"Moja córka jest studentką."

Translation: My daughter is a student.

[shirel.tai]

Why student is written with an ą ?

[ngfio]

Because the case you have to use in this sentence is not the nominative. "Moja córka to studentka", but "Moja córka jest studentką", see https://en.wiktionary.org/wiki/studentka#Polish.

[JaniceSchl1]

Instrumental yes?

[BenYoung84]

Yes

[Gabriel375386]

Why can't we say "My daughter is student" instead of "a student"

[BenYoung84]

English is very consistent about putting an article in front of nouns, so writing "My daughter is a student" follows standard English rules and omitting the "a" is incorrect.

[Meziane13003]

Can we have some link about this rule? Saying "He is student" doesn't sound bad to me. Thanks!

[Jellei]

https://davidappleyard.com/english/articles.htm

"In English, an indefinite article is needed in front of professions."

[VcR9JJ27]

Zła intonacja lektora - jak w zdaniu pytającym!

[gsdobek]

Why is "Moja córka jest studentkou" not acceptable? (My daughter is a female student.) Clunky, but technically correct.

[alik1989]

Studentkou? That belongs in the Czech course, I'm afraid. The feminine instrumental ending in Polish is -ą.