You have pronunciation problem, you can't pronounce words properly, this is great app for you.
English Pronunciation includes a lesson on Vowel Sounds, R-controlled vowels, Consonant Sounds that shows you how to pronounce words correctly, besides there is a practice section with lots of words, you can listen and improve your skills.
We support online lookup, you can listen to any word you want, and download for offline use.
Hope it will be a useful application for you.