Submitted on: 15 September 2002.
Revised on: 21 December 2002.
Accepted on: 05 February 2003.
___________________Cadernos de Estudos Linguisticos
Submitted on: 27 December 2009.
Revised on: 20 February 2010.
Accepted on: 23 March 2010.
___________________Cadernos de Estudos Linguisticos
Submitted on: 22 October 2005.
Revised on: 01 December 2005.
Accepted on: 15 January 2006.
___________________Cadernos de Estudos Linguisticos
http://reply.papertrans.cn/1/45/4453/4453-34.png
http://reply.papertrans.cn/1/45/4453/4453-35.png
http://reply.papertrans.cn/1/45/4453/4453-36.png