Questions & Answers about Moja mama jest w domu.
In Polish, possessive words like mój / moja / moje must agree with the noun in gender, number, and case.
- mój = my (masculine singular, nominative)
- moja = my (feminine singular, nominative)
- moje = my (neuter singular, nominative, or some plurals)
The noun mama is grammatically feminine, so in the nominative singular you must use moja:
- moja mama = my mom
- mój tata = my dad (tata is masculine)
- moje dziecko = my child (dziecko is neuter)
So mój mama is ungrammatical because mój does not match the feminine noun mama.