6Richard D. Lewis, The Cultural Imperative: Global Trends in the 21st century [M].Yarmouth, ME: Intercultural press.
7Brown,P & Levinson, S.C.Politcness: some universals in language usage [M]. New York: Cambridge University Press, 1987.
8Ting-Toomey Stella, Facework Competence in Intercultural Conflict: an up- dated, Face-negotiation theory [M]. Theory.International Journal of intercultural relationship,1998.
9Goffman, E, On Face-work,In E. Goffman, Interaction ritual [M]. New York: Pantheon, 1967.