The following pages constitute a survey of and commentary on generative-transformational research in segmental linguistic aspects of English interrogatives from Noam Chomsky's Syntactic Structures (1957) through the present.¹ The scope implied by this statement should render intelligible the omission of some sorts of prima facie relevant material: in general excluded from coverage are (i) treatments of the suprasegmental (prosodic) properties of English interrogatives (except where having a clear bearing on segmental properties (see §4.2)), or of paralinguistic properties of the same (except, again, where having a clear bearing on segmental properties (see §4.3, §5.2)); (ii) work based on pre-Chomskian and/or non-negative- transformational approaches (including possible generative but non-trans- formational or transformational but non-generative approaches),² except where mention of such approaches seems especially useful to the continuity or integrity of the survey (e.g. in § 4.3.3.).