how to improve my writen english ,.such as article ?

I think the best way you can learn something is by practicting it! Write as much as you can, for example if you find it difficult at the beggining you can try to read an article or an extract and then resume it using your own words. Or you can keep a diary or join english forum. If you have difficulties in memorizing new words you can choose a topic (for example internet, television, cooking ecc), write down a list of vocabularies connected to this topic and then try to write something about it. Even reading a lot can be useful! Of course I'm just suggesting, I guess there is nothing such as the perfect way of learning and you have to find the way which best suits you! Good luck :)

by writing

thank you very much .apperacite your message