6Hoey,M.Patterns of Lexis in Text[M].Oxford:OUP,1991.
7Halliday,M.A.K.An Introduction to Functional Grammar[M].London:Edward Arnold,1985.
8Hu,Zhuanglin.Linguistic Features of ABC2 News Broadcasting[M].Department of Linguistics,The University of Sydney,1980.
9Martin,J.R.Process and Text:Two Aspects of Human Semiosis[A].Benson and Greaves(eds).Field of Discourse:theory and application[C].Applied Linguistics,1980.45-55.