Budu li test i roditeljski sastanak isti dan, zamolit ću razrednicu da nam pomakne termin.

Budu li means if ... are / should ... be in a future situation.

In this sentence, budu li test i roditeljski sastanak isti dan means something like:

If the test and the parent-teacher meeting are on the same day...

or a bit more literally/formally:

Should the test and the parent-teacher meeting be on the same day...

Grammatically, budu is the 3rd person plural form of biti used in a future-condition structure, and li is a clitic that helps form this inverted conditional pattern.

This structure is common in standard Croatian and sounds a bit more formal or written than some everyday alternatives.

Yes. That is a very natural alternative, and it means basically the same thing.

So you can compare:

• Budu li test i roditeljski sastanak isti dan...
• Ako test i roditeljski sastanak budu isti dan...

The version with ako is often easier for learners and feels more straightforward. The budu li version is a little more compact and somewhat more formal or written in tone.

Because the subject is plural in meaning:

• test
• roditeljski sastanak

These two nouns are joined by i = and, so together they form a compound subject. Croatian therefore uses plural agreement:

• test i roditeljski sastanak budu

Even though each noun is singular by itself, the whole subject is plural.

Zamolit ću is future I, meaning I will ask.

It comes from:

• infinitive: zamoliti
• auxiliary: ću

In standard Croatian, when the infinitive comes before ću, the final -i is dropped in writing:

• zamoliti + ću → zamolit ću

You can also say:

• Ja ću zamoliti razrednicu...

Both are correct. The difference is mainly word order and spelling convention.

Because it is the direct object of zamoliti.

You are asking whom?

• zamolit ću razrednicu

So the noun must be in the accusative case.

For many feminine nouns ending in -a, the accusative singular ends in -u:

• razrednica → razrednicu
• učiteljica → učiteljicu
• susjeda → susjedu

So razrednicu is just the correct case form after zamoliti.

Nam is the dative clitic form of mi = we/us.

Here it means to us or for us:

• da nam pomakne termin = that she move the time/date for us

In natural English, you might translate the whole idea as:

• that she reschedule it for us
• that she move the appointment/date for us

So nam shows who is affected by the change.

After verbs like zamoliti (to ask/request), Croatian very often uses da + present tense for the action you want someone to do.

So:

• zamolit ću razrednicu da nam pomakne termin

literally means:

• I will ask the homeroom teacher that she move the slot/date for us

This is normal Croatian.

Why not an infinitive? Because the subject changes:

• I will ask
• she will move it

When the second action has a different subject, da + present is especially natural and common.

Also, pomakne is a present-tense form of a perfective verb, but in this kind of clause it refers to a future/resulting action, not a present-time action.

Croatian often expresses time without a preposition.

Here isti dan means on the same day.

This is a common kind of time expression. English needs on, but Croatian often does not.

A useful thing to notice is that dan is masculine inanimate, so its nominative and accusative singular look the same:

• nominative: isti dan
• accusative: isti dan

So even though the form looks unchanged, the phrase functions as a time expression meaning on the same day.

Here termin means a scheduled time, time slot, appointment time, or sometimes date in the sense of a planned slot in a schedule.

So pomaknuti termin means:

• to move the scheduled time
• to reschedule
• to change the time slot

It does not mean grammatical tense here, even though English learners may associate similar-looking words with that idea.

Yes. In standard Croatian, when a conditional clause comes first, it is normally separated by a comma:

• Budu li test i roditeljski sastanak isti dan, zamolit ću razrednicu...

The first part is the condition, and the second part is the main clause. The comma helps mark that boundary clearly.

So in this sentence, the comma is the expected standard punctuation.