How to Be a Native Speaker in English

I think in many ways, you can have a deeper knowledge of the English language than the average native speaker. Don't worry about casual expressions and pronunciation - it will come naturally over time as you advance. You spend more time listening to the right TV programs or talking to the right people. I really think that's the best way to learn these words. And if you don't believe me, just ask a random person on the street to explain the present perfect tense. 95% of English people, they have no idea what that means.