NOEL BURTON-ROBERTS is Professor of English Language and Linguistics, School of English Literature, Language and Linguistics at Newcastle University, UK. He is the author of "Analysing Sentences: Introduction to English Syntax," "Phonological Knowledge: Conceptual and Empirical Issues" (with Philip Carr and Gerard Docherty) and "The Limits to Debate: A Revised Theory of Semantic Presupposition," He is the series editor (with Maggie Tallerman) for Palgrave Macmillan's Modern Linguistics series, and (with Richard Breheny) of Palgrave Studies in Pragmatics, Language and Cognition.