Download or read book Comparative Grammar: The null-subject parameter written by Ian G. Roberts and published by . This book was released on 2007 with total page 2543 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of comparative grammar has been a concern of linguistic theory. Our notion of how grammatical systems vary and our ability to provide sophisticated analyses of this variation is greater than it has been at any time in the past. Concentrating on principles-and-parameters theory, this work presents an overview of what has been achieved.