Questions & Answers about Mama tuli małe dziecko.
Because some nouns have the same form in the nominative and accusative singular.
Here, dziecko is the direct object of tuli, so it is in the accusative case. But the accusative singular of dziecko happens to look exactly the same as the nominative singular:
- nominative: dziecko
- accusative: dziecko
So the case is different in function, even though the form does not change.
For neuter singular adjectives, the nominative and accusative forms are usually the same.
So:
- nominative: małe dziecko
- accusative: małe dziecko
That is why both words look unchanged, even though the phrase is functioning as the object.