2Allwright, D. (1984). Why Dan't leamers Learn What Teachers Teach? - The Interaction Hypothesis In Singleton and Little (Eds) [M]. Language Learning in Formal and Informal Contexts (pp 3-18). Dublin, BAAL/ IRAAL.
3Chomsky, N. (1965). Aspects of the Theory of Syntax[M]. Cambridge: MIT Press.
4Ellis, R (1999). Understanding Second Language Acquisition[M]. Shanghai: Shanghai Foreign language Education Press.
5Long, M. & C. Sato (1983). Classroom foreigner talk disourse: forms and funetions of teacher questions In H. W. Seliger & M. H. Long (Eda)[M]. Classroom Oriented Research in Secend Language Acquisition (pp. 268-285). Rowley, MA:Newbury House,.
6Long, M. (1983). Does second Language Instruction Make a Difference? A review of research[M] TESOL. Quarterly 17, 359 - 382.
7Piaget, Jean &. M. Cook. (1952). The Origins of Intelligence in Children [M]. New York: International Universities Press.
8Swain, M. and S. Lapkin. (2000). Task-based second language learning.. The uses of the first language[J]. Language Teaching Research ,4, 251-74.
9Vygotsky L S. (1978). Mind in society: The development of higher psychological processes[M]. Cambridge, MA: Harvard University Press.
