This dissertation examines the syntax of compound tenses in Slavic. It
takes into account their diachronic development from Old Church Slavonic to
the current stages. Slavic languages use a number of compound tense
constructions that are not found in many other Indo-European language
groups. They also exhibit a wide range of morphologically diverse
participles. Hence, their investigation leads to a verification of some
common assumptions concerning the properties and structure of compound tenses.
The dissertation explores the constructions formed with the l-participle
and the auxiliary 'be'. The l-participle shows agreement with the subject,
and is claimed to undergo XP movement to SpecTP in order to check the
φ-features of T. This structure is contrasted with the compound tense
formed with the auxiliary 'have' and the past/passive participle, which has
been completely grammaticalized in Germanic and Romance languages, but in
Slavic it has fully developed only in Kashubian and Macedonian.
Special attention is given to the question of typological differences among
Slavic languages, especially with respect to the inventory of compound
tenses and auxiliary cliticization. It is assumed that the variation arose
because of an overlap in marking aspectual distinctions by both aspectual
morphology and aspectual past tenses in Proto Slavic and Old Church
Slavonic. One way to remove this overlap was a morphological reduction of
auxiliaries into clitics and suffixes. It is demonstrated that this
reduction is reflected in syntax, and leads to a reanalysis of l-participle
raising as a head movement operation.