7Laufer,B.&Hulstijn,J.Incidental vocabulary acquisition in a sec-ond language:The construct of task-induced involvement[J].App lied Linguistics,2001(22).
8Huckin T,Coady J.Incidental Vocabulary Acquisition in a SecondLanguage[J].Studies in Second Language Acquisition,1999(21).
9Nation P,Waring R.Vocabulary Size,Text Coverage,and Word-Listsp[C].Cambridge:Cambridge University Press,1997.
10Nagy,W.E.,P.A.Herman&R.C.Anderson.Learning words fromcontext[J].Reading Research Quarterly,1985(20).