I want to speak english well

I like english very much.
I want to learn english very well.
I have been learning english 9 years in my school.
I like english.Because it is very useful！
but，my english is not good.
I can speak english a little only.
if i speak english very well that i can talk with other country's friend
know other country's interesting things.

Hello, Xiaoye-Waruya. Your sentences are correct and your English is fine. You have several short sentences with a lot of information. Once you have practised more you will be able to reduce the number of sentences by putting the information together. The word English needs to be in initial capital letters - any names of places or people are written this way (as I have done with your name). So, we could write it as follows:

I want to speak English well

Although I have been learning English in my school for nine years, I can only speak a little. I think English is a very useful language. I like it very much and want to learn it well. If I am able to speak very well, then I can talk with friends from other countries and discuss interesting things. 

I want to speak English well.

I like English very much.
I want to learn English very well.
I have been learning english for 9 years in my school.
I like english because it is very useful,  
but,my english is not very good.
I can speak a little English. If I speak English very well then I can talk with friends in other countries, and find out interesting things about them.