Questions & Answers about Мой брат умеет играть на гитаре.
Why is it мой брат, not моя брат or моё брат?
Because брат is a masculine singular noun, and the possessive мой has to agree with it in gender, number, and case.
- мой = masculine singular
- моя = feminine singular
- моё = neuter singular
- мои = plural
So:
- мой брат = my brother
- моя сестра = my sister
In this sentence, брат is masculine, so мой is the correct form.
What case is брат in here?
Брат is in the nominative case because it is the subject of the sentence — the person doing the action.
In Мой брат умеет играть на гитаре, the subject is мой брат.
So the structure is:
- Мой брат = subject
- умеет играть = predicate / verbal idea
- на гитаре = additional information about the instrument
What exactly does умеет mean?