6Berg, E. C. The effects of trained peer response on ESL students' revision types and writing quality [ J ]. Journal of Second Language Writing, 1999(3) : 215-241.
7Cault, N. Comparing teacher and student responses to written work [J]. TESOL Quarterly, 1994(28) : 181-188.
8Ellis, R. Interpretation tasks for grammar teaching[J]. TESOL Quarterly, 1995(29) : 87-105.
9Hidetoshi, S. and Tomoko, F. Characteristics and user acceptance of peer rating in EFL writing classrooms [ J ]. Language Teaching Research, 2004 ( 8 ) :31-54.