7Berns M.Context of Competence [ M ].New York:Plenum Press,1990.
8Canale M.Swain,M.Theoretical Bases of Communicative Approaches to Second Language Teaching And Testing[ J ].Journal of Applied Linguistics, 1980( 1 ).
9Lado R.Language Taching:Sentifw Aproach[ M ].New York:McGraw-Hill,1964.
