6Chen X. The Role of Chinese EFL Learners' Text-based Interest in L2 Writing [ D ].广州:广东外语外贸大学,2012.
7Dobao A F. Collaborative dialogue in learner- learner and learner-native speaker interaction [J]. Applied Linguistics, 2012, 33 (3): 229- 256.
8Mandell P B. On the reliability of grammaticality judgement tests in second language acquisition research [ J ]. Second Language Research, 1999, (1) : 73-99.
9Oller J W Jr. Language Tests at School [M ]. London: Longman, 1979.
10Swain M & Lapkin S. Interaction and secondlanguage learning: Two adolescent French im- mersion students working together [ J ]. The Modern Language Journal, 1998, ( 3 ) : 320 - 327.
