Bas Aarts is Professor of English Linguistics and Director of the Survey of English Usage at University College London, UK. His research interest is in the field of syntax, more specifically verbal syntax. His recent publications include: Syntactic gradience (2007, OUP), Oxford modern English grammar (2011, OUP), The English verb phrase (2013, edited with J. Close, G. Leech and S. Wallis, CUP), Oxford dictionary of English Grammar (2nd edition 2014; edited with S. Chalker and E. Weiner, OUP), as well as articles in books and journals. He is a founding editor of the journal English Language and Linguistics (CUP).