Now I arrive in American English study. Because I think in the future, the English language is required in the work place, I would like to improve their English.
I now come to study English in the United States. I think that the future of English required to work in English, I would like to improve their own betterment.
Now, I came to study English in the United States of America. Because I think that in the future in English to work I wanted to improve the English of myself better.