Šefica je rekla da je izvještaj dobar, ali da jedan prilog još nedostaje.

Because šefica is a feminine noun meaning a female boss or manager, and in the Croatian past tense the past participle agrees with the subject in gender and number.

So:

• Šefica je rekla = a female boss said
• Šef je rekao = a male boss said

This agreement is very important in Croatian and often gives you extra information that English does not show directly.

They do two different jobs.

• In Šefica je rekla, je is the auxiliary verb used to form the past tense.
• In da je izvještaj dobar, je means is.

So the structure is:

• je rekla = said
• je dobar = is good

English also has both ideas, but in Croatian they are both written as je.

Here da introduces a subordinate clause, usually equivalent to English that.

So:

• rekla da... = said that...

Croatian commonly uses da after verbs of saying, thinking, knowing, noticing, and similar verbs.

In this sentence:

• Šefica je rekla da je izvještaj dobar = The boss said that the report is good

Because both parts after rekla are separate subordinate clauses, and each one is introduced by da.

Structure:

• rekla da je izvještaj dobar
• ali da jedan prilog još nedostaje

Literally, this is like:

• said that the report is good, but that one attachment is still missing

In English, the second that is often omitted. In Croatian, repeating da is very natural and often preferred in this kind of sentence.

Because Croatian has no articles.

That means Croatian does not have separate words corresponding directly to English the and a/an. Whether something is definite or indefinite is usually understood from context.

For example:

• šefica can mean the boss or a boss, depending on context
• izvještaj can mean the report or a report

In this sentence, izvještaj is understood as a specific report from the situation, so English naturally translates it as the report.

Jedan literally means one, but it can also work a bit like English a/an when introducing something not yet specified.

So jedan prilog can mean:

• one attachment
• an attachment

Here it suggests that one item is missing from the set of materials. It sounds slightly more specific than just prilog.

Good question: prilog can mean different things depending on context.

Common meanings include:

• adverb in grammar
• attachment / enclosure / appendix in documents and emails
• sometimes contribution in other contexts

In this sentence, because the topic is a report, prilog means attachment or enclosure, not adverb.

Dobar agrees with izvještaj.

• izvještaj is masculine singular
• so the adjective is also masculine singular: dobar

This is predicate adjective agreement, because the structure is:

• izvještaj je dobar = the report is good

If the noun changed, the adjective would change too:

• knjiga je dobra = the book is good
• pismo je dobro = the letter is good

Because with nedostajati, the missing thing is normally the grammatical subject.

So in:

• jedan prilog još nedostaje

the subject is jedan prilog, and that is why it is in the nominative.

A useful pattern is:

• Nedostaje jedan prilog. = One attachment is missing.
• Nedostaje mi jedan prilog. = I am missing one attachment / One attachment is missing for me.

If the person affected is mentioned, that person often appears in the dative, while the missing thing stays in the nominative.

Here još means still or yet.

So:

• još nedostaje = is still missing

It shows that the attachment has not arrived or been included up to this point.

Croatian word order is flexible, but još nedostaje is a very natural placement.

Because ali means but, and here it connects two clauses:

• da je izvještaj dobar
• da jedan prilog još nedostaje

In Croatian, it is normal to put a comma before ali when it joins clauses like this.

Sometimes in speech you may hear more compressed wording, but in standard, clear Croatian this version with the second da is very natural and elegant:

• Šefica je rekla da je izvještaj dobar, ali da jedan prilog još nedostaje.

It clearly shows that both statements depend on rekla. For a learner, this is an excellent model to follow.