I work very hard, and I do well at school.

我学习很努力，成绩也很好。

They had to work very hard when they were young.

他们年轻时必须非常努力地工作。

In the first year, I didn't work very hard in class.

第一学年，我在课堂上不太努力。

Seaman work very hard on the ship.

海员们在船上工作非常辛苦。

Nurses work very hard in the hospital.

护士们在医院里工作很辛苦。

Rural teachers work very hard, but they are very patient.

乡村教师的工作非常辛苦，但他们很有耐心。

Medical staff work very hard in hospitals.

医务人员在医院里工作非常辛苦。

Workers in the coal mine work very hard every day.

煤矿的工人每天都很辛苦。

They believe that time is money, so they work very hard.

他们相信一寸光阴一寸金，所以工作非常努力。

I used to work very hard.

我过去工作很努力。