This paper shows that Portuguese has three types of past participle formations, which share the presence of the string [stressedV + C + V] and differ with respect to its location within the word: (A) [[...]Root + [stressedV + C + V]], for all conjugations, (B) [[...stressedV...+ C]Root + V], for 1st conjugation, and (C) [[...stressed V...]Root + C + V], for 2nd and 3rd conjugations. The specific proposal of the paper is that there is an abstract structure of formal features underlying both the morphophonological form and grammatical semantic interpretation: those formations result from the participial interpretation being met at these three locations. This analysis is an extension of Chomsky's (1995) proposal about formal features.
Portuguese past participle; Double participles; Morphophonology; Formal features