Questions & Answers about Můj kurz češtiny trvá dva měsíce.
Word by word:
- Můj – my (possessive pronoun, masculine singular)
- kurz – course
- češtiny – of Czech (literally: Czech language in the genitive case)
- trvá – lasts / takes (time)
- dva – two
- měsíce – months (accusative plural, used here for duration)
So the literal structure is: My course of Czech lasts two months.
Because kurz is masculine.
The possessive pronoun můj / moje changes according to the gender and number of the noun:
- masculine singular: můj kurz – my course
- feminine singular: moje kniha – my book
- neuter singular: moje auto – my car
So with kurz (masculine), you must use můj, not moje.
(In colloquial speech you may hear můj/moje mixed a bit more freely, but the standard form here is clearly můj kurz.)