4Richards J C, Rodgers T S. Language Teaching [ M ]. Approaches and Methods in Beijing: Foreign Language Teaching and Research Press & Cambridge University Press, 2000.
5Coady J T. Huckin. Second Language Vocabulary Acquisition [ M ]. Cambridge: Cambridge University Press, 2001.
6Yuan Gao, Thomas Fuyin Li. Ten Lectures on Applied Cognitive Linguistics by John Taylor [ Z ]. Beijing: Foreigu Language Teaching And Research Press, 2007.
7Ungerer F, Schmid H J. An Introduction to Cognitive Linguistics[M]. London: Longman, 1996.
8[3]Haiman,J. Natural Syntax [M]. Cambridge: Cambridge University Press,1985b.
9[4]Labov, W, The Boundaries of Words and Their Meaning[A]. In C.-J. Bailey and R. W. Shuy(eds. ) New Ways of Analysing Variation in English[C]. Washington :Georgetown University Press, 1973.
10[5]Lakoff,G. Hedges :A study in meaning criteria and the logic of fuzzy concepts [J]. Journal of Philosophical Logic, 1973: 458-508.
