Language teachers often use role-play in the classroom.语言教师经常在课堂上使用角色扮演的方法。He became an expert language teacher.他成了一个有经验的语言教师。It is very helpful for a language teacher to have good diction.语言教师发音好非常有益。There's a shortage of trained language teachers.现在缺少训练有素的语言教师。