Since we go to school, the teachers educate us to be a better person, they tell us that we must study hard, so that we can be the useful person. Many students confuse about what is the useful person. In my opinion, the useful person must have the good merit. A person with the kind heart is favored by everyone and he has the sense to serve others. The bad person will bring danger to others, even to the society. The most important thing of the useful person is to make a contribution to the society. They will make full use of their knowledge and be proud of serving for the society. Our premier Zhou stated his purpose of learning knowledge was to make our country rise. He did it and he became the great person. Becoming the useful person is not easy, we should fight for it.