Chapter 9. Preposition contraction and morphological sideward movement in Brazilian Portuguese
In this paper we discuss data from Brazilian Portuguese which arguably involve one instance of a preposition in the syntactic component but end up surfacing with two instances, yielding what at first sight looks like PP coordination. We argue that the copying of the preposition takes place in the morphological component and is triggered by the Parallelism Requirement on coordinated structures. More specifically, we propose that if morphological merger affects a preposition and an adjacent determiner that is part of a coordinated structure, all conjuncts must undergo similar morphological merger. If the syntactic structure has only one preposition, the morphological component then copies the preposition and merges the copies with all the conjuncts so that the Parallelism Requirement can be satisfied.