Some students are poor at some subjects. How to learn them well? I think, first of all, you should know why you study them. They are all important and useful. If you are interested in them, I"m sure you"ll do well in them. While you study, you should put your hearts into the books, or you"ll get nothing from them. If you have made a mistake, correct it carefully, and read the text again. If you have any questions, ask your teachers, parents or classmates. They will be glad to help you.

【参考译文】
　　
　　有的同学某些学科很不好。怎样把它们学好？我认为首先你应该知道你为什么学习这些学科。它们都很重要，很有用。如果你对这些学科产生了兴趣，我相信你会学好的。当你学习时，你们应该全神贯注地投入到课本中，否则会一无所获。如果你出了错，认真地把错误改正，再重读一下课文。如果你有问题就去问老师、家长或同学，他们会乐于帮助你的。