Teachers of English need not only to have a good productive command of the language; they also need to know a good deal about the way the language works. This book asks: What is it that a teacher needs to know about English in order to teach it effectively? It leads teachers to awareness of the language through a wide range of tasks which involve them in analysing English to discover its underlying system. The book consists of 28 units each containing around ten tasks plus a diagnostic introductory unit. Units start at phoneme level & progress through words phrases & sentences on to complete texts. Task-types include recognition categorisation matching explanation & application tasks. Throughout the book the language is illustrated wherever possible from authentic sources so that the teacher can be sure that the English being studied represents current usage.