The partitive and pseudo partitive structures are two syntaxique categories which pose a lot of problems when we want to determine the antecedent of the relative pronoun, especially, when the seed of the syntagme is determined by a plural complement ; structures which are almost the same, but with different semantique particularities, the determination of the antecedent of the relative pronoun, takes into consideration a certain number of factors, not only syntaxiques, semantiques, but also pragmatique, as we shall see in some of the examples drawn from the literary work of Miguel de Cervantès.