3Bachman, L.F. Fundamental Considerations in Language Testing[M].Oxford: Oxford University Press . 1990.
4Bialystok,E. Symbolic Representation and Attentional Control in Pragmatic Competence[A]. In Kasper G & Blum-kulka (ed) 1993. Interlanguage Pramatics[ C]Oxford: Oxford University Press.1994
5Chomsky, N. Aspects of the Theory of Syntax[M]. Cambridge: The MIT Press . 1965.
6Chomsky, N. Essays on Form and Interpretation [ M ]. Amsterdam:North-Holland. 1977.
7Ellis, R. The Study of Secnd Language Acquisition[M]. Oxford: Oxford: University Press. 1994.
8Levinson. Pragmatics[M]. Cambridge: Cambridge University Press.1983.
9Skehan,p. A Cognitive Approach to Language Learning[M]. Oxford: Oxford UniversityPress. 1998.