How to say in Czech: He does not speak Vietnamese very well.

English
does not speak very well.
Czech
On nemluví moc dobře vietnamsky.
He does not speak Vietnamese.
Does he speak Vietnamese?
Does anybody here speak Vietnamese?
He does not care.
Does he like her eyes?
Does he like it?
Does he live here?
Does he understand her?
He speaks Vietnamese very well.
He speaks only a little Vietnamese.

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