1AUright.D.The importance of interacfon in classroom language learning[J ].Applied Linguistics, 1984, (5) : 23.
2Carroll, Irrelevance of Negative Feedback[A].ln Eu-bank,L. Selinker,L MSS (Ed.)The Current Status of Interlanguage [C].Ams-- terdam:John Benjiamins, 1995.
3Long,M.H.The Role of the Linguistic Environment in Sec- ond Language Acquisition [A].In W.C.Ritchie & T.K.Rhatia(Eds). Handbook of Second Language Acquisition[ C ]. San Diego : Academic Press, 1996.
4Sandra, L. M. Researching Second Language Classroom[ M ]. Newjersy: Lawrence Eribaum Associates, 2006.
5Lonsman Dictionary of Language Teaching & Applied Lin-guistics[M].外语教育与研究出版社,2003.