Grah je već gotov, ali kupus još moram narezati.

Je is the 3rd person singular present tense of biti (to be). In Grah je već gotov, it means is:

• grah = beans / bean stew
• je = is
• gotov = ready / done

So structurally it is The beans are already done.

Gotov agrees with grah in gender, number, and case.

• grah is masculine singular
• so the adjective must also be masculine singular: gotov

Compare:

• grah je gotov = the beans/bean stew is ready
• juha je gotova = the soup is ready
• jelo je gotovo = the dish/meal is ready

This is normal adjective agreement in Croatian.

In everyday Croatian, grah can mean:

1. beans as a food item, or
2. a prepared dish made from beans, often something like bean stew

In a sentence like Grah je već gotov, many speakers would naturally understand it as the bean dish is already done. English often has to be more specific, but Croatian can leave it broader.

It is functioning as the direct object, so yes, it is in the accusative. But for many masculine inanimate nouns in Croatian, the accusative singular looks exactly the same as the nominative singular.

So:

• nominative: kupus
• accusative: kupus

That is why the form does not change.

The same thing happens with many masculine inanimate nouns, for example:

• Imam stol. = I have a table.
• Vidim kruh. = I see bread.

They express opposite time-related ideas here:

• već = already
• još = still / yet

So:

• Grah je već gotov = The beans are already done.
• kupus još moram narezati = I still have to slice the cabbage.

Together they create a nice contrast: one thing is finished, the other is not.

Moram means I must / I have to. It comes from morati (must, have to).

Croatian commonly uses:

• a finite form of morati
• • an infinitive

So:

• moram narezati = I have to slice
• moraš čekati = you have to wait
• moramo ići = we have to go

In this sentence, the implied subject is I, because moram is 1st person singular.

This is mainly about aspect.

• rezati = imperfective, focusing on the action/process of cutting
• narezati = perfective, focusing on cutting something up / finishing the cutting

In this sentence, narezati is natural because the speaker means a task that still needs to be completed: I still have to slice the cabbage.

Very roughly:

• moram rezati kupus = I have to be cutting / cut cabbage (more process-oriented)
• moram narezati kupus = I have to slice up the cabbage (completion-oriented)

The prefix na- often helps create a perfective verb with the sense of doing something to a result.

Croatian often leaves out subject pronouns when they are already clear from the verb form.

• moram already means I have to
• so ja is unnecessary unless you want emphasis or contrast

Compare:

• Još moram narezati kupus. = I still have to slice the cabbage.
• Ja još moram narezati kupus. = I still have to slice the cabbage.
  (more emphatic, maybe contrasting with someone else)

This is very normal in Croatian.

Croatian word order is flexible, but the chosen order sounds natural and highlights the contrast well.

This version gives:

• Grah as the topic of the first clause
• kupus as the topic of the second clause
• već and još as contrasting adverbs

You could also hear variations like:

• Grah je već gotov, ali još moram narezati kupus.
• Grah je već gotov, ali kupus moram još narezati.

These are all possible, but they may shift the emphasis slightly. The original sentence puts kupus early, which makes the contrast stronger: the beans are done, but the cabbage... that I still have to slice.

Croatian has a strong tendency for certain short unstressed words, called clitics, to appear near the second position of a clause. Je is one of those clitics.

So in:

• Grah je već gotov

the clitic je comes right after the first element, Grah.

This is why Croatian often sounds a bit different from English in word order. You are not just placing words by meaning; clitic placement matters too.

It can mean either, depending on context.

In cooking, gotov often means:

• ready
• done
• finished

So Grah je već gotov could be understood as:

• The beans are already ready.
• The beans are already done.
• The bean stew is already finished.

In natural English, done is often the best translation in a cooking context.

Yes, here ali simply means but and introduces a contrast:

• one dish is ready
• the other task is still unfinished

So the sentence is built as:

• Grah je već gotov = one positive/completed situation
• ali = but
• kupus još moram narezati = contrasting unfinished obligation

Yes, in many contexts that is possible.

• moram narezati = I must / have to slice
• trebam narezati = I need to / should slice

Moram usually sounds a bit stronger and more obligatory. Trebam can sound slightly softer, though in everyday speech both are common.

So:

• kupus još moram narezati = I still have to slice the cabbage
• kupus još trebam narezati = I still need to slice the cabbage

Both are natural, but moram is a very straightforward choice here.