This paper approaches the Communicative Approach （CA） from ontological perspective by making structural and functional analyses with consideration of influential variables in the communicative language teaching. In terms of entitative dimension, the basic components of the CA are communicative subjects, context and situation, content, and mode. From the functional perspective, the CA helps to improve the learners＇ ability to communicate in the target language, the dual construction of the learners and the target culture, and the mutual development of the teacher and the learners.
