How to say in Czech: He is learning Vietnamese.

English
is learning
Czech
On se učí vietnamsky.
Is he learning Vietnamese?
Is he learning Vietnamese on his own?
Where did he learn Vietnamese?
Does he speak Vietnamese?
He does not speak Vietnamese.
He does not speak Vietnamese very well.
He speaks only a little Vietnamese.
He speaks Vietnamese.
He speaks Vietnamese fluently.
He speaks Vietnamese very well.

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.