2Deutch,M.Education and Distribution Justice:Some Reflection on Grading Systems[M].American Psychologist,1979.
3Freeman,D.Language Teacher Education,Emerging Discourse,and Change in Classroom Practice.In J.Flowedew,M.Brock,and S.Hsia.(eds.),Perspective on Second Language Teacher Development[M].Hong Kong:City Polytechnic of Hong Kong,1999.
4Johnson,D.W.Group Processes:Influences on Student-Student Interaction on School Outcomes[M]Social Psychology of School Learning,New York.Academic Press,1980.
5Long,M.,&P.Porter.Group-work,Inter-language Talk,and Second Language Acquisition[J].TESOL Quarterly,1985.
6Piaget,Jean and Inhelder B.The Psychology of the Child[M].New York:Basic Books,1969.
7Richards.Jack C.Reflective Teaching in Second Language Classroom[M].Cambridge University Press,2004.
