2023學(xué)年完整公開(kāi)課版選修6 Unit 4 Global Warming up and reading

Unit4Globalwarming 1.Doyouknowwhat’sthis?Itisa_____________anditismadeof_______.greenhouseglassLead-in1 2.What’sfunctionofit?Canyouexplainhowitworks?Itisusedforgrowing_________,especiallyduring______weather.plantscold Theairinsideis______becausetheglass_____theheatfromthe_____andkeepitfromescaping.Thismakesthegreenhouseheatupandsotheplantscangrowthroughoutthecoldperiod.warmtrapssun3.Iftheearthissurroundedby“greenhousegases”justliketheplantsinthegreenhouse,thenwhatwillhappen?Theconclusion:theearthwillbecomewarmerandwarmer.TheEarthIsBecomingWarmer–ButDoesItmatter?Task1SkimmingSkimthetitle:THEEARTHISBECOMINGWARMER–BUTDOESITMATTER?Whatisthemaintopic?A.Theearth. B.Globalwarming.C.Becomingwarmerdoesn’tmatter.

Skimtheorganizationofthearticle:Afirstparagraphthatrunsacrossthepageandisinbold(粗體)AtitleItisaarticlemostprobably.magazineThemaintextisin2columns(欄),andhas2graphs(圖表)and2quotes(引言).Skimthearticle:3.Whatarethenamesofthethreescientistsmentionedinthearticle?1.Whowrotethearticle?2.Whatisthenameofthemagazine?ListentothetapeLet’scheckit:Whowrotethearticle?Whatisthenameofthemagazine?Whatarethenamesofthe3scientists?SophieArmstrongEarthCareDrJaniceFoster,CharlesKeeling,GeorgeHambley

Task2.ComprehendingStructure1)Howmanyparagraphsdoesthereading

2)Makeadivisionofthetext.Readthepassagequickly(3′)textconsistof?Pleasenumberthem.Part1Part2Part3C.Introductionofglobalwarming.

(1)(2-5)(6-7)B.Howglobalwarmingcomesabout.A.Listdifferentattitudes.★★★The2graphsareusedtoexplainpointsbyproviding.evidenceEvidenceorphenomenon?ScanningReadthe2graphs(圖表):ScanningReadsomethingmoreaboutthe2graphs

:★★★★Tip:Whilereadingagraph,you’dbetterpayattentiontothenumbers.ScanningLet’scheckit:The1st

graphshowstheglobaltbetween1860and.ThetemperatureianddecreasedoverthisperiodbutonthewholeitibyaroundonedegreeFahrenheit.Duringthistime,theearthreacheditsltemperatureinabout1910anditshighestin.Therewasasteadyiinthetemperatureduringthe20yearsafter1980.Wecanseefromthegraphthattheearthhasbecomewsinceearlylastcentury.emperature2000ncreasedncreasedowest2000ncreasearmerScanningLet’scheckit:The2nd

graphshowstheamountofcdintheatmospherefromto1997.TheCO2csteadilyioverthisforty-yearperiod.Itwentupfrom315topartspmillion.arbonioxide1957ontentncreased370erQ1.Whatdothe3scientiststhinkaboutglobalwarming?

Dotheyagreewithoneanother?

Q2:Whataretheeffectsofglobalwarming?

★★★Tip:Youcanknowsomebody’sopinionthroughunderstandinghisquotations

Task3:CarefulreadingDr.JaniceFosterCharlesKeelingGeorgeHambleyDotheyagreewithoneanother?theeffectscouldbeverys______.

Whatdotheythinkaboutglobalwarming?shouldnot________________it.theburningofmoreandmore________________thatisresultinginabig________incarbondioxide.worryabouteriousfossilfuelsincreasewhichscientist’sopiniondoyouagreewith?Listthepositiveornegativeeffectsofglobalwarming.DiscussioncausethesealeveltoriseseverestormsdroughtsfaminesthespreadofdiseasesdisappearanceofspeciesPositiveeffectsNegativeeffectsmakeplantsgrowfastercropswillproducemoreagreaterrangeofanimalsmakelifebetterGeorgeHambleyThinkaboutwhatwe’vejustlearnttoday.TimeforReflectionStudywithoutreflectionisawasteoftime.ThinkinEnglishAftertheclassIt’st