【正确答案】Although many people consider the role of the teacher an important component of efficient classroom management, some researchers regard it as part of the design of a methodology or approach. As Richards and Rodgers ( 1986) point out, teacher roles are related ultimately to assumptions about language and language learning at the level of approach. That is, different approaches stipulate different roles for the teacher. However, due to the scope of this unit or even this book, it is impossible to examine the various teacher roles in different approaches. Instead, we are going to discuss the most common roles that teachers play in present-day second/foreign language teaching.