2Johnson, D.W. & Johnson, R.T. Learning Together and Mone- Cooperative, Competitive, and Individualistic Learning (4th Ed. ) [M]. Boston: Allyn & Bacon. 1994. : P105.
3Henderson, J.G. Reflective teaching: the study of your constructivist practice ( 2nd ed. ) [ M ]. New Jersey : Prentice Hall, Inc., 1996: P68.
4Slavin, R.E. Cooperative learning: Theory, research, and practice (2nd Ed. ) [M]. Boston: Allyn & Bacon. , 1995: P170.
5Long, M. & P. Porter. Group Work, Inter - language Talk and Second Language Acquisition [ J ]. TESOL Quarterly. 1985,19(2) : P207 -227.
6Canale, M. " From communicative competence to communicative language pedagogy" [ A ]. In J. Richards & R. Schmidt (eds). Language and Communication [ C ]. London : Longman, 1983. P5-6.
7Nunan, D. The Learner- Centred Curriculum: A Study in Second Language Teaching [ M ]. Shanghai : Shanghai Foreign Language Education Press, 2001: P121.
