The verbal categories of tense and aspect have been studied traditionally from the point of view of their reference to the timing and time-perspective of the speaker's reported experience. They are universal categories both in terms of the semantic-functional domain they cover as well as in terms of their syntactic and morphological realization. Nevertheless, their treatment in contemporary linguistics is often restricted and narrow based, often involving mere recapitulatoin of traditional semantic and morphotactic studies.The present volume arises out of a symposium held at UCLA in May