Juče sam poslala prijavu.

Serbian commonly forms the past tense with two parts:

• a present-tense form of biti (to be)
• the past participle of the main verb

So in Juče sam poslala prijavu:

• sam = I am / auxiliary part used in the past tense
• poslala = past participle of poslati (to send)

Together, sam poslala means I sent.

This is the normal way to make the past tense in modern Serbian.

Because sam is a clitic. In Serbian, clitics usually go in the second position of the clause.

So:

• Juče sam poslala prijavu. = natural
• Ja sam juče poslala prijavu. = also natural, because sam is still in second position after Ja
• Juče poslala sam prijavu. = not natural in standard Serbian

This “second-position” rule is one of the most important word-order patterns in Serbian.

Because poslala is the feminine singular form.

The past participle agrees with the subject in gender and number:

• poslao = masculine singular
• poslala = feminine singular
• poslalo = neuter singular
• poslali / poslale = plural forms

So this sentence tells you the speaker is female.

A male speaker would say:

• Juče sam poslao prijavu.

It is understood, so Serbian normally leaves it out.

The full version would be:

• Ja sam juče poslala prijavu.

But Serbian often drops subject pronouns when they are not needed, because the verb form already gives enough information. Here, sam shows first person singular, and poslala also shows the speaker is feminine.

So Juče sam poslala prijavu is completely natural and normal.

Because prijavu is in the accusative case.

The noun prijava means something like application, registration, or report, depending on context. In this sentence it is the direct object of sent, so it takes the accusative singular:

• nominative: prijava
• accusative: prijavu

This is a very common pattern for feminine nouns ending in -a:

• knjiga → knjigu
• poruka → poruku
• prijava → prijavu

The form poslala comes from poslati, which is usually the perfective verb.

Serbian often has verb pairs:

• slati = imperfective, focusing on the process or repeated sending
• poslati = perfective, focusing on a completed sending

In this sentence, the action is presented as completed, so poslati is the natural choice.

Compare:

• Juče sam poslala prijavu. = I sent the application yesterday.
• Juče sam slala prijavu. = I was sending / sent the application yesterday, with more focus on the process, repetition, or background context

Yes, Serbian word order is fairly flexible, but not completely free. The clitic sam still has to follow the second-position rule.

Possible versions include:

• Juče sam poslala prijavu. = neutral, very natural
• Prijavu sam poslala juče. = emphasis on the application
• Ja sam juče poslala prijavu. = emphasis on I
• Juče sam prijavu poslala. = possible, with a different emphasis or style

So the order can change to highlight different parts, but the placement of sam is still tightly constrained.

No. Juče means yesterday by itself, with no preposition.

So you say:

• Juče sam poslala prijavu.

Not something like u juče.

This works similarly to English yesterday, which also normally appears without a preposition.

Yes. This is the perfect (perfekat), and it is the main past tense used in everyday Serbian.

Structure:

• auxiliary biti in the present tense
• past participle

So:

• sam poslala = perfect tense, first person singular, feminine speaker

In modern spoken Serbian, this is the usual way to say past actions like I sent, I went, I saw, and so on.

Only the participle changes to agree with the subject.

Examples:

• female speaker: Juče sam poslala prijavu.
• male speaker: Juče sam poslao prijavu.
• we, mixed group / masculine plural: Juče smo poslali prijavu.
• we, all female: Juče smo poslale prijavu.

So Serbian past forms can give you extra information about the speaker that English usually does not show.

It is pronounced roughly YOO-cheh.

A few details:

• j in Serbian sounds like English y
• u is like oo in food
• č sounds like ch in church
• final e is pronounced clearly, not silent

So juče is approximately YOO-cheh.