It’s important for us to keep healthy. As middle school students, we should have a healthy lifestyle. Here is some advice.(开篇总述个人观点,引出下文)
First, we should do exercise for at least half an hour every day, such as running and walking. Second, we should have a balanced diet. Eat more fruit and vegetables. Try not to eat junk food Third, we'd better not spend too much time surfing the Internet. It's bad for our study and eyes. Fourth, go to bed early and don't stay up late, because enough sleep is good for our health. Finally, be happy. Learn to smile to ourselves at any time.(at least, such as, try not to do, had better not do, it's bad for 等固定短语及句型的使用使文章表达流畅、富有文采;First、Second、Third、Fourth、Finally 的使用使文章条理分明、脉络清晰)
If we can follow the advice, I believe we can keep healthy. (用含有if引导的条件状语从句的复合句总结全文,属于高级句型;书写工整)