3Blakemore, D. The organization of discourse[A]. E J. Newmeyer. Linguistics: The Cambridge University Press[C]. Cambridge: Cambridge University Press, 1988. VoI.IV: 229-250.
4Blakemore, D. Are apposition markers discourse markers[J]. Journal of Linguistics, 1996, (32):325-347.
5Blass, R. Relevance Relations in Discourse: A Study with Special Reference to Sissala[C].Cambridge: Cambridge University Press, 1990.
6Brown, P. & S, Levinson. Universals in language usage: politeness phenomena[A], Ester N. Goody.Questions and Politeness: Strategies in Social Interaction[C]. Cambridge: Cambridge University Press, 1978. 56-289.
7Fraser, Bruce. Conversational mitigation[J]. Journal of Pragmatics, 1980, (4): 341-350.
8Jucker, Andreas H. The discourse marker Well: A relevant-theoretical account[J]. Journal of Pragmatics, 1993, (19): 435-452.
9Lakoff, R. Questionable answers and answerable questions[A]. B. B. Kachru, et al. Issues in Linguistics[C]. Urbana, IL: University of Illinois Press, 1973. 453-467.
10Leech, G. Principles of Pragmatics[M]. London:Longnum, 1983.