Conclusion
Having analyzed the aim and the criteria of the oral English course, the students' conditions, the reason for some native English speakers' success, and some problems Chinese teachers of English may encounter in oral English classes, it may be concluded that both native and non-native English speakers have a role in teaching oral English. In order to teach oral English well, a Chinese teacher of English needs to make up for the disadvantages of being a non-native English speaker and for the cultural differences. Both native and non-native English speaking teachers need to be aware of the importance of varying their roles in their teaching behaviors, not only as an authority figure but as an assessor, or an organizer, or a participant. A qualified and sympathetic teacher must have a full understanding of his/her students' needs and interests as well. If a teacher knows his/her own advantages and disadvantages in oral English classes, and those of his/her students, he/she is sure to succeed in oral English classes.