Pronunciation is very difficult to correct if you have been speaking English for a long time. As you know, practice does not make perfect, it makes permanent. That means if you practice incorrectly, it will become permanent. You need to correct this problem before moving forward because having bad pronunciation is one of the most difficult aspects of speaking to someone who does not speak English well.

for a non - native english speaker like me, i learn a lot how to pronounce well from English song. and for me it works well to help my pronunciation.

There is a free online talking dictionary of English pronunciation. Just click over the pink words to hear them spoken at www.howjsay.com/index.php?word. You can also go to: http://englishphonetics4u.blogspot.com Learn English vocab for free online with sound and pictures Click onto www.learnenglish.de/

listen, repeat, record and listen to yourself, once and again, and speak in from of a mirror or record yourself with your camera- If you do all these things, you will improve your pronounciation in a very short time good luck