1.部分大学生有不健康的生活习惯，例如：晚睡、过度消费、沉溺游戏
2.这种不健康生活习惯的危害
3.如何纠正
写作思路依然是上课反复强调的功能段落的写作思路：首段为负面现象描述(即提出问题)，二段为问题分析（危害），尾段为建议措施。
参考范文：
It can be noticed that there are some unhealthy living habits among young people, especially college students. Typical examples include staying up late, being addicted to games, consuming in an inappropriate way. Thus, due attention should be paid to students’ daily habits.
Apparently, these bad habits may generate negative impacts. To begin with, they may impair students’ physical health and psychological fitness. In addition, what worries many teachers is that they may also exert negative influences on students’ academic performance. To conclude, never can we turn a blind eye to these phenomena.
In view of the seriousness of this issue, it is time that we took effective measure. Firstly, it is suggested that universities or colleges should cultivate students’ awareness of healthy living. Secondly, students themselves are well-advised to learn to regulate and control their own life appropriately. Only by doing so, can we hope to see the ideal scenes in which students enjoy their colorful and healthy life in Ivory Tower.
