Why a book on the nature of language? The answer is surprising in this new book by Bill VanPatten. Language just isn't what most of us think it is-and because of that, the need to know about the nature of language takes on new importance for teachers who really want to teach for acquisition, who truly want to teach for communicative ability and proficiency. It provides teachers with one of the important arguments for striking out on their own and exploring new methods and alternative curricula and assessments. Engaging and reader friendly, this book will challenge every teacher's ideas about what winds up in learners' heads. It will lead teachers to question the content of most current textbooks and the practices contained in them.