The Sound of American English

Thank you very much for this tip!!!! I will use it a lot since I am going to teach English and my pronunciation is terrible.

hello,i am come from china, i try to learning better english but i can open my mouth, because i am learning from book and internet or somewhere,i get some friends they from all round world, but only chatting with msn or yahoo,we just chatting with keyboar,so that is why my sound of english is not good. but i think the sound of american english then the sound of U.K english is hard, because the friend come from U.S.A they speaken english is so fast