简介：TheresearchesonCriticalPeriodHypothesis(CPH)aimstoexplaintheimportanceoftheagefactorintheprocessoflearningasecondlanguage.Inthisessay,acriticalreviewofthetheoreticalissuesandempiricalresearchontheCPHwillspreadout.Meanwhile,thediscussionofimplicationandlimitationoftheCPHresearchwillbeconcernedaswell.

简介：TeachingEnglishasacompulsorysubjectinCenderawasihUniversityhasalwaysbeenachallengingone.ThesituationandconditionfacedbythelecturerswhoarefromEnglisheducationprogramarecomplex.TheyhavetoteachEnglishinthefirstyear,sometimesuntilsecondyearfornon-Englishmajorstudentsfromdifferentprograms.Atthesametime,theydealwithbigclassesfromallprograms.Issuesintheteachingandlearningprocessintheclassroommayincludetotalnumberofstudents,students’backgroundknowledgeoflearningEnglish,learningconditions,andteachingandlearningstyle.Sincetheseissueshavehappenedthroughouttheyears,severalelementsfromKrashenhypothesiscanbeconsideredtohelptocreateabetterlanguagelearningenvironment.Thisstudyfocusesonthoseelementsofcomprehensibleinput,reducedanxietylevel,andactiveparticipation.TheseelementscanbeurgentlysuggestedtoEnglishteachingandlearningprocessatuniversitylevel,particularlytoteachEFL(Englishasaforeignlanguage)tomixed-levelnon-Englishmajoruniversitystudentstoproduceaneffectivelanguagelearningenvironment.