How to say in Czech: Are you learning Portuguese?

English
Are learning
Czech
Učíš se portugalsky?
Are you learning Portuguese on your own?
They are learning Portuguese.
Where did you learn Portuguese?
Do you speak Portuguese?
You speak Portuguese very well.
How do you say that in Portuguese?
You do not speak Portuguese very well.
How good is your Portuguese?
Your Portuguese is getting better.
Your Portuguese is very good.

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