| The coursebook cannot be suitable for all casese, therefore it is necessory for teacher to make the second development of coursebook, matching with the practice. On the theory level, how should teachers change their traditional teaching concept and coursebook concept and raise the second development from intuition and experience up to the level of theory? On the practice level, how should teachers change their traditional teaching methods and replace the idea of teaching coursebooks with that of using coursebooks to teach? This essay focus on principles and implementation strategies of the second development of coursebooks so as to take measures pertinently to narrow the gap between coursebooks and the real teaching situations.This essay falls into four parts:The first part covers the background, theoretical and practical significance of the research, the present status, train of research thoughts, research methods, innovation and a clear definition of subject.In the second part, the author probes into the theoretical basis of second development in terms of philosophic epistemology, applied linguistics, psychology of learning, and curriculum and teaching methodology.The third part analyzes the background of second development of coursebooks from factors of environment, students and teachers. It also analyzes coursebooks in the way of "in book" from elements, structure, and dimension of coursebooks, and evaluates coursebooks in the way of "out of book" from the relationship between analysis and evaluation.The fourth part revolves around how to implement the second development of coursebooks, including the change of teaching concept, teacher concept, coursebook concept and coursebook adaption in the course of second development. What's more, this part involves problems of second development and suggestions for improvement, opening up a new path for educational reform of colleges. |