%0 Journal Article %T Um especificador a¨ª %A TAVARES %A Maria Alice %J DELTA: Documenta£¿£¿o de Estudos em Ling¨¹¨ªstica Te¨®rica e Aplicada %D 2001 %I Pontif¨ªcia Universidade Cat¨®lica de S?o Paulo - PUC-SP %R 10.1590/S0102-44502001000200002 %X in this article we deal with a type of a¨ª which seems to add a specificity feature to indefinite noun phrases, similar to the linguistic item certo. based on analyses of the english certain carried out by hintikka (1986) and en£¿ (1991), we compare sentences with a¨ª and certo. we aim to demonstrate that such specificity items show equivalence of semantic features, but tend to lead to different conversational implicatures. %K specifiers %K semantic features %K conversational implicatures. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0102-44502001000200002&lng=en&nrm=iso&tlng=en