1. Live broadcast: Webcast is loved by countless teachers and students because of its interactivity, timeliness, arousing students' enthusiasm and being able to watch it repeatedly.

2. Recording and broadcasting: A large number of open online courses and open classes are recorded and broadcast, which is more convenient for us to learn and stabilize specific knowledge points, or for non-compulsory subjects, we can also meet the needs of learners by recording and broadcasting, and watch learning anytime and anywhere.

3. Live face-to-face teaching: This form is suitable for many people to attend classes at the same time. The combination of live broadcast and face-to-face teaching is needed by many schools and institutions.

4. One-to-one: One-to-one online education is equivalent to offline one-to-one tutoring, which is transferred from offline to online, but this online teaching form greatly facilitates the implementation of the course.