work hard at your lesson还是on your lessonwork hard at your lesson还是on your lesson 还是都可以?

问题描述:

work hard at your lesson还是on your lesson
work hard at your lesson还是
on your lesson 还是都可以?

work hard on your lesson
请见人教版六年级上册英语教材第五单元课文

at

2者皆可 at用在学业上 on则泛指一切努力的对象
You always work hard at your lessons and I wish you success in your College Examinations.你总是很用功,我祝你高考成功.
-- 高中英语口语25天快训 - Day 15 Congratulations

work hard on 固定搭配