1[1]Brown P.and S.Levinson.Universals in Language Use:Politeness Phenomena[A].In E.Doody(ed.).Questions and Politeness:Strategies in Social Interaction[C].Cambridge:Cambridge University Press,1978.56-311.
2[2]Brown P.and S.Levinson.Politeness,Some Universals in Language Use[M].Cambridge:Cambridge University Press,1987.
3[3]Lakoff R.The Logic of Politeness[A].In Johansen & Sonne (ed.).Pragmatics and Linguistics[C].Odense:Odense University Press,1973.32-203.
4[4]Leech G.Principle of Pragmatics[M].London & New York:Longman,1983.
