4[1]F.de Saussure-Course in General Linguistics Foreign Language Teaching and Research[M].Press Gerald Duekworth &Co.Ltd,1996:23.
5[2]Lyons,J.Semantics[M].London:Cambridge University Press,1997..151.
6[4]Clark,Eve.V."How child describe time and order",in Stud-ies of the Child Language Development[M].Edited by Charles A.Ferguson & Dan.I.Slobin.New York:Holt,Rinehart and Winston,1973.
7[7]Beayen,H.A Corpus-Based Approach to Morphological Productivity[M].Amsterdam:Free University,1989.
