Postpositions in Munduruku (Tupi): Formal and Functional Features

The Munduruku people live in the states of Pará and Amazonas, including a handful of residents in Mato Grosso, in Brazil. My research about the language takes place within the Munduruku population of Pará. It is a language of the Tupi stock, that belongs to the Munduruku family. It is of head-marking type. The most common constituent order is s(o)v. The arguments do not receive morphologic marks, usually occurring in noun phrases. The verb receives person marks, which indicate/co-refer subject and direct object. Our objective here is to present the inventory of the postpositions,  in order to discuss the properties they share; what their structural and functional features are; and their participation in the passive voice, causative, subordination, modality, source of information, and locative and possessive predication. We also approach the isomorphism among postpositions, nouns and verbs; the syntactic relation that establishes the postpositional phrase with the rest of the sentence: whether argument or adjunct. Finally we will also reflect upon its typology.