7Leech, G. N. Principles of Pragmatics[M]. London: Longman, 1983.
8Levinson, S. C. Pragmatics[M]. Cambridge: Cambridge University Press, 1983.
9Richards, J. C. et al. Longman Dictionary of Language Teaching and Applied Linguistics[Z]. Beijing: Foreign Language Teaching and Research Press, 2000.
10.Ungerer, F. & Schmid, H. J. An Introduction to Cognitive Linguistics[M]. Beijing: Foreign Language Teaching and Research Press, 2001.