3DeKeyser, R. M. 2007. Practice in a Second Language [M]. Cambridge: Cambridge University Press.
4Ellis, R. 1994. Implicit/explicit knowledge and language pedagogy [J]. TESOL Quarterly 28 (1) : 166-172.
5Larsen-Freeman, D. 2006. The emergence of complexity, fluency, and accuracy in the oral and written production of five Chinese learners of English [J].Applied Linguistics 27(4): 590- 619.
6Laufer, B. & J. Hulstijn. 2001. Incidental vocabulary acquisition in a second language: The construct of task-induced involvement [J]. Applied Linguistics 22( 1): 1-26.
7Long, M. H. 1996. The role of the linguistic environment in second language acquisition [A]. In W. C. Ritchie & T. K. Bhatia (eds.). Handbook of Second Language Acquisition [C]. San Diego, CA: Academic Press, 413-468.
8Luria, A. R. 1961, Study of the abnormal child [J]. American Journal of Orthopsychiatry: A Journal of Human Behavior 31 : 1-16.
9Nation, I. S. P. 1990. Teaching and Learning Vocabulary [M]. New York: Newbury House.
10Pickering, M. J. & S. Garrod. 2004. Toward a mechanistic psychology of dialogue [J]. Behavioral and Brain Sciences 27(2) : 169-226.