Why students learn English?

The students in China start to learn English when they are in primary school. In many provinces, English are taught as second language. Some people may ask why we need to learn English, what we do that for? Well, in my humble opinion, I think we need English for various reasons. 
中国的学生从小学开始就学英语了。在许多省份，英语作为第二语言教授。一些人问我们为何要学英语，学英语有什么用。在我看来，我认为我们学习英语有不同的原因。
First of all, English is indispensable if we want to enter the university. English teaching in some schools are quite important. Some teachers even use English instead of Chinese to teach their students. Secondly, most of students will need English to read English books or novels. While a few of them will go abroad to study, then English will become a tool to communicate with foreigners. Last but not least, as this world gets smaller, English has become more useful than ever. There are a lot of songs singing in English, if we know how to speak English, we can know about the the lyrics all about. What’s more, sometimes we need to say English to communicate with others. Through English, we know about what happen all around the world. 
首先，英语在大学入学考试中必不可少。英语教育在一些学校中也有其重要。一些老师甚至用英文而不是中文来给学生上课。其次，大多数学生在读英文书籍和小说时要用到英语。而一些学生则要到国外去学习，英语则用作于他人沟通的工具。最后一点，这个世界变得更小了，英语比任何时候都有用。有很多歌曲是用英文唱的，如果我们会说英语，就知道这首歌唱得是什么了。有时候我们还需要用英语与他人沟通。通过英语，我们了解到世界各地发生了什么。
To sum up, learning English is very useful as well as important in our life. To master another language is better than learning nothing at all. 
总的来说，学习英语不仅仅有用，也非常重要。掌握一门语言比什么都不会的好。