing,whichmakescrops__________andwillen-courage____________________.goupcatastropheVeryseriouspositiveproduceagreaterrangeofanimalsReadingV(4m)SummarySkimoverthepassage,andtellwhatyouhavelearntinclass.Trytotalkingeneraltermsratherthanindetails.eg:Ilearntthattheearthisbecomingwarmer.Ilearntthatglobalwarmingcouldhaveterribleeffectsontheenvironment.….DebateABA:Weshalldosomethingaboutglobalwarming.B:Weshalldonothingaboutglobalwarming.Assignment1.Readthepassageagainandreviewthenewwordsandexpressions.2.Preparethedebateingroups.3.SurftheInternetformoreinformationaboutglobalwarming.Unit4GlobalWarmingSavetheearth!强调句型强调句型，你掌握了吗？一、Itis/was+被强调部分+that+剩余的部分被强调部分是人who/whom/that+剩余的部分注意(被强调部分是:主语，宾语，表语或状语)1.强调句的连接词一般只用that；强调人时，可用who(主语)或whom(宾语).2.强调句的时态一般为“Itwas+…+that”3.强调句的一般疑问句句型：Is/Was+it+所强调的部分+that/who/whom?4.强调句的一般疑问句句型：疑问词+所强调的部分+that/who/whom?1.我是在街上遇见她的父亲的。(强调在街上)2.你是8点开始工作的吗？（强调时间）3.正是因为她病了，他们才没见她做这项工作。4.他为什么不能回答这个问题？ItwasinthestreetthatImetherfather.Wasitateighto’clockthatyoubegantowork?Becauseshewasill,theydidn’taskhertodothejob.→Itwasbecauseshewasillthattheydidn’taskhertodothejob.Whywasitthathecouldn’tanswerthequestion.（强调原因）判断是否是强调句是，可把Itis/was…that去掉，剩余部分在不增减任何词的情况下还是一个完整的句子，那么这种句子是强调句。ItwasinthestreetthatImetherfather.→InthestreetImetherfather.Itwasbecauseshewasillthattheydidn’taskhertodothejob.→Becauseshewasill,theydidn’taskhertodothejob.二、not...until...的强调形式:Itisnotuntil+被强调部分+that...“直到…才…”，主要用于强调时间状语的强调句型。Ididn'trealizeshewasafamousfilmstaruntilshet