现代大学英语精读UnitSilentSpringppt课件.ppt

现代大学英语精读UnitSilentSpringppt课件.ppt

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,SilentSpringRachelCarson,SilentSpring,Unit5,Questions/Activities,Check-onPreview,Objectives,Warmingup,SilentSpring,Unit5,Workinpairstonameenvironmentalproblemsthatarethreateningourworld.,sandstorm,desertification,soilerosion水土流失,Deforestation采伐森林,Salinization盐化（作用）,seaturtle,polarbear,农药：

farmchemical,Siamesetwins,EnvironmentalProblems,Air-relatedenvironmentalproblemsGreenhouseeffectOzonedepletionAirpollutionwater-relatedenvironmentalproblemsAcidrainWastewaterWatercrisisMarinepollutionandacidification海洋污染和海水酸化,Land-relatedenvironmentalproblemsProblemsarisingfrominefficientlanduse（urbansprawl城区的无计划扩张,habitatfragmentation栖息地破碎化,habitatdestruction）Problemsarisingfromlandpollutionanddegradation（desertification,landpollution,soilpollution）OtherenvironmentalproblemsTheuseofpesticidesInefficientuseofresourcesandenergycrisisConservation（species）Non-recyclablewaste（plasticandelectronicwaste）Geneticengineering（geneticallymodifiedfoods）NucleardevelopmentandnanotechnologyPopulationexplosion,Check-onPreview,Wearefacedwithallkindsofenvironmentalproblemsnowadays.ButwhatistheonethatRachelCarsondealtwithinherbookSilentSpring?

InwhatwayisRachelCarsonunparalleled?

DoesCarsonmeanthatinsecticidesshouldneverbeusedinagriculture?

Howdoyouseetheenvironmentalproblemsinyourcity?

Howshouldourgovernmentdo?

andhowshouldwecitizensofthiscitydo?

Warmingup,1.ContentDevelopanenvironmentalconsciousness2.Language:

（newwordsandexpressions）Practicereadingskills.understandingextendedessaysunderstandingcomplicatedparagraphsreadingforgistinferringtheauthorsattitudes/feelings/opinions/conclusionsdrawinginferences,Objectives,Warmingup,Background,Author,SilentSpring,Unit5,Author,RachelCarson,writer,scientist,andecologist,wasborninPennsylvania.ShestudiedbiologyandreceivedherMAinzoologyfromJohnHopkinsUniversity.Shewrotemanybooksaboutconservation,naturalresources,andthewonderandbeautyofthelivingworld.Shediedin1964afteralongbattleagainstbreastcancer.,RachelCarson（1907-1964）,Shehadanintenselovefornaturesinceherchildhood:

“Humanshavenowacquiredafatefulpowertoalterandtodestroynature.ButManisapartofnature,andhiswaragainstnatureisinevitablyawaragainsthimself.”RachelCarson,Author,Background,Publications:

UndertheSea-Wind海风下TheSeaAroundUs周遭之海TheEdgeoftheSea在海之滨SilentSpring寂静的春天,Shewasoncebitterlyattacked:

“ananti-humanitariancrank,apriestessofnature,andahystericalwoman”Butshecourageouslywentonfightinguntilherideacaughtonandmoreandmorepeoplejoinedin.themotherofmodernenvironmentalmovement,Author,Background,1.Howwasitreceived?

2.Howsignificantisitnow?

3.Doesitstillmakesensenow?

Author,Background,Aboutthebook,Whenthebookfirstappeared,Carsonwasbitterlyattackedbythechemicalindustryandsomepeopleinthegovernmentasanalarmist,butshecourageouslyspokeoutagainstthosecriticism.thethreatsshehadoutlinedthecontaminationofthefoodchain,cancer,geneticdamage,thedeathsofentirespeciesweretoofrighteningtoignore.Forthefirsttime,theneedtoregulateindustryinordertoprotecttheenvironmentbecamewidelyaccepted,andenvironmentalismwasborn.,TextAnalysis,SilentSpring,Unit5,I.StructureoftheText,PartI:

paras.1-6atownbefore&afterthedisasterPartII:

paras.7-9causeofthedisaster:

chemicalsPartIII:

paras.10-14character&impactofmanstamperingwithnaturePartIV:

paras.15-18reasonswhypesticidesfailtosolvethepestproblemPartV:

paras.19-24causeofmodernpestproblemandpossiblesolutionsPartVI:

para.25,Partone（1-6）:

Discussion,Howdidthetownlooklikebeforeandafteritwaspolluted?

Inparagraph3,itmentionedthatsomeevilspellsettledonthecommunity,whichmadethelivesinthiscityloseitsvigor.Isitthetruth?

Ifnot,whatmadeit?

1.TherewasonceatownintheheartofAmericawherealllifeseemedtoliveinharmonywithitssurroundings.（-1）heart:

thecentralormostimportantpartinharmonywith:

inastateofpeacefulco-existenceandagreementParaphrase:

OnceuponatimetherewasatowninthecentralpartofAmericawherealllivingthingsseemedtoco-existpeacefullywiththeirenvironment.,II.DetailedDiscussionoftheText,E.g:

racialharmonydomesticharmonyEveryonelivesinharmonywitheachother.Tourismshoulddevelopinharmonywithenvironment.Wearelivinginaharmonioussociety.,harmony:

nharmoniousadjliveinharmonywith与和谐相处,22,2.Thetownlayinthemidstofprosperousfarms,where,inspring,whitecloudsofbloomdriftedabovethegreenfields.（-1）Inthemidstof:

a.在当中（表方位）b.正当某事发生的时候（表时间）whitecloudsofbloom:

flowersarelikewhitecloudsprosperous:

booming;promising;（ofplants）growingwellprosper（V）prosperity（n）Thetownlayamongbooming（orwellgrowing）farms.Inspring,flowersfloatedabovethegreenfieldsjustlikeclouds.,3.Inautumn,oakandmapleandbirchsetupablazeofcolorthatflamedandflickeredacrossabackgroundof.,setup:

tocause,produce,raise:

awallablazeofcolor:

animpressiveandnoticeableshowofcolors色彩斑斓Para:

Inautumn,theoak,mapleandbirchtreesturnedyellow,redorbrown,thusmakingabeautifulshowofcolorsagainstthedarkgreenofpinetrees.PayattentiontoCarsonsuseofcolorindescribingthetownbeforeitsenvironmentwascontaminated:

whitecloudsofflowersfloatingabovegreenfieldsinspring,theblazeofcolorinautumn,etc.,Lesson11SilentSpring,flickerv./n.a.tomovewaveringly=twinkle;blink;limmerb.（ofanidea,thought,emotion）tobeexpressedorappearsomewhereforashorttimee.g:

shadowsflickeringonthewallleavesflickeringinthewindThecandleflickeredinthewind.Asmileflickeredacrosshisface.flame:

tobecomesuddenlybrightwithlightorcolor,espredororangeTheautumnwoodsflamedwithcolor.,4.Thenfoxesbarkedinthehillsanddeersilentlycrossedthefields.（-1）,（Nowanimalsareintroducedafterplantlife）fromthenoisyfoxestothequietdeer,theycriedandmovedastheyliked.Alllifeseemedtoliveinharmonywithitssurroundings.,5.Thecountrysidewas,infact,famousfortheabundanceandvariety,abundance:

nalargequantityofsthChinahasanabundanceofnaturalresource.Inabundance大量，充足AbundantadjThisareaisabundantinpetroleumdeposit.aboundVThestreamaboundswithfish.Migrant:

n

（1）候鸟，迁徙动物

（2）移民，移居者Immigrants/migrate/migration,6.Thensomeevilspellsettledonthecommunity:

mysteriousdiseasesswepttheflocksofchickens;thecattleandsheepsickenedanddied.,-Then,asifbysomeevilpower,disasterfellonthecommunity:

Strangediseasesquicklystruckdownlargenumbersofchicken;thecattleandsheepbecameillanddied.Spell:

wordsthatmakemagicalthingshappenNotetheuseofunitwordsinEnglish:

aflockofchicken/sheep/tourists;aherdofcattle/elephants,7.Thefeedingstationsinthebackyardsweredeserted.（-4）,feedingstation:

adish-likecontainerfixedontopofapostwherepeopleregularlyleavesunflowerseedsorthelikeforpassingbirdstofeedon.Feedingstationsaregenerallyputupinthebackyards.-Nobirdscametofeedonwhatwasthereatthefeedingstations.Deserted:

forsaken;visitedbynobody（herebirds）Astreet/island,8.Onthemorningsthathadoncethrobbedwiththedawnchorusofscoresofbirdvoicestherewasnownosound;（-4）,-Themorningairusedtovibratewiththesingingofbirds,buttherewasnownosound.scoresofbird:

manybirdsThrob:

v

（1）（ofapartofthebody）tofeelaseriesofregularpainfulmovements抽动，抽筋；

（2）tobeatorsoundwithastrong,regularrhythm跳动，搏动；（3）（ofaplace）tohavealotoflife,energy地方充满了活力Ourcampusisthrobbingwithlife.,Contrast:

atownbefore&afterthedisaster,BeforeColor:

ablazeofcolorSound:

bark,birdssingingMotion:

vibrant,throbbingwithlifeOverallimpression:

vibrant,harmoniousbeautiful,AfterColor:

brownedandwitheredvegetationSound:

still,quiteMotion:

lifelessOverallimpression:

lifelessdeserted,awful,TextAnalysis,DetailedAnalysis,Whydidtheauthorpaintsuchabeautifulpictureofanon-existenttown?

Whatwasshetryingtoappealto?

TextAnalysis,DetailedAnalysis,PartII:

Discussion（7-9）,NatureDirection:

environmentlifeSpeed:

adaptative,HumanDirection:

lifeenvironmentSpeed:

destructiveirrecoverable,Howhasmanchangedtherelationbetweenorganismsandtheirsurroundings?

TextAnalysis,DetailedAnalysis,PartIII:

Discussion（10-14）,2.Inwhatwayhasmanspowerchangedincharacter？

（para.11）3.Howdochemicalsaffectourlife?

（para.11）“passingfromonetoanotherinachainofpoisoninganddeath”4.Whatarethetwoexamplesgivenbytheauthorasmanstamperingwithnature?

（paras.11-13）5.Whyismanschangeoftheworldparticularlydevastating?

（paras.12-14）,PartIII:

Discussion,TextAnalysis,DetailedAnalysis,9.Toalargeextent,thephysicalformandthehabitsofbeenmoldedbytheenvironment（-10）.,Toalargeextent：

在很大程度上Tosomeextent/degree;toacertainextent/degreeMold:

vtostronglyinfluencethewaysbscharacter,attitudeandetc对影响重大，塑造成Parentsareresponsibleformoldingchildrensphysicalandpsychologicalhealth.,10.Consideringthewholespanofearthlytime,theoppositeeffect,inwhichlifeactuallymodifiesitssurroundings,hasbeenrelativelyslight.（-10）,-Whenwethinkofthelonghistoryoflifeonearth,thedegree（orextent）thatlivingthingsaffecttheirenvironmenthasbeeninsignificantascomparedwiththeeffectoftheenvironmentonplantandanimallife.,11.butithaschangedincharacter.（-11）,butthenatureofthispowertoaltertheenvironmenthaschanged.Inthepast,tosurvivehumansmadeuseofwhatnatureoffered,forexample,bycuttingdowntrees,dammingrivers;nowtheycreatethingsthatdidnotexist,suchaschemicalsandunnaturalradiation.,Assault:

v./ntheactofattackingsomeplaceinordertoc