"Kupiłem kwiaty dla mojej dziewczyny."

Translation: I bought flowers for my girlfriend.

[dfwgator]

Ach.....jak romantycznie.

[SashaVolko1]

kiedy ty nie masz dziewczyny I nie musisz wydawac na nia pieniadze)))

[Jellei]

Almost good :) "pieniędzy", because you have the negation (even if it's 'musisz' what's negated an not 'wydawać' specifically).

Plus this "ty" is so redundant that it really sounds weird in such a phrase, strange emphasis. But don't take it wrong, that was a really good job :)

[SashaVolko1]

Dziękuję za pomoc, myślę, że więcej nie będę robić takich głupych błędów

[Tebis11]

Dałem ci kamień z napisem "love"

[immerweiter]

why mojej dziewczyny and not moja dziewczyna

[Jellei]

'dla' takes Genitive.

And obviously 'moja dziewczyna' is Nominative, so it works almost only as the subject of the sentence...

[immerweiter]

danke

[Mudkip20]

Why not "...for my girl"? I think it is valid in English to call your girlfriend like that, correct me if I'm wrong

[Jellei]

OK, perhaps it is indeed worth accepting in some sentences. Added.

[Arnoldpitt]

This sentence illustrates one of the problem for a learner of Polish. The -y at then do kwiaty indicates plural. The y at the end of dziewczyny indicates singular of some abstruse case dictated by dla.

[Ollyfer]

Well, in the beginning this would be true, but at this lesson, it can be assumed that the learners have gotten a grip of the grammatical rules in Polish.