Some of my classmates are weak, that is to say, they are in poor health. I think it has something to do with their daily habits. For example, they seldom have meals on time. Instead, they like eating chocolate, ice cream, sugar, etc. They don't like to do exercise, and they often watch TV for a long time. So they can't get enough rest, but they have to get up early in the morning to go to school.

We should learn a lesson from them, form good habits and keep healthy.

【参考译文】

我们班有些同学身体很弱，也就是说，他们的健康状况不好。我想这与他们的日常生活习惯有关。例如，他们不按时吃饭，而是吃一些巧克力、冰激凌和糖一类的东西。他们不喜欢锻炼，经常长时间看电视。这样他们就得不到足够的休息，而第二天他们很早就得起床上学。

我们应该从中得到教训，养成良好的习惯，保持身体健康。