Communicative language teaching (CLT) emerged from new theories of language in the 1960s-1980s in Britain and the USA. It views language as a system for communication rather than just grammar rules, and aims to develop learners' communicative competence through authentic tasks. CLT lessons typically involve groupwork, information sharing, role plays, and simulations to encourage fluency over accuracy. The approach is learner-centered and focuses on meaningful communication through language use in real-life settings. While implementation varies, CLT emphasizes understanding messages over grammatical accuracy during the initial stages of language acquisition.