This extended investigation of the semantics of event (and state) sentences in their various forms is a major contribution to the semantics of natural language, simultaneously encompassing important issues in linguistics, philosophy, and logic. It develops the view that the logical forms of simple English sentences typically contain quantification over events or states and shows how this view can account for a wide variety of semantic phenomena. Focusing on the structure of meaning in English sentences at a &"subatomic&" level&-that is, (...) a level below the one most theories accept as basic or &"atomic&"&-Parsons asserts that the semantics of simple English sentences require logical forms somewhat more complex than is normally assumed in natural language semantics. His articulation of underlying event theory explains a wide variety of apparently diverse semantic characteristics of natural language, and his development of the theory shows the importance of seeing the distinction between events and states. Parsons demonstrates that verbs, also, indicate kinds of actions rather than specific, individual actions. Verb phrases, too, he argues, depend on modifiers to make their function and meaning in a sentence specific. An appendix gives many of the details needed to formalize the theory discussed in the body of the text and provides a series of templates that permit the generation of atomic formulas of English. (shrink)

The thesis is an attempt to give a precise formal semantics for various time-referential linguistic categories of English such as tense, perfect, progressive and Aktionsart or "action type", with the ultimate goal of explaining why with a verb phrase such as walk the inference from, for instance, John is walking to John has walked is intuitively valid, while with a verb phrase such as build a house the even weaker inference from John is building a house to John will have (...) built a house is intuitively invalid. The difference is seen as one of the Aktionsart of the sentences involved. ;Accordingly, a theory of Aktionsarten is developed in chapter 2. Four different Aktionsarten are formally distinguished. In chapter 3 a theory of the tenses and their interaction with temporal adverbials is worked out. Chapter 4 is about the perfect. The so-called "extended now" theory of the perfect is given a precise treatment. Finally, chapter 5 deals with some problems of the English progressive. Especially the so-called "imperfective paradox" is given a solution. ;The method I use is that of model-theoretic semantics applied to natural languages, as it was first developed by the logician, Richard Montague. (shrink)