Design and Implementation of English Teaching System for Colleges and Universities Based on Virtual Dialogue

This paper describes a virtual conversation-based English teaching system that combines multiple technologies, including natural language processing, speech recognition, and speech synthesis, to provide students with an intelligent, immersive learning environment. By testing the system architecture, the conversation engine, and the teaching content, it is demonstrated that the method can effectively improve students’ speaking fluency, listening, reading, and writing accuracy, as well as their motivation to learn. The conclusions of this study provide a theoretical basis for extending virtual conversation technology to the field of English teaching, and a feasible method for improving teaching quality.