2Long, M and Porter. Group work,InterLanguage Talk, and Second Language Acquisition[J].TESOL QUARTERLY 19:207～208,1985.
3Long M, L Adams, M Mclean, F Castanos. Doing Things with Words: Verbal Interaction in Lockstep and Small Group Classroom Situations [J]. On Tesol' 76. Washington D. C., 1976.
4Skehan P. A Cognitive Approach to Language Learning [M]. OUP.1998.
5HamerJ. The Practice of English Teaching[M]. Longman: Longman Group UK limited, 1991.
6Brown H D. Teaching by Principles[M]. New Jersey: Prentice Hall Regents, 1994.
7Bligh D A, Ebrahim G J, Jacques D, Warrenpiper D. [M] Teaching Students. Exeter University Teaching Services 1975
