i understand english wordd very well but i don't have the strength to speak influently, i will be glad if you can help me!
Welcome to the forums.
The only way to learn how to speak it well is to practice speaking. You may find something here to help you: Language Exchanges - ESL Web Directory - UsingEnglish.com
It can also help to watch English language films on DVD, and copy the dialogue, or listen to recorded books.