希望英语自我介绍,看看有错没?最好帮忙加两句话.Hi, everyone! I’m Xu zhongyan.I am f

希望英语自我介绍,看看有错没?
最好帮忙加两句话.
Hi, everyone! I’m Xu zhongyan.I am form Class 15 grade 7 in Zhenjiang Foreign Language School. I am 14 years old.Let me introduce myself.
I have lots of hobbies.I like playing basketball,but I don’t do well in it.I also like reading,because I think it is good for me.It can bring us more and more information. My favourite subject is Maths,and I am good at it.However,I am very carelessly.
This is me, a sunny boy without sadness. That's all. Thank you.