The document discusses the origins and principles of Communicative Language Teaching (CLT), an approach that focuses on developing students' communicative competence. CLT emerged in the 1960s as a response to prior audiolingual and situational language teaching methods. It emphasizes using language functionally and communicatively to develop students' ability to use language appropriately in real-world contexts. The document outlines the key dimensions of communicative competence and principles that guide CLT, such as involving meaningful tasks and real communication.