the critical period hypothesis of second language acquisition and school english teaching

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1、TheCriticalPeriodHypothesisofSecondLanguageAcquisitionandSchoolEnglishTeaching　　【Abstract】TheCriticalPeriodHypothesisbelievethattheyoungerthelearneris，thebetterheorshecanmasterthelanguage.BasedontheCriticalPeriodHypothesisandempiricalresearch，theauthorpoi

2、ntsoutthatlearneratdifferentageshavetheirownadvantagetomasterEnglish.Itisuntruetolearnalanguageasearlyaspossible.ThusCriticalPeriodHypothesisisprovedofone-sideview.Theauthorsuggeststhatschoolshouldmakedifferentrightteachingplans，accordingtodifferentadvant

3、agesatdifferentages.Finally，theauthorprovidessomesuggestionsandstrategiesonschoolEnglisheducationinthecontextofChina.　　【Keywords】CriticalPeriodHypothesis；secondlanguageacquisition；schoolEnglishteaching　　1.TheexplanationofCriticalperiodHypothesis　　Thebiolo

4、gistPenfieldandRobertaretheforerunneroftheCriticalPeriodHypothesis.Theystated（1959）：atthecertainageofthelife，onecanacquirealanguageeasilyandquicklywithoutexternalinterruptionandinnoneedofbeingtaught.ThisopinionwasacceptedbyLennebery，whoputforwardtheCritic

5、alPeriodHypothesisinhisbookBiologicalFoundationofLanguage.Hestatedthatlanguagewastheproductofthebrain.Thedevelopmentofthelanguageabilitywascontrolledstrictlybythehumanphysiology.Attheageof2tothepuberty，thatisfrom2yearsto12yearsold，languagecanbeacquirenatu

6、rallyandeffortlesslybecauseofthebrainplasticity.Butafterthepuberty，thebraindevelopsfullyandtheneurologicalsystemlosessuchplasticicy，makingthelanguageacquisitionharderandharder.（Lennebery1967：176）　　1.1ThesupportersofCriticalperiodHypothesisandtheirresearch

7、es　　ManyresearchesweredonetosupportLennebery’sCriticalPeriodHypothesis.Thatis，manylearnersbelievedthatthechildrenwholearnasecondlanguagebeforethepubertyhavemoreadvantagesthanthosewhostarttolearnitafterpuberty.　　Inthelate1960s，AsherandGarciainvestigatedthe

8、pronunciationofCubanimmigratesbetweentheagesof7and19intheUnitedStates，findingonlythosewhowereunder6whentheygottotheUnitedStateshaveamorenear-nativespeechofAmericansthantheothers.In1976，Oyamatook60Italiansimmigrantsb