4Anthony, L. AntConc: Design and Development of a Freeware Corpus Analysis Toolkit for the Technical Writing Classroom[ C]. 2005 IEEE International Professional Communication Conference Proceedings,2005.
5Biber, D. , Conrad, S. and Reppen, R. Corpus Linguistics [ M ]. Foreign Language Teaching and Research Press, Cambridge University Press ,2000.
6Lyons J. Language and Linguistics[ M]. Cambridge University Press, Cambridge. M,1981.
7Kennedy, G. An Introduction to Corpus Linguistics [ M ]. Foreign Language Teaching and Research Press,2000.
8Sinclair, J. How to use corpora in Language Teaching[ M ]. John Benjamins Publishing Company,2004.
9Sinclair, J. Trust the text[ M]. Routledge London,2004.
10Thomas, J. Using Corpora for Language Research[ M]. Foreign Language Teaching and Research Press ,2001.