Studies of Applies Linguistics

Applied linguistics is a new, independent and interdisciplinary science and has its own theories, principles and research methods. Linguists have got an agreement that applied linguistics can be discussed broadly and narrowly. Broadly, applied linguistics includes anything to which linguistics could be applied; narrowly, it means the application of linguistic findings to language teaching and learning. But they cannot reach an agreement that applied linguistics has its own theories, some said applied linguistics is only a pure applied discipline and it has not its own theories, others said no to it. In this paper, I will mainly discuss some theories of applied linguistics, the development of applied linguistics, the scope of its study and so on.