<P><EM>Routledge Introductions to Applied Linguistics</EM> is a series of introductory level textbooks covering the core topics in Applied Linguistics, primarily designed for those beginning postgraduate studies, or taking an introductory MA course as well as advanced undergraduates. Titles in the series are also ideal for language professionals returning to academic study.</P><P>The books take an innovative ''practice to theory'' approach, with a ''back-to-front'' structure. This leads the reader from real-world problems and issues, through a discussion of intervention and how to engage with these concerns, before finally relating these practical issues to theoretical foundations. Additional features include tasks with commentaries, a glossary of key terms, and an annotated further reading section.</P><P>In this book Philip Seargeant surveys varieties of English existing within the world today, and the debates and controversies surrounding its present forms, functions and status in di