This book is an exploration of categories, constructions, and change in English syntax. A great many books are published on the syntax of English, both monographs and edited volumes, and yet another may seem unnecessary. However, we felt more than justified in adding to the sizeable literature here for two reasons. The first, to borrow from Richard M. Hogg and David Denison’s justification for A History of the English Language, is that ‘one of the beauties of the language is its ability to show continuous change and flexibility while in some sense remaining the same.