Compared with traditional teaching, distance education has the characteristics of open, information-based teaching image, intelligent teaching tools and complex teaching objects. The network-assisted language teaching developed by CALL has the advantages of "fast", "efficient", "large amount of information" and "flexibility". It is a powerful tool for "instant interaction" and "post-mortem". In addition, e-learning is actually many-to-many learning, it is the carrier that everyone teaches everyone. Not only can real-time communication and interaction between teachers and students be realized, but learning resources and experiences can be shared and seamlessly connected between teachers and students. It should be said that most of the traditional long-distance online education is to upload and sort out the above resources, and then directly share it with the learners as teaching resources. Some video resources are even just the whole process of teachers' classroom teaching. They are uploaded to the network without any processing and production. In other words, the quality of learning resources is not high.
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