to be a substitute teacher take over a class for an absent teacher teach for an absent teacher
The teacher was sick, so Miss Smith filled in for her.
老师生病了, 所以史密斯小姐来代课。
—— 辞典例句I´ll be your substitute for the next few days.
我是你们的代课老师今后的几天里。
—— 给力词典精选The children were reprimanded for abusing the substitute teacher.
孩子们因辱骂代课老师而遭到严厉训斥。
—— 给力词典精选Having a substitute teacher can be a lot of fun.
有代课老师可能很好玩。
—— 给力词典精选The teacher´s ill, so a substitute is teaching today.
那位教师生病了, 因此今天由代课教师在教课。
—— 给力词典精选