How to say in Czech: Are they learning Swedish on their own?

English
Are learning on their own?
Czech
Oni se učí švédsky jako samouk?
Are they learning Swedish?
They are learning Swedish.
Where did they learn Swedish?
How good is their Swedish?
Their native language is Swedish.
Their Swedish is getting better.
Their Swedish is very good.
Are they Swedish?
They are not Swedish.
They are Swedish.

Czech phrasebook and translator with tens of thousands of sentences translated by humans. Czechslator is being developed by Michal Měchura. CREDITS Czechslator's sentence generation engine is partially based on Grammatical Framework. All Czech pronunciation is computer-generated using Microsoft Azure Text to Speech. When Czechslator cannot find a translation in its own database, it looks in the PanLex dictionary or obtains a machine translation from Microsoft Translator. PRIVACY Czechslator does not save any cookies in your web browser and does not collect personally identifiable data. Czechslator uses StatCounter for traffic analysis, configured not to save any cookies in your web browser and not to collect any personally identifiable data.