Questions & Answers about Raport jest już zrobiony, więc mogę odpocząć.
Because raport is the subject of the sentence, so it stays in the nominative case.
- raport = the report
- jest zrobiony = is done
So the structure is basically:
- Raport = subject
- jest już zrobiony = predicate
If you changed the role of the word in the sentence, the case could change too, for example:
- Nie ma raportu. = There is no report.
- Zajmuję się raportem. = I am dealing with the report.
Jest is the present tense of być (to be), so jest zrobiony literally means is done.
In English, you also normally need is in a sentence like The report is done. Polish works similarly here.
That said, in everyday Polish, people sometimes drop jest in informal speech if the meaning is obvious:
- Raport już zrobiony.
This sounds more casual or shortened, like Report’s already done in English. But the full standard sentence is:
- Raport jest już zrobiony.