6[2]Brown,P.& S.Levinson.Politeness:Some Universals in Language Use[M].Cambridge:Cambridge University Press,1987.
7[3]Martin,J.R.Beyond exchange:Appraisal systems in English[A].In Hunaton,S.& G.Thompson.Evaluation in Text[C].Oxford:Oxford University Press,2000:142-175.
8[4]Martin,J.R.& D.Rose.Working with Discourse:Meaning Beyond the Clause[M].London:Continuum,2003.
9[5]Martin,J.R.& P.R.R.White.Language of Evaluation:Appraisal in English[M].New York:Palgrave,2005.
10[6]Motta-Roth,D.Book reviews and disciplinary discourses:Defining a genre[A].Paper Presented at the TESOL 29th Annual Convention & Exposition[C].Long Beach,CA,USA,1995.