"Františku, ty nejsi ženatý?"

Translation: František, you are not married?

[tatka_]

I don't understand it. Why is in question "YOU ARE not married?" instead of "ARE YOU not married?" ?

[Alchamei]

I think in that case the original sentence would be 'Františku, nejsi ty ženatý?'

[BoneheadBass]

"František, aren't you married?" is an accepted translation.

[snikta]

the word order in the English translation is not natural especially after addressing Frantisek by name - we would invert and put "are you"when it is a question.