I don't care what you are.  My cousin's a doctor, and she still has a heavy accent.  So did my father after being here for over 30 years, and he was a very intelligent engineer.  I also know many, many highly successful businessmen from all over the planet, and all still talk with an accent if English is their second language.  

The only time it's almost non-evident is when a child is raised speaking more than one language.  I see that in some young Chinese and Taiwanese over there, because part of their curriculum now is early English classes often taught by Americans with no accent.

I've been studying Mandarin for 14 years now, largely because I not only do business there, but also because I'll be moving there.  I not only can't shake my accent even in their very simple, short words, but I still struggle trying to use it in a business conversation.

Curious, how many languages do you fluently speak?

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