2Anton, M & F Dicamilla. 1998. Socio-cognitive functions of L1 collaborative interaction in the L2 classroom [J]. Canadian Modern Language Review, 54: 314-342.
3Atkinson, D. 1987. The mother tongue in the classroom: a neglected discourse [J]. English Language Teaching Journal, 41(4): 241-247.
4Auerbach, E. 1993. Reexamining English only in the ESL classroom [J]. TESOL Quarterly, 27(1): 9-32.
5Bao, J. 1998. Problems of English teaching in secondary school [A]. In K. Parry (ed.). Culture, Literacy and Learning English: Voices from the Chinese Classroom [C]. Heinemann: Boynton/Cook Publishers, 40-144.
6Cohen, A D. 1994. The language used to perform cognitive operations during full-immersion math tasks [J]. Language Testing, 11 (2): 171-195.
7Cook, V. 2001. Using the first language in the classroom [J]. Canadian Modern Language Review, 57:402-423.
8Swain, M & S Lapkin. 2000. Task-based second language learning: The uses of the first language [J]. language Teaching Research, 4: 251-274.
9Tang, J. 2000. An empirical study of the use of the mother tongue in the L2 reading class [J]. Hong Kong Journal of Applied Linguistics, 5 (2): 45-58.
10Turbull, M. 2001. There is a role for the L1 in second and foreign language teaching, but [J] .Canadian Modem Language Review, 57: 531-540.