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De Cock, D. 1998. A recurrent word combination approach to the study of formulae in the speech of native and non-native speakers of English [J]. International Journal of Corpus Linguistics3(1）
Cortes, V. 2004. Lexical bundles in published and student disciplinary writing: Examples from history and biology [J].English for Specific Purposes23(3）
Pawley, A. & H. Syder. 1983. Two puzzles for linguistic theory: Native-like selection and native-like fluency [A]. In J. Richards & R. Schmidt(eds.).Language and Communication[C]. New York: Longman
Lancker-Sidtis, D. & G. Rallon. 2004. Tracking the incidence of formulaic expressions in everyday speech: Methods for classification and verification [J].Language and Communication24(2）
Aijmer,K.2002.English Discourse Particles[M]. Amsterdam:John Benjamins.
