%0 Journal Article %T Aspecto inerente e passado imperfectivo no portugu¨ºs: atua£¿£¿o dos princ¨ªpios da persist¨ºncia e da marca£¿£¿o %A Freitag %A Raquel Meister Ko. %J Alfa : Revista de Lingu¨ªstica (S£¿o Jos¨¦ do Rio Preto) %D 2011 %I Scientific Electronic Library Online %R 10.1590/S1981-57942011000200006 %X the main argument in this paper is to present evidences of the action of the persistence principle (hopper, 1991) and the markedness principle (giv¨®n, 2001) on the grammaticalization of portuguese past imperfective. from the quantitative point of view, the verb inherent aspect control shows that the aspectual feature [dynamism] determines the association between the forms in the expression of the past imperfective due to the pprog and imp aspectual histories, where the former is marked [+ dynamic] and the latter [- dynamic] for it also codes temporal distance. these results show that persistence and markedness may be considered converging motivations for the variation process in the expression of past imperfective. %K past imperfective %K grammaticalization %K converging motivations. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1981-57942011000200006&lng=en&nrm=iso&tlng=en