5[1]Arnol, J. Affect in Language Learning [M]. Cambridge: Cambridge University Press, 1999.
6[2]Horwitz, E., Horwitz, M. & Cope, J. Foreign language classroom anxiety [A]. In E. Horwitz & D. Young(Eds).LanguageAnxiety: From theory and research to classroom implications [C]. Engle Cliffs, NJ: Prentice Hull,1999.27- 39.
7[3]Maclntyre, P. D. & Gardner, R. The subtle effects of language anxiety on cognitive in the second language [J]. LanguageLeaming, 1994, (44), 283 - 305.
8[4]Oxford, R. L.Anxiety and the language leamer: new insights.In I. Amold(Eds.), Affect in Language Leaming[C]. Cam-bridge: Cambridge University Press, 1999.58 - 67.
9[5]Young, D.Language anxiety from the foreign Language specialist's perspective: Interviews with Krashen, Omuggio Hadly, Ter-rell, and Rardin [J]. Foreign Language Annals,1992.
10[14]Underhill,A.Process in Humainmsitc Education[J].ELTJournal,1989,43/4,pp.250-260.
