1Nattinger, J. R. , & DeCarrico, J. S Lexical Phrases and Language Teaching[ M ]. Oxford: Oxford University Press, 1992:37.
2Becker, J. The Phrasal Lexicon [ M ]. Cambridge Mass: Bolt and Newman, 1975.
3Wray,A. Formulaic language and the Lexicon[M]. Cam- bridge: Cambridge University Press,2002:9.
4Michael Lewis The Lexical Approach :The State of ELT and the Way Forward ,2002.
5Pawley, A. &Syder, F. H. Two puzzles for linguistic theory: native- like selection and native- like fluency [ A ] In Richards,J. & Schmidt, R. (eds). Language and Commu- nication[C] Landon :Lengman, 1983.
6Krashen, Stephen. Second Language Acquisition and Sec- ond Language Learning [ M ]. New York: Pergamon Press, 1981.