For freestyle classes:
1. tailor the class according to students' needs ( Basically a free talk with a certain topic provided by students)
2. attend classes on time for a booked classes
3. create a relaxing atmosphere for students to talk
4. give feedback to students' performance in class, for example, corrections
For official classes:
Except the former 4 responsibilities, there is one more:
be familiar with the provided teaching materials
Job Requirements
have a clear speaking voice
be proficient in English, especially in Speaking(close to native speakers or native speakers)
have at least one-year teaching experience