8Brown H D. Principles of Language Learning and Teaching[M]. New Jersey: Prentice Hall Regents, 1994.
9Schmidt R. The role of consciousness in second language learning[ J]. Applied Linguistics, 1990, ( 11 ) :129 - 158.
10Tomasello M & Herron C. Down the garden path: Inducing and correcting overgeneralization errors in the foreign language classroom [J]. Applied Psycholinguistics, 1988, (9):237 -246.
