高三英语 Unit22《Lesson1》课件 北师大版选修

Lesson1GlobalWarming,Appreciationofafilmtrailer,Wordspreview,consensusbeyondclaimrelevantraybouncepin,n.一致的意见prep.超出vt.声称adj.有关的n.光线vi.反弹vt.固定,agriculturecoincidencecondemndroughtfederalreservationsacrifice,Wordspreview,n.农业n.巧合vt.宣判死刑,注定毁灭n.旱灾adj.联邦的n.保留,存疑vt.,vi.牺牲,献出,advocaterecyclesubstitutethreatenpancakehurricane,Wordspreview,vt.主张,提倡vt.回收利用n.代替品,代用品vt.威胁n.薄煎饼n.飓风,Expressionspreview,beyondonescontrollookaheadrefertointurnleadtotakeactionaheadof,超出的控制，不受的控制展望未来指,意即依次引起,导致采取行动在前面,Lookatthepicturesandwhatdoyouknowaboutglobalwarming.,ThegreenhouseeffectistheriseintemperaturethattheEarthexperiencesbecausecertaingasesintheatmosphere(watervapor,carbondioxide,nitrousoxide,andmethane,forexample)trapenergyfromthesun.Withoutthesegases,heatwouldescapebackintospaceandEarthsaveragetemperaturewouldbeabout60Fcolder.Becauseofhowtheywarmourworld,thesegasesarereferredtoasgreenhousegases.,TheGreenhouseEffect,TheGreenhouseEffect,Withoutthisgreenhouseheating,theEarthsaveragetemperaturewouldbeonlyabout-73C(-100F);eventheoceanswouldbefrozenundersuchconditions,suchastheMoonandtheMars.,Mars,Moon,WhatAreGreenhouseGases?,Somegreenhousegasesoccurnaturallyintheatmosphere,whileothersresultfromhumanactivities.Naturallyoccurringgreenhousegasesincludewatervapor,carbondioxide,methane,nitrousoxide,andozone.Certainhumanactivities,however,addtothelevelsofmostofthesenaturallyoccurringgases.,Owingtotheriseinatmosphericcarbondioxidecausedbymodernindustrialsocietieswidespreadcombustionoffossilfuels(coal,oil,andnaturalgas),thegreenhouseeffectonEarthmaybeintensifiedandlong-termclimaticchangesmayresult.,ReadingBeforeyoustart,Whichcountriesdoyouthinkcontributemoretoglobalwarning?a)developedcountriesb)developingcountriesmoreindustryandtechnology,Whateffectwillglobalwarminghaveontheseaandthelivingthingsinthesea?,Whatwillhappenwithglobalwarming?,WillglobalwarmingaffectthelifeofNorthPolarBear?,Whatwillhappentopenguinsbecauseofglobalwarming?,Readthetextandanswerthesequestions.1)Whatisglobalwarming?GlobalwarmingreferstoanaverageincreaseintheEarthstemperaturethat,inturn,leadstoclimatechange.2)Whathumanactivitiesarecausingglobalwarming?Industry,agriculture,thecuttingdownofforests,theincreaseintransportandtheburningoffuelsarecausingglobalwarming.,3)Byhowmuchhastheglobalaveragetemperatureincreasedinthelast100years?By1F(OnedegreeFahrenheit)4)AregreenhousegasesnecessaryforlifeonEarth?Yes,theyare.BecausetheytrapheatfromthesunintheEarthsatmosphere.OtherwisetheEarthwouldbecoldandunsuitableforlife.,5)Howcanwehelpsolvetheproblemofglobalwarming?Wecanmakesmallchangesliketakingpublictransport,recycling,usinglow-flowshowerheads,buyinglightbulbsthatuselessenergy,usingrecycledpaperandswitchingoffthelightswhenweleavearoom.,6)Whatarethewould-beconsequencesofglobalwarming?Itwillcausemorefrequentflooding,heatwavesanddroughts.Andseriousdiseaseswillspreadandindustriesthatrelyonnaturesuchasfishingwillbebadlyaffected.Itwillcausethepolaricetomelt,raisingsealevels,andfloodingmanyislandsandcities.,Whatwillyoudoeverydaytohelpreducegreenhousegases?,Insomecases,itonlytakesalittlechangeinlifestyleandbehaviortomakesomebigchangesingreenhousegasreductions.Forothertypesofactions,thechangesaremoresignificant.Whenthatactionismultipliedbythe1.3billionpeopleinChinaorthe6billionpeopleworldwide,thesavingsaresignificant.,Takingpublictransportlikebusescanreducegreenhousegasemissions.,Andtakingtraincanalsohelpareductionofgreenhousegas.,Therecyclingsymbol,Buytherecycledproducts,Recycledproducts,Recyclingthebottles,Paperrecycling,yourpapercouldbecomepartofaroadorrace-track,usinglow-flowshowerheads,buyingenergy-efficientlightbulbs,replace,with,Languagepoints,1.ScientistshavereportedthathumanbeingsarecausingchangesintheEarthsclimate-something_seenas_.,previously,beyondourcontrol,beyond在那边/超出的范围,Thisbookonliteratureisbeyondourreach.Thisbicycleisbeyondrepair.,2.TheyclaimthatgasespumpedintotheEarthsatmospherebythefactoriesandvehicleshavebeenspeedinguptheprocessofglobalwarmingandaffectingourclimate.Whatisthefunctionoftheunderlinedpart“pumpedvehicles”?,Itisusedasattributive(定语).speedup反义:slowdownaffecthaveabadeffectonsth.,3.Globalwarming_anaverageincreaseintheEarthstemperaturethat,inturn,_climatechange.,refersto,leadsto,1)referto提到,谈到,Dontworry.Idontthinkthemanagerreferredtoyou.Promisemenottorefertothematteragain.,2)leadto,(1)通向,Thisroadleadstothelibrary.,(2)leadto=resultin=bringaboutThefightledtotheirdivorce.,4.increaseby增加了increaseto增加到Thetemperatureoftheroomisincreasedby12C,thatis,thetemperatureoftheroomisincreasedto29C.Cf:reduceby/reducetoriseby/riseto,5.insist:(1)urgeinaforciblemanner坚决主张,坚决要求e.g.HeinsistedI(should)gowiththem.=Heinsistedonmygoingwiththem.,6.release:,(1)allowtogo;setfree释放Whencoalisburning,itwillreleasealotofcarbondioxideintotheatmosphere.,(2)allow(news/films)tobeknownorpublished发布,发行Thenewshasbeenreleased.,7.quantity:,(1)thepropertyofthingswhichcanbemeasured,e.g.size,weight,number.物质的属性,量e.g.Ipreferqualitytoquantity.,(2)amount,sumornumber数量e.g.Wevehadquantitiesofrainthissummer.今年夏天雨下得很多。Hebuysthingsinquantity/inlargequantities.他总是大宗采购东西。,8.pinsth.onsomebody把某事归罪于某人,汤姆是无辜的,他们只是想把责任推给他。,Tomisinnocent.Theyjusttriedtopintheblameonhim.,9.addup加起来totalup/addupto=totalupto加起来为Headdedupthenumbersandthenumbersaddedupto233.,Translation,Hishonestyisbeyondquestion.,他的忠诚是毋庸置疑的。,食用过多的糖会引起健康问题。,Eatingtoomuchsugarcanleadtohealthproblems.,我们坚决要求全额退款。,Weinsistedonarefundofthefullamount.,Grammar,1.HumanbeingsarecausingchangesintheEarthsclimate.toreportthat,Ex6:Whatverbsareusedinthetexttoreportthesestatements?,2.GasespumpedintotheEarthsatmospherehavebeenspeedinguptheprocessofglobalwarming.toclaimthat3.Globalwarmingcouldbeoneofthebiggestenvironmentalproblemsfacingthe21stcentury.tobelievethat,4.Globalwarmingismostlyduetohumanactivities.toinsistthat5.Globalwarmingwillcauseterribleclimatechangesincludingmorefrequentfloods,heatwaves,anddroughts.towarnthat,Ex7:Lookatthesesentencesfromthetextandexplainwhytheunderlinedverbsarenotofthesametenseasthereportingverbs.,Recentreportswarnedthatglobalwarmingwillcauseterribleclimatechanges.,2.ScientistsfoundthatthetemperatureoftheEarthiscontrolledbygreenhousegases.,Answers:1)becauseitisinthefuture2)becauseitisageneraltruth,Ex8.Matchthesentenceswithappropriatereportingverbsfromthelist.Thenwritethereportedsentences.,admit/report/forbid/ask/invite/order/suggest/threaten,Wellclosecreditlinesifyoudontreducetheamountofcarbondioxideyouproduce.,2.OK,youreright,somepoisonouschemicalsdidescapeintotheatmosphere.3.Whydontyoudropintonightaheadofyourmeeting?4.Standupimmediately!5.Youcantusethedictionariesduringthetest.,6.Shallwehavepancakeswithhoney?7.Isthebusservicerunningaccordingtothetimetabletoday?8.Thefirehasluckilycausednolossoflife.,1.Theythreatenedtocloseourcreditlinesifwedontreducetheamountofcarbondioxideweproduce.2.Theyadmittedthatsomepoisonouschemicalshadescapedintotheatmosphere.,Theanswers,3.He/She/Theyinvitedmetodropintonightaheadofmymeeting.4.He/She/Theyorderedmetostandupimmediately.5.He/She/Theyforbadeustouseourdictionariesduringthetest.,6.She/He/Theysuggestedhavingpancakeswithhoney.7.I/He/She/They/Weaskedifthebusservicerunningaccordingtothetimetabletoday.8.Hereportedthatthefirehadluckilycausednolossoflife.,Ex9.Usethefollowingverbstoreportthetwodialogues.,a)TomadvisedJohnnottoplaythegametoday.JohnadmittedthatTomwasrightbecausehewasstillalittlebitill.Hepromisednottoworktoohard.TomwarnedJohntobecarefulbecauseifheranaroundtoomuchinthisweathe