It is a fact that tense, aspect and modality together form one of the most recurring and active areas of research in contemporary syntax and semantics, as well as in other disciplines of linguistics. A large number of syntactic and semantic phenomena are concerned by the temporal-aspectual-modal level of representation: information about time, aspect and modality is part of virtually all sentences; inflexion is quite widely considered as the core of syntactic projections. Because of this very crucial situation and role in the sentence structure, temporal-aspectual and modal information concerns virtually any part of the sentence and this information has scope over the whole characterization of the eventuality denoted by the sentence.