6Davidson,B.W.Comments on Dwight Atkinson's "A Critical Approach to Critical Thinking in TESOL" A Case for Critical Thinking in the English Language Classroom[J].TESOL Quarterly,32,1,1998:19-123.
7Eades,D.I don't Think it's An Answer to the Question:Silencing Aboriginal Witnesses in Court[J].Language in Society,29,2000:161:195.
8Firth,A.& Johannes W.On Discoursing,Communication,and (some) Fundamental Concepts in SLA Research[J].The Modern Language Journal,81,1997:285-300.
9Gumperz,J.Sociolinguistics and Communication in Small Groups[J].In John B.Pride and Janet Holmes(eds.)1972,Sociolinguistics.Harmondsworth:Penguin,1970:202-224.
10Halliday,M.A.K.An Introduction to Functional Grammar[M].London:Edward Arnold,1985.
