4Chastain,K.1975.Affective and ability factors in second language acquisition.Language Learning 25.
5Kleinmann,H.1977.Avoidance behavior in adult second language acquisition.Language Learning 27.
6Aida,Y.1994.Examination of Horwitz,Horwitz,and Cope's construct of foreign language anxiety:the case of students of Japanese.The Modern Language Journal 78.
7Krashen,S.D.1981.Second Language Acquisition and Second Language Learning.Oxford:Pergamon Press.
8Krashen,S.D.1982.Principles and Practice in Second Language Acquisition.New York:Pergamon press.
9Horwitz,E.K.,Horwitz,M.& Cope,J.1986.Foreign language classroom anxiety.The Modern Language Journal 70.
3Arnold J. Affect in language learning [M]. Cambridge: Cambridge University Press, 2000: 58-67.
4Horwitz, E. K. Horwitz, M. B. & Cope. J. A. Foreign language classroom anxiety [j]. The Modern Language Journal, 1986,70:. 125-132.
5Krashen, S. Principles and practice in second language Acquisition [M]. Oxford: Pergamon, 1982.
6Young, D. Creating a low anxiety classroom environment: What does language anxiety research suggest? [J]. The Modern Language Journal, 1991(75): 283-94.
