8Ingo Plag.On the role of grammaticalization in creolization[EB/OL].http://www.ling.sinica.edu.tw/labrary/image,1998-06-24.
9Hopper,Traugott.Grammaticalization[M].Cambridge:Cambridge University Press,2003.65,103 -106.
10Joan Bybee.Cognitive processes in grammaticalization[EB/OL].The New Psychology of Language,Volume Ⅱ.M.Tomasello(ed.) New Jersey:Lawrence Erlbaum Associates Inc.http://www.cass.net.cn/chinese/s18_yys/jufayuyi,2001-09-08.