What is the four categories of language teaching?

The four categories of language teaching typically include grammar-based instruction, communicative language teaching, content-based instruction, and task-based language teaching. Grammar-based instruction focuses on the rules and structures of the language. Communicative language teaching emphasizes interaction and practical use of the language in real-life situations. Content-based instruction integrates language learning with subject matter, while task-based language teaching involves completing meaningful tasks to promote language acquisition.