Breakdown of Moja siostra kupiła ładną sukienkę.
ładny
pretty
siostra
sister
mój
my
sukienka
dress
kupić
to buy (perfective)
Questions & Answers about Moja siostra kupiła ładną sukienkę.
I learned the verb for 'to buy' is kupować. Why does this sentence use kupiła?
In Polish, verbs come in pairs. kupować is the imperfective form used for ongoing or repeated actions. kupić is the perfective form used for completed, one-time actions. Because the sister successfully finished buying the dress, we use the past tense of the perfective verb kupić, which becomes kupiła for a feminine subject.
Why does the verb kupiła end with an -a?
In the Polish past tense, verbs change their endings to match the gender of the subject. Since siostra (sister) is feminine, the third-person past tense ending is -ła. If a male (like a brother) had bought the dress, the verb would be kupił.
Why is it ładną sukienkę instead of the dictionary form ładna sukienka?
The dress is the direct object of the sentence because it is the thing being bought. This means it must take the accusative case. For feminine words in this case, the adjective ending changes from -a to -ą (ładną), and the noun ending changes from -a to -ę (sukienkę).
Why do we use Moja here instead of just Mój?
Possessive words like 'my' have to match the gender of the noun they describe. Moja is the feminine form to match siostra. If you were talking about a masculine subject like a brother, you would use the masculine form Mój (Mój brat).
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