The document discusses various methods and theories of language teaching, including:
1. Grammar-translation, direct method, audiolingual method, and communicative language teaching approaches. Key aspects and principles of each are outlined.
2. Linguistic theories that have influenced language teaching such as behaviorism, innateness/mentalism, cognitive, and input/interactionist theories.
3. The role of applied linguistics, linguistics, and universal grammar in better understanding language learning and determining how to teach language structures.
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