7Benson, P. & P. Voller. 1997. Autonomy and Independence in Language Learning [M]. London:Longman.
8Brown, H.D. 1987. Principles of Language Learning and Teaching [M]. Englewood Cliffs, JC: Prentice Hall.
9Candy, P. 1991. Self-direction for Lifelong Learning [M]. California: Jossey-Bass.
10Holmes, J.L. & R. Ramos. 1991. Talking about learning: Establishing a framework for discussing and changing learning processes [A]. In C. James & P.Garrett ( eds. ). Language Awareness in the Classroom[C].