Acknowledgements The author and publisher would like to thank the following individuals who reviewed Practical English Language Teaching and Practical English Language Teaching: Grammar manuscripts at various stages of development and whose commentary was instrumental in helping us shape these professional reference volumes: Kathleen Bailey, Monterey Institute of International Studies, Monterey, California, USA Ronald Carter, Centre for English Language Education, Department of English Studies, University of Nottingham, UK Andy Curtis, The English School, Kingston, Ontario, Canada Nicholas Dimmitt, Asian Institute of Technology, Pathumthani, Thailand Fernando Fleurquin, ALIANZA, Montevideo, Uruguay Donald Freeman, School for International Training, Brattleboro, Vermont, USA Marc Helgesen, Miyagi Gakuin Women’s University, Sendai, Japan Caroline Linse, Sookmyung University, Seoul, Korea Donald Occhiuzzo, World Learning/School for International Training: formerly of Alumni, Sao Paulo, Brazil Betsy Parrish, Hamline University, St. Paul, Minnesota, USA Kathy Weed, Editor, TESOL’s Essential Teacher, Geneva, Switzerland I would like to thank my good friend Professor Ron Carter who acted as a “critical buddy,” reading and reviewing an earlier version of the manuscript and making many helpful suggestions for improvement. Needless to say, remaining shortcomings are mine alone. I would also like to thank the stu- dents in my Graduate Diploma in ELT course at the University of Hong Kong who “road-tested”earlier versions of the book. Last, but not least, many thanks to my editors at tffunaersen, Linda O’Roke and David Averbach. If a more professional, easy-to-work-with bunch of editors exists anywhere, I have yet to meet them！- David Nunan