How to say in Czech: Is he learning English on his own?

English
Is learning on his own?
Czech
On se učí anglicky jako samouk?
He is learning English.
Is he learning English?
Where did he learn English?
His English is getting better.
His English is very good.
His native language is English.
How good is his English?
He is English.
He is not English.
Is he English?

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