i am a non-nativespeaker,i introduce a book for writting

Thank you,i think if i need i will read it.Reading is the road to improve writting level,i have no time to read now because i am busy.I heard this book.

Glad that you found a good book to help you. I hope that it has good exercises, because at the end of the day, the best way to learn about writing is by doing it. I think the most important "writing" book you can own is a dictionary. Learning and using new words is important, and good spelling helps others understand you better too! Good luck with your writing. Being a non-native English speaker means you have a big challenge ahead, but you are off to a good start!