港大英语面试，我写了一篇自我介绍，请高人点评一下。有没有语法错误，还有什么不得体的地方请指出来。

港大英语面试，我写了一篇自我介绍，请高人点评一下。有没有语法错误，还有什么不得体的地方请指出来。 interviewer作为称呼有点生硬，除非是惯例，用sir,lady，gentlemen,视情况而定，都挺好的。
Aged at17有点汉化了。now,I 'm 17.
When it comes to my hobbies, they cover a wide range, among which
reading and swimming are my favorite.是病句，I have mang hobbies, among which
reading and swimming are my favorite.I usually go to libraryat weekends or holidays.I have a lot of books in my room .They cover amost every range.
At school,I enjoy all kinds of activities.I often try my best to take part in different kinds of activities to widen my eyes and experience different lifves.