This document discusses the relationship between linguistics and language teaching. It explores how different linguistic theories, such as structuralism, transformational-generative linguistics, and functional linguistics, have influenced language teaching methodology and curriculum. While linguistics studies the nature of language itself, language teaching focuses on applying linguistic theories to help students learn a language. Applied linguistics acts as an intermediary that interprets linguistic research and makes it practical for language teachers and learners. Language teaching can also provide feedback to test linguistic theories and determine which ones have useful applications. Overall, there are interactions between linguistics and language teaching, but they remain distinct disciplines.