Compared with traditional teaching,

Compared with traditional teaching, distance education has the characteristics of open and informationalized teaching image, intelligent teaching tools and complicated teaching object components. The network-assisted language teaching developed by CALL has the advantages of "fast", "efficient", "large amount of information" and "flexible". It is a powerful tool for both "instant interaction" and "post-investigation". In addition, online learning is actually multi-to-many learning, which is the carrier of all people to teach everyone. Not only can real-time communication and interaction be achieved between teachers and students, but also learning resources and experience can be shared and seamlessly docked between students and students. It should be said that the traditional distance network education mostly uploads the aforementioned resources and arranges them slightly, then shares them directly as teaching resources to learners. Some video resources are even just the whole process of teachers' classroom teaching. They are uploaded to the network without any processing and production. That is to say, the quality of learning resources is not high. But today, with the popularization of broadband, the further reduction of network speed and rates, and the increasingly intelligent clients such as mobile phones and tablets, network distance learning has changed from "seller's market" to "buyer's market". In addition, the current online education has developed to real-time education, which is dominated by online education.