Abstract: This book presents findings from a long-term study of a range of complex predicate types subsumed under the heading, Auxiliary Verb Constructions (AVCs), drawing on a database of over 800 languages. Chapter 1 discusses how the terms auxiliary verb and auxiliary verb construction are understood, and then provides an overview of the kinds of functional categories that AVCs serve to encode. A cursory typology is offered of the patterns of encoding inflectional/morphosyntactic/ functional semantic categories in AVCs, and notions of functional and formal headedness within AVCs are introduced. Five macro-patterns of inflection emerge, each with several sub-patterns. Chapters 2 to 5 are dedicated to the presentation of the varied sub-types of inflectional patterns seen in AVCs. These are called the AUX-headed, LEX-headed, doubled, and the split and split/doubled patterns. Each of these is extensively exemplified. In the final two chapters, various aspects of the diachronic origins of AVCs are discussed. Chapter 6 discusses where AVCs go once they have been grammaticalized, offering a range of complex verb forms that have derived from each of the inflectional macro-patterns of AVCs. Chapter 7 discusses diachronic origins of AVCs. This includes a discussion of both typical lexical source semantics for the grammaticalization paths of individual functional subtypes of AVC as well as the syntactic source construction types for each of the five macro-patterns and some of their more common sub-patterns. These source constructions draw into the discussion of how auxiliary verb constructions fit within the broadest possible typology of complex predicate phenomena. It offers an analysis of not only AVCs, but also such related complex predicate phenomena as serial verb constructions, verb complement structures, coordinate and clause chaining constructions, ‘light’ verbs, etc.

Keywords: clause chaining, clause combining, cognitive event schema, diachronic developments, grammaticalization, light verb construction, modal verbs, morphology, morphosyntax, semantic bleaching