3Crystal, David. English as a Global Language [M]. Cambridge: Cambridge University Press, 2003.
4Kachru, B. B. Standards, codification, and sociolinguistic realm: The English language in the outer circle [A]. In R. Quirk & H. G. Widdowson(ed). English in the Worm [C]. Cambridge: Cambridge UP, 1985: 11-30.
5Pennycook, K. Beyond homogeny and heterogeny: English as a global and worldly language [A]. In C. Mair(ed). The Politics of English as a World Language [C]. Amsterdam: Rodopi, 2003: 3-17.
6Phillipson, Robert. Linguistic Imperialism [M]. Oxford: Oxford University Press, 1992.
7Smith, L. E. Spread of English and issues of intelligibility [A]. In B. B. Kachru(ed). The Other Tongue: English Across Cultures [C]. Urbana and Chicago: University of Illinois Press, 1992: 75-90.
8Clark, H. H. 1979. Responding to indirect speech acts. Cognitive Psychology 11: 430-477.
9Coulson, Seana. 1995. Cognitive science. In Handbook of Pragmatics: Manual, ed. Jef Verschueren et al., 123-140. Amsterdam: John Benjamins.
10Dascal, M. 1983. Pragmatics and the philosophy of mind. Vol. 1, Thought in Language. Amsterdam: John Benjamins.