指导者

例句：

1. 1. He is a great teacher who guides students towards success.
   他是一位伟大的老师，引导学生走向成功。
2. 2. She is an excellent tutor who helps her students prepare for exams.
   她是一位优秀的辅导老师，帮助学生准备考试。
3. 3. The professor is always available to provide guidance and support to his students.
   教授总是对学生提供指导和支持。