Description: This important monograph summarizes, rethinks, and extends a decade of the author's work on therole assignments - the ways in which the roles implied by verbs of a given type play out in terms of position and other syntactic functions. The study of theta roles and the locality of theta-role assignment leads into many interesting areas of linguistic theory, such as scope, the ECP, X-bar theory, binding theory, and the weak crossover condition; Williams's reconstruction thus offers a systematic integration of a remarkably wide range of syntactic phenomena.

Williams starts by outlining a theory of the clause, specifically, of the distribution of Nominative Case and Tense. He then develops a formalism for the notion of"external argument" that is used throughout the rest of the book. Subsequent chapters review the issues surrounding the syntactic expression of the subject-predicate relationship, extend the notion of external argument to include NP movement, and reanalyze the verb movement constructions as deriving from the calculus of theta roles rather than movement.

The last chapter distinguishes referential dependence and coreference, showing that a general Leftness condition governs the former, while the binding theory restated in terms of theta relations governs the latter.

Edwin Williams is Professor of Linguistics at Princeton University.

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