现代大学英语精读第二版book3unit5

SilentSpringRachelCarsonCheck-onPreview1.Wearefacedwithallkindsofenvironmentalproblemsnowadays.ButwhatistheonethatRachelCarsondealtwithinherbookSilentSpring?2.Howdochemicalsaffecttheenvironmentandpeople?3.DoesCarsonmeanthatinsecticidesshouldneverbeusedinagriculture?Warmingup1.Content&Message:•Developanenvironmentalconsciousness(liveandletlive).2.Language:•Practicereadingskills.–understandingextendedessays(acombinationofdescription,expositionandargumentation)–understandingcomplicatedparagraphs–readingforgist–inferringtheauthor’sattitudes/feelings/opinions/conclusions(herloveforthebeautyandintegrityofnature;herviewofman’srelationtonature)–drawinginferencesObjectivesWarmingup2.Language:•Appreciatedescriptivewriting(useofsensorywordstopaintpictures).•Appreciatedevicestomakewritingpreciseandpowerful.•Learnhowtouse“so”and“such.”ObjectivesWarmingupBackgroundAuthorSilentSpringUnit5RachelCarson(1907-1964)biologist,writer,ecologistintenselovefornaturesinceherchildhood→“Humanshavenowacquiredafatefulpowertoalterandtodestroynature.ButManisapartofnature,andhiswaragainstnatureisinevitablyawaragainsthimself.”―RachelCarsonAuthorBackgroundHerLifeShewasoncebitterlyattacked:“ananti-humanitariancrank,apriestessofnature,andahystericalwoman”Butshecourageouslywentonfightinguntilherideacaughtonandmoreandmorepeoplejoinedin.→themotherofmodernenvironmentalmovementAuthorBackgroundHerLife1.Whenwasitpublished?2.Whowastheauthor?3.Whatisitabout?Whatisitscentralargument?4.Howwasitreceived?5.Howsignificantisitnow?6.Doesitstillmakesensenow?AuthorBackgroundDetailedAnalysisStructureTextAnalysisSilentSpringUnit5ThemeQuestionsforthinking:1.WhatcanyouinferaboutCarson’sviewoftherelationbetweenmanandnature?2.Washerviewcommoninhertime?3.Howdoyouarriveatthisinference?ThemeTextAnalysisPartI:paras.1-6atownbefore&afterthedisasterPartII:paras.7-9causeofthedisaster:chemicalsPartIII:paras.10-14character&impactofman’stamperingwithnaturePartIV:paras.15-18reasonswhypesticidesfailtosolvethepestproblemTextAnalysisStructurePartV:paras.19-24causeofmodernpestproblemandpossiblesolutionsPartVI:para.25conclusionLogic&Technique•What:frominteresttoconcern•How:fromgeneraltospecificfromnaturetoman•Why:fromeffecttocause•How:fromcausetosolutionTextAnalysisStructure•description•exposition•argumentation•exposition&argumentationQuestionsforthinking:1.WhydidCarsondevoteawholeparagraphtodescribethespreadingofspeciesinnaturebeforeshementionedman’sroleintheprocess?2.Didshealwaysfirstdescribethemechanismsinnaturebeforetalkingaboutman’stamperingwithnature?3.Whydidshepresentherideasinthisway?What’sherhiddenargument?TextAnalysisStructureUnit5–SilentSpringI.TextAnalysisQuestion:WhydidCarsoncallman’stamperingwithnatureawaragainstnature?Awarinvolvesthekillingofhundredsofthousandsofpeople—the“badpeopleorgoodpeople”—withtheirinventedweapons.Insects,birds,plants,fish,even“pests”areallpartofnature.Bycreatingandusingchemical“weapons”,mankilledeveryinsectthe”good”or“bad”,stilledthesongofbirdsandtheleapingoffish,coatedtheleaveswithadeadlyfilm,andruinedthesoil.Thewholeecologyofnaturewasupset.Tobecontinuedonthenextpage.Unit5–SilentSpringI.TextAnalysisForReferenceQuestion:WhydidCarsonsaythechemicalwarisneverwon?Chemicalskillindiscriminately,reducebiodiversityandcontaminatetheentireenvironment.Theycannotsolvethepestproblem,forpestscanadapttothechemicalsandevolveintosuperracesimmunetochemicals,andtheycanundergoa“flare-back”.Theviciouscirclewillneverenduntilmaniskilledalongwithotherlives.Tobecontinuedonthenextpage.Unit5–SilentSpringI.TextAnalysisQuestion:InCarson’sopinion,whatledtotheinsectproblem?Naturehadbuilt-inchecksandbalancestoholdthevarietiesofspecieswithinbounds.Man’stamperingwithnaturedisturbedthebalances.Insectproblemsarosewiththeintensificationofagriculture—thedevotionofimmenseacreagetoasinglecropandthespreadingofthousandsofdifferentkindsoforganismsfromtheirnativehomes.Tobecontinuedonthenextpage.Unit5–SilentSpringI.TextAnalysisQuestion:Whatisthedifferencebetweenthenaturalspreadingofspeciesandtheman-assistedprocess?Andhowdoesthisprocesscontributetothepestproblem?Thenaturalspreadingofthespeciesinvolvestherestraininghandofnaturalenemiesthatkeepdownitsnumbersinitsnativeland.Analienspeciesisintroducedbymanintoanewterritoryfindsnonaturalenemies,thusbecomingenormouslyabundantinnumber.Tobecontinuedonthenextpage.Unit5–SilentSpringI.TextAnalysisQuestion:Whatshouldwedotosolvepestproblems?Weshouldtrytohavethebasicknowledgeofanimalpopulationandtheirrelationstotheirsurroundingstopromoteanevenbalance,controlthepowerofoutbreaksofinsectsandreducenewinvasionsratherthanseekingnewtechnologytosuppressthisplantorthatanimal.Tobecontinuedonthenextpage.Unit5–SilentSpringI.TextAnalysisQuestion:WhatisCarson’scontention?Natureisanintegralnature.Weshouldpromoteourknowledgeofrelationofchemicalsandecology.Beforeweusechemicals,weshouldknowclearlyabouttheireffectonenvironmentandpeopleandmakereasonableuseofthem.Tobecontinuedonthenextpage.Contrast:atownbefore&afterthedisasterBefore•Color•Sound•Motion•Overallimpression:vibra