写一篇英语作文如何聪明有效的使用手机

Mobile phones are sometimes good for our study, but sometimes they are harmful to our study. If we can use the mobile phone properly, then the mobile phone will help us to learn, improve our knowledge, and broaden our horizons. But some people use mobile phones to play games and chat on the Internet, but they waste too much time. They are very harmful to our mind and body, and also affect our healthy development. Therefore, we should use mobile phones reasonably.翻译：大致的意思就是说有一些人不能够合理的运用手机，他们会上网聊天玩游戏，浪费时间，如果我们合理地用手机，他们会对我们生活有益。

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