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

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

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