alpowerfultooltohelplearnerstoachievegoals,hingduringatime,plexityofeverydaylifeasitreleasesagreatdealofgoal-specificenergytofuelon-taskbehavior.However,therestillremainsalongwaytogo.ThefurtherresearchisneededtofullyunderstandtheinitialconditionsnecessaryforaDMCtobecreatedandtheoptimalstructuralpropertiesoftheemergingsurge.Reference[1]李绍鹏.二语习得动机理论研究新进展[J].当代外语研究,2012(5):43-47[2]夏玲玲.关于动态系统理论与二语习得[J].中学生英语:外语教学与外语研究,2011(9):87-88[3]Dörnyei,Z.,&Ushioda,E.(Eds.).(2009). Motivation,languageidentityandtheL2self. Bristol:MultilingualMatters.[4]Dörnyei,Z.(2012). Motivationinlanguagelearning.Shanghai:ShanghaiForeignLanguageEducationPress[5]Muir,C.,&Dörnyei,Z.(2013).DirectedMotivationalCurrents:Usingvisiontocreateeffectivemotivationalpathways. StudiesinSecondLanguageLearningandTeaching,3(3),357-375.