6Allwright, R. 1984. The importance of interaction in classroom language learning [ J ]. Applied Linguistics 5.
7Allwright, D. & K. M. Bailey. 1991. Focus on the Language Classroom [M]. Cambridge: Cambridge University Press.
8Antón, M. 1999. The discourse of a learner-centered classroom: Sociocultural perspectives on teacherlearner interaction in the second-language classroom [J]. The Modern Language Journal 83, iii.
9Brock, C. 1986. The effect of referential questions on ESL classroom discourse [ J ]. TESOL Quarterly20/1.
10Brophy, J. 1981. Teacher praise: A functional analysis [J]. Review of Educational Research 51.