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1、.AgeFactorinSecondLanguageAcquisition二語習得中的年齡因素摘要：本文主要討論了年齡因素與學習第二語言之間的關(guān)系，研究了年齡因素是如何影響二語習得的，以及不同年齡階段的學習者都各自具有哪些優(yōu)勢。關(guān)鍵詞:二語習得；年齡；關(guān)鍵期；優(yōu)勢Abstract:Thispaperdiscussestherelationshipbetweenageandsecondlanguageacquisitionandexploreshowagefactoraffectssecondlanguageacquisition,andwhatadv
2、antagesthelearnersofdifferentagestagewillhave.Keywords:secondlanguageacquisition;age;criticalperiod;advantagesIntroductionAsweallknow,ageisafactorthatwillinfluencetheeffectofalearner’ssecondlanguageacquisition.Children,unlikeadults,haveenoughabilityforlearninglanguagewithgreate
3、asyandminimaleffort.Thisideathatearlyageisamajorfactorinsecondlanguageacquisitionisawidelyheldandpopularbeliefbypeopleallovertheworld,especiallybyChineseparents.Butwhethertheageisthemajorfactorinsecondlanguageacquisition,wewilldiscussitinthispaper....1.ThereasonsWhytheagefactor
4、canaffectssecondlanguageacquisition?Therearetwomainpointshere.1.1ThebrainTheevidenceshowsthatthetwosidesofthebrainaredividedintodifferentfunctionsasitbecomesmature.Thelateralityoftheleftbrainincludesthefunctionsofintelligence,logic,analysiswhiletherightbrain,theemotionsocialfun
5、ction.Humanbeing’sspeechfunctionmainintheleftbrain.ItisclaimedthatthiskindofdevelopmentisaslowprocessanditbeginsatagetwountiladolescencebyEricLennebergat1967.The“brainplasticity”hypothesisisastrikingearlylearninglanguagetheoryadvancedin1959bytheneurophysiologistDr.WilderPenfiel
6、dfromMcGillUniversity.Accordingtothishypothesis,thebrainofachildwasflexibleandadaptable.Ifpartofthebrainwasimpairedthenanotherpartwouldtakeoveritsfunctions.Suchflexibilityinbrainfunctionalitywasnotbelievedtoexistinolderpersons.Therefore,thedevelopmentisoneofthemainpointsthatage
7、factoraffectsthesecondlanguagelearning.1.2ThecriticalperiodCriticalperiodhypothesiscomesfrombiologyanditmeansthataperiodinwhichtheenvironmentbecomesthemostinfluentfactorinindividualdevelopment.Duringthecriticalperiod,theacquisitionofindividualbehaviorbecomeseasyandrapidunderthe
8、appropriateenvironment.TweetLennebergthoughtthereexist
