5Arnold J.A Map of the Terrain[A].In Affect in Language Learning[C].Beijing:Foreign Language Teaching and Research Press,2000.
6Krashen S D.The Input Hypothesis:Issues and Implications[M].London:Longnan,1985.
7Horwitz E K,Horwitz M B,Cope J A.Foreign Language Classroom Anxiety[J].The Modern Language Journal,1986,70(2):125-132.
8Kleinmann H.Avoidance Behavior in Adult Second Language Acquisition[J].Language learning,1977,27:93-107.
9Baron, R M , & Kenny , D A. The moderator - mediator variable distinction in social psychological research: Conceptual, Strategic, and statistical considerations. Journal of Personality and Social Psychology, 1986, 51 : 1173 - 1182.
10Bandura A. Self- Efficacy toward a unifying theory of behavioral change. Psychological Review, 1977, 84(3) : 191 - 215.