用功
Meanings
1. diligent
2. industrious (in one's studies)
3. to study hard
4. to make great effort
Characters used
Examples5
就
He is an industrious student to the best of my knowledge.
她
Her diligence is a good example to us all.
如果
If you work hard, you'll pass your exam.
他
He regrets not having worked harder at school.
他
He worked too hard and destroyed his health.