Teaching listening and speaking in English in China has been given top priority on the post-secondary level. This has lead to the question of how learners develop communicative language ability (CLA) effectively in computer-assisted language learning (CALL) environments. The authors demonstrate a self-developed language skill learning system with materials development and its application in a teaching process. It was proved from collected research data that the system had a positive effect on improving learners' CLA, especially their listening and speaking skills. [For the complete volume, see ED574893.]