This book tries to relate the work done in Chomskyan Theory to the areas of language teaching and learning. The book is divided into two main parts. Using the historical approach, the first part traces back the stages, changes and developments that occurred during the development of the Chomskyan Theory. The second explains in some detail the possible implications for language teaching and learning. Although no direct connection can be made between the Chomskyan Theory and language teaching and learning, this humble work has shown that there are some important implications that can be used in these two areas.Although Chomsky never intended to devise a theory of or for Applied Linguistics, the influence of his theory on language teaching has come from his idea of what human language is. Whereas his actual theory of linguistics has changed considerably since the 1950s, his views of what such a theory should achieve has remained fairly constant. The general question is language acquisition, but not in the sense of teaching. It is an essential feature of Chomsky's analysis of the problem that first language acquisition is independent of teaching.