6[1]Brown,p.& Levinson,S. 1978."Universals in language usage:politeness phenomena" , in Goody,E.N. (ed.), Questions and Politeness: Strategies in Social Interaction[M]. Cambridge:Cambridge U.P.
7[2]Channell,J.Vague Language [M] .Oxford:Oxford University Press, 1994.
8[3]Lakeoff, G."Hedges:a study in meaning criteria and the logic of fuzzy concepts"[M] .Journal of Philosophical logic. 1972.
9[4]Zade h,L.A."Fuzz sets", Information and Control[M].P:338- 353.
10Butt, David et al. Using Functional Grammar: An Explorer's Guide(2nd Edition) [M]. Sydney: Macquarie University, 2000:119-121.
