1.We can make some pocket money to buy some meaningful and educational books.
2.Only by doing so can we cultivate our interests and broaden our horizons.
3.Not only our communication ability but also our interpersonal skills can be polished and improved.
4.We can make some close friends to share with each other our own life experience.
5.We will be able to make the most of our everyday time to do some valuable things.
6.It gives you an opportunity to enjoy your life from a different point of views.
7.It is not only meaningful but also entertaining.
8.It can teach us how to face challenges, overcome difficulties, achieve our goals and realize our dreams.
1.It is great waste of time and energy.
2.It costs so much money that many families cannot afford it, which may even result in serious financial burden.
3.It never fails to have a negative effect on our study.
4.It is undoubtedly harmful to our physical and mental heath.
5.Our interpersonal relationship will be affected.
6.It will gradually get you addicted to it.
7.It will cause endless troubles and various problems.
8.It will lead to some unexpected outcomes.
As for the reasons,..., so that...
..., in that
Wax and wane:形容反复 兴衰成败\反复无常\阴晴圆缺
The moon waxes and wanes every month.月有阴晴圆缺
Those who judge condemn themselves.评判他人的人就是在谴责自己
There will be no retreat.没有撤退可言
eg.There is not a ward in the jungle.vs There is no ward in the jungle.
原文：https://www.cnblogs.com/Harukaze/p/14860839.html