"Látlak az ablakon át."

Translation: I see you through the window.

[RO_4_PM]

Is the preverb separated here due to the lak/lek form of the verb?

[vvsey]

You mean the "át"? It is not a preverb here. It simply means "through", it is a postposition of the noun "ablak(on)".

[RO_4_PM]

látok...

[jsiehler]

If you want to say "I see" like this in Hungarian, say "I understand" instead: Értem.

[RO_4_PM]

értem.

[vvsey]

Oh, sorry, I totally did not get that! :) My bad. :)

[vvsey]

"Látok" is a verb itself. I am not sure I understand what you mean. There is no preverb in this sentence, therefore there is nothing to be separated.

[Hulk014]

Yes.

But in this case he meant the verb " átlátni = to see through something " and the preverb át got separated and moved to the end of the sentence.

[jzsuzsi]

It is misleading. átlátni exists, but in this sentence, there is no separated "átlátni" , but rather látni is the verb, and át is just a postposition.

[SedatKlc]

why dont we say 'átlátlak az ablakon'?

[Nyx_93]

'átlátlak' would mean "I see through you"

[jzsuzsi]

Usually, "I see through you" is átlátok rajtad.

[crquack1]

where is the "you" in this sentence? I read it as "I see through the window". What i see is not specified. Or is it? Should not there be "teged" somewhere as in the other sentence in this section?

[jsiehler]

-lak / -lek is a special verb ending sometimes called the "I->you" conjugation. It indicates that the subject is first person and the direct object is second person.

[vvsey]

Tip: when you see an "L" in the suffix, always suspect this special conjugation.
And here is the Tips and Notes relating to this (at the bottom):
https://www.duolingo.com/skill/hu/Pronom-Objects