4[1]Feez,S. 1998. Text-based Syllabus Design[M]. Sydney: National Center for English Teaching and Research.
5[2]Long, M & Porter, P.1985. "Groupwork, interlanguage talk and second language acquisition"[A]. TESOL Quarterly, 19(2): 207-18.
6[3]Long, M. & Crookes, G. 1991. "Three approaches to task-based syllabus design"[J]. TESOL Quarterly 26:27-55.
7[4]Nunan, D. 1991. "Communicative tasks and the language curriculum" [J]. TESOL Quarterly, 25 (2): 279-93.
8[5]Pica T., Kanagy, R. & Falodun, J.1993. "Choosing and using communicative tasks for second language instruction" [A]. In Crookes ,G. &Gass (Eds.). Tasks and Language Learning: Integrating Theory and Practice [C]. Clevedon: Multilingual Mastters.
9[6]Skehan, P. 1996. "A framework for the implementation of task-based instruction"[J]. Applied Linguistics, 17 (1): 39-59.
10[7]Swain, M. 1985. Communicative Competence: Some Roles of Comprehensible Input and Comprehensible Output in Its Development [M]. Newbur House.
