This book examines verbal aspect and reduplication of clitics, two of the most extraordinary linguistic phenomena present in contemporary Bulgarian. The investigation follows the basic theoretical conceptions and theory-internal rules of Role and Reference Grammar, a theory which views grammatical structure with reference to its semantic and communicative functions.Bulgarian aspect (vid) is juxtopposed to Aktionsart, a lexical classification of verbs and the clitic doubling structure is explained in terms of its morphology, syntax and the information structure of the language.