"The woman sees a boy."

Translation: Ābra taobe urnes.

[Gabriela513108]

What is the difference between urnesi, urnen and urnes? In what cases you should use them?

[xPsGoDWh]

They're all conjugations of the same verb for a different person and number.

urnen - I see,
urnē - you (singular) see,
urnes - he/she/it sees,
urnī - we see,
urnēt - you (plural) see,
urnesi - they see

So, it's like how in English you use an -s for verbs in the third person singular, only you have a different form for all six version. It's similar to Spanish in that way, and also because you don't need a personal pronoun to indicate the subject, since the verb already makes that part clear.

[Evironca12]

Does this apply to the other verbs?

[xPsGoDWh]

There's different types of conjugation, but other than that, yes.