Da li si tačno napisala njenu adresu?

Da li is a very common way to form a yes/no question in Serbian.

So:

• Da li si napisala njenu adresu? = Did you write her address?
• Da li si tačno napisala njenu adresu? = Did you write her address correctly/exactly?

It does not have a direct one-word equivalent in English. It simply signals that the sentence is a question.

Serbian often places short unstressed words, called clitics, near the beginning of the sentence, usually in the second position.

In this sentence:

• Da li comes first as the question marker
• si follows early because it is a clitic

So:

• Da li si tačno napisala njenu adresu?

This word order is natural in Serbian. Even though si means are/have depending on context, here it is part of the perfect tense construction, not a separate full verb like English are.

Because the sentence is addressed to a female person.

Serbian past participles agree with the gender of the subject:

• napisao = a man wrote / you wrote (to a man)
• napisala = a woman wrote / you wrote (to a woman)

So:

• Da li si tačno napisala njenu adresu? = speaking to one woman
• Da li si tačno napisao njenu adresu? = speaking to one man

This is something English does not show, so it often stands out to English-speaking learners.

It is the perfect tense, which is the normal way to talk about completed past actions in Serbian.

It is built with:

• a form of biti (to be)
• plus the past participle

Here:

• si = you have / you did part
• napisala = written

Together, si napisala means you wrote or you have written, depending on context. In natural English, this sentence is usually translated as Did you write her address correctly?

Both words are in the accusative case, because they are the direct object of the verb napisati (to write down / write).

Base forms:

• njena adresa = her address (nominative)
• njenu adresu = her address (accusative)

Why both change:

• njena → njenu
• adresa → adresu

This is a very common pattern with feminine nouns ending in -a.

The difference is grammatical case.

• njena adresa = nominative, used when it is the subject
  
  • Njena adresa je dugačka. = Her address is long.
• njenu adresu = accusative, used when it is the direct object
  
  • Napisala je njenu adresu. = She wrote her address.

English usually does not change the form of her address, but Serbian does.

Here tačno means correctly, accurately, or exactly right.

So the sentence is asking whether the address was written without mistakes.

Depending on context, tačno can mean:

• exactly
• precisely
• correctly

In this sentence, correctly/accurately is the most natural meaning.

Yes.

Without tačno, the sentence becomes:

• Da li si napisala njenu adresu?

That simply means:

• Did you write her address?

With tačno, the focus changes:

• Da li si tačno napisala njenu adresu?
• Did you write her address correctly/exactly?

So tačno adds the idea of accuracy, not just whether the action happened.

Yes. This is an important Serbian verb pair.

• pisati = to write (imperfective)
• napisati = to write down / to finish writing (perfective)

In this sentence, napisala comes from napisati, which suggests a completed action: the address got written.

Compare:

• Pisala si adresu. = You were writing / wrote the address (more about the process, depending on context)
• Napisala si adresu. = You wrote down the address / finished writing it

Since the sentence asks about whether the address was written correctly, the perfective verb is very natural.

Yes. In everyday Serbian, yes/no questions can also be formed by intonation, and sometimes by putting the verb first.

For example:

• Jesi li tačno napisala njenu adresu?
• Si tačno napisala njenu adresu? (more colloquial in some contexts)

But Da li si tačno napisala njenu adresu? is very standard and clear, especially for learners.

A useful pattern to remember is:

• Da li + clitic/verb + rest of sentence

Njenu means her, referring to some female person already known from context.

So:

• njenu adresu = her address

By itself, Serbian does not tell you which woman her refers to; context does that, just like in English.

Also, learners sometimes confuse:

• njenu adresu = her address
• njegovu adresu = his address

So the pronoun must match the person being referred to.

It is informal singular, because si shows you are speaking to one person using ti.

So this is something you would say to:

• a friend
• a family member
• a child
• someone you address informally

If you were speaking formally to one person, you would use ste and usually a plural participle:

• Da li ste tačno napisali njenu adresu?
  when speaking formally to a man, or in standard polite usage
• Da li ste tačno napisale njenu adresu?
  if addressing several women

In polite singular, napisali is commonly used regardless of the woman’s gender in many standard contexts because it agrees with Vi as grammatical plural.

A simple pronunciation guide is:

• Da li si tačno napisala njenu adresu?
• roughly: DA lee see TACH-noh nah-PEE-sah-lah NYEH-noo AH-dreh-soo

A few useful notes:

• č sounds like ch in church
• nj sounds like ny in canyon
• stress is not usually marked in normal writing, so learners typically pick it up through listening

The important sounds here are:

• tačno → the č
• njenu → the nj
• adresu → clear vowels, each one pronounced

To a certain extent, yes, but not all versions sound equally natural.

The most neutral version is:

• Da li si tačno napisala njenu adresu?

You may also hear different emphasis, for example:

• Da li si njenu adresu tačno napisala?
  This puts more focus on her address

But for learners, the original order is the best one to copy first.

Serbian word order is more flexible than English, but it is not random. Changes in order often change emphasis rather than basic meaning.