tutor

家教、家庭教师

She hired a math tutor to help her son before the exam.

她请了一位数学家教，在考试前帮儿子补习。

导师、指导教授英式

My tutor suggested I narrow down the topic of my thesis.

我的指导教授建议我把论文题目缩小范围。

辅导、指导、当家教

He tutors high school students in physics three evenings a week.

他每周有三个晚上辅导高中生物理。

教导、训练正式

The children were tutored at home by a retired professor.

这些孩子由一位退休教授在家中教导。