In the early years of generative grammar it was assumed that the appropriate mechanism for generating syntactic structures was a grammar of context-free rewriting rules. The twelve essays in this volume discuss recent challenges to this classical formulation of phrase structure and the alternative conceptions proposed to replace it. Each article approaches this issue from the perspective of a different linguistic framework, such as categorical grammar, government-binding theory, head-driven phrase structure grammar, and tree-adjoining grammar. By contributing to the understanding of the differing assumptions and research strategies of each theory, this volume serves as an important survey of current thinking on the frontier of theoretical and computation linguistics.

V, ThemelPatients to the lowest specifier of V', and Agents to a position outside the minimal VP. Again, thematic information is encoded in terms of configurational properties. Addressing the issue of phrase structure in another domain, Margaret Speas investigates the status of null pronominal objects in Navajo. Following Rizzi (1986), she assumes that null pronouns must meet both a licensing and an identification condition. More specifically, she demonstrates that distributional restrictions on null pronominal objects in Navajo can be explained if it is assumed that null objects obey the identification condition expressed by the Generalized Control Rule of Huang (1984). Distinguishing three types of null objects, she argues that relevant licensing condition on two subtypes of null objects involves rich agreement. However, it appears that there are languages lacking rich agreement but with pro in object position. Speas accounts for these phenomena by a rule of economy of projection. A second series of papers is concerned with the way in which functional categories derive aspects of sentential interpretation. Three issues in this research program are investigated here: external arguments as arguments of functional projections (Kratzer), the specificity interpretation of clitics (Sportiche), and the interpretation of tense (Stowell). In all three cases, phrase structure is put to use to derive interpretive effects. Angelika Kratzer proposes that external arguments are not part of the verb.

O. PRELIMINARY REMARKS Initial drafts of the papers in this collection were presented in a con ference entitled 'Views on Phrase Structure', held at the University of Florida, Gainesville, in March, 1989. Eleven of the twenty-three partici pants in the conference were able to contribute to this volume. The purpose of the conference was to explore theories of phrase structure in their relation to other subsystems of grammar and/or systems of nonlinguistic knowledge. Some of the grammatical subsystems which the authors consider are theta-theory, movement, Case, and binding; a number of papers address how the conceptual system and/or aspects of language use may interact. Unifying the various approaches and perspectives is an attempt to furnish hypotheses concerning prin ciples of phrase structure with some sort of independent justification. 1. PHRASE STRUCTURE THEORY: A BRIEF HISTORY A basic outline for a theory of phrase structure theory is accepted by all of the authors here; it is known as 'X-bar theory'. The concepts of X-bar theory are expressed in some form by a number of pre-generative linguists. For example, Bloomfield (1933) contrasted endocentric struc tures such as noun phrases and verb phrases with those he considered exocentric, e. g. prepositional phrases and clauses. Jespersen (1933), while presenting a functional system of description (in terms of 'ranks', where rank one is 'nominal', for example), clarified the relations among the head of a phrase, its modifier, and a phrase which modifies the modifier.

Explores licensing theory and its implications for a theory of syntax. This book brings a series of papers which focus on developing a constrained set of licensing mechanisms relating elements in a syntactic representation, and on the different properties of lexical and functional heads as licenses of complements and specifiers.

In this technical monograph, Paul Postal deals with several issues that inexplicably have been treated only marginally in the development of current linguistic theorizing. He focuses on three problems in syntactic theory that are connected to "extraction" -- the occurrence of an element in a distinguished position distinct from its unmarked locus in simple clauses. He examines a largely ignored body of systematic contrasts among known extraction types, the status of the Coordinate Structure Constraint, and the phenomenon of Right Node Raising. Current Studies in Linguistics 29

This is a collection of previously published essays on comparative syntax by the distinguished linguist Richard Kayne. The papers cover issues of comparative syntax as they are applied to French, Italian, and other Romance languages and dialects, together forming a strongly cohesive set that will be valuable to both scholars and students.

Derivation and Explanation in the Minimalist Program presents accessible, cutting edge research on an enduring and fundamental question confronting all linguistic inquiry – the respective roles of derivation and representation. Presents accessible, cutting edge research on the respective roles of derivation and representation in syntactic inquiry. Discusses a wide range of phenomena and also includes alternative, representational perspectives. Features papers by M. Brody, C. Collins, S. Epstein, J. Frampton, S. Gutmann, N. Hornstein, R. Kayne, H. Kitahara, J. McCloskey, N. Richards, D. Seely, E. Torrego, J. Uriagereka, C.J.W. Zwart.

The main topic of this work is the interaction between syntactic structure and meanin within the noun phrase, with data drwn primarily from English and Italian.

This authoritative introduction explores the four main non-transformational syntactic frameworks: Head-driven Phrase Structure Grammar, Lexical-Functional Grammar, Categorial Grammar, and Simpler Syntax. It also considers a range of issues that arise in connection with these approaches, including questions about processing and acquisition. An authoritative introduction to the main alternatives to transformational grammar Includes introductions to three long-established non-transformational syntactic frameworks: Head-driven Phrase Structure Grammar, Lexical-Functional Grammar, and Categorial Grammar, along with the recently developed Simpler Syntax Brings together linguists who have developed and shaped these theories to illustrate the central properties of these frameworks and how they handle some of the main phenomena of syntax Discusses a range of issues that arise in connection with non-transformational approaches, including processing and acquisition

presupposition fails, we now give a short introduction into Unification Grammar. Since all implementations discussed in this volume use PROLOG (with the exception of BlockjHaugeneder), we felt that it would also be useful to explain the difference between unification in PROLOG and in UG. After the introduction to UG we briefly summarize the main arguments for using linguistic theories in natural language processing. We conclude with a short summary of the contributions to this volume. UNIFICATION GRAMMAR 3 Feature Structures or Complex Categories. Unification Grammar was developed by Martin Kay (Kay 1979). Martin Kay wanted to give a precise defmition (and implementation) of the notion of 'feature'. Linguists use features at nearly all levels of linguistic description. In phonetics, for instance, the phoneme b is usually described with the features 'bilabial', 'voiced' and 'nasal'. In the case of b the first two features get the value +, the third (nasal) gets the value -. Feature value pairs in phonology are normally represented as a matrix. bilabial: + voiced: + I nasal: - [Feature matrix for b.] In syntax features are used, for example, to distinguish different noun classes. The Latin noun 'murus' would be characterized by the following feature-value pairs: gender: masculin, number: singular, case: nominative, pred: murus. Besides a matrix representation one frequently fmds a graph representation for feature value pairs. The edges of the graph are labelled by features. The leaves denote the value of a feature.