In class, there are always students who don't listen carefully, and some still wander around on their desks. Some are painting; Some secretly read novels; Some leisurely trim their nails or paint yellow in the mirror; Have a plenty of boring, glance left and right, keep looking at the time.
If the two sides are classmates, it is recommended not to say anything. Because it will make the other person feel that you are laughing at the other person and showing off your good grades at the same time. If it is a teacher-student relationship, then you should teach the knowledge yourself. If it's serious, then urge it.
Tell him: black hair doesn't know how to study early, but white head regrets studying late. A lazy youth, a lousy age. No pains, no gains. Learning seeks in suffering, and art practices in diligence. Not afraid of shallow knowledge, but afraid of short ambition.
What does it mean for young people to be sad without hard work?
If you don't work hard when you are young, it's no use being sad when you are old.