1[1]Halliday M. A. K. Text and context [ J], in Sophia Linguistica,Sophia University, Tokyo, Japan, 1980(6): 60-74.
2[2]Halliday M. A. K. Hasan R. Language, context and text: aspects of language in a social-semiotic perspective [ M ]. Victoria:Deakin University Press, 1985. 55 -65.
