Moja sestra me čeka na stanici.

Because sestra is a feminine singular noun, and the possessive adjective moj has to agree with it in gender, number, and case.

So:

• moj brat = my brother
• moja sestra = my sister
• moje dete = my child

Here, sestra is feminine singular in the nominative, so the correct form is moja.

Sestra is the subject of the sentence, so it is in the nominative case, which is the basic dictionary form.

In Moja sestra me čeka na stanici:

• moja sestra = the subject, the person doing the action
• me = the object, the person being waited for

So sestra stays in nominative because my sister is the one who is waiting.

Because me is the short unstressed accusative form of the pronoun ja.

Compare:

• ja = I
• mene = me, longer/stressed form
• me = me, short unstressed form

The verb čekati takes a direct object, so you need the accusative. In a normal neutral sentence, Serbian usually prefers the short clitic form:

• Moja sestra me čeka. = My sister is waiting for me.

You would use mene for emphasis, contrast, or after certain prepositions, for example:

• Moja sestra čeka mene, a ne tebe. = My sister is waiting for me, not you.

Čeka is the 3rd person singular present tense form of čekati, meaning to wait.

So:

• ja čekam = I wait / I am waiting
• ti čekaš = you wait
• on/ona čeka = he/she waits

Since the subject is moja sestra = she, the verb form is čeka.

In this sentence, English naturally translates it as is waiting for me, even though Serbian simply uses the present tense.

Because in Serbian, čekati directly takes an object in the accusative case. English says wait for someone, but Serbian says literally wait someone.

So:

• Čekam te. = I’m waiting for you.
• Čekaju nas. = They’re waiting for us.
• Moja sestra me čeka. = My sister is waiting for me.

This is a very common thing for English speakers to notice: Serbian and English do not always use the same prepositions.

Because na here means at/on in the sense of location, and when na is used for location, it takes the locative case.

The noun stanica changes in the locative singular:

• nominative: stanica
• locative: stanici

So:

• na stanici = at the station

This is the normal pattern for many feminine nouns ending in -a:

• škola → u školi
• ulica → u ulici
• stanica → na stanici

In Serbian, certain places are simply used with certain prepositions by convention, and stanica commonly goes with na when you mean at the station.

So:

• na stanici = at the station

This does not always match English perfectly word-for-word. You just learn the natural combination.

A useful way to think of it is:

• na is often used for public places, surfaces, events, institutions, or set expressions
• u is often used for being inside something

But many expressions are fixed and must be learned as they are.

Formally, stanici can be both dative singular and locative singular for stanica, but here it is locative because it follows the preposition na in a location meaning.

So in this sentence:

• na stanici = locative, meaning at the station

You identify the case from the preposition + meaning, not only from the ending.

Yes, Serbian word order is more flexible than English word order, but not completely free.

The neutral sentence is:

• Moja sestra me čeka na stanici.

Other orders are possible depending on emphasis, for example:

• Na stanici me čeka moja sestra. = At the station, my sister is waiting for me.
• Me čeka moja sestra na stanici. = not possible as a normal sentence start, because me is a clitic and cannot usually stand first
• Čeka me moja sestra na stanici. = My sister is waiting for me at the station.

A key point: me is a clitic, so it usually goes near the beginning of the sentence, typically after the first stressed word or phrase.

A clitic is a short unstressed word that cannot usually stand on its own and prefers a specific position in the sentence.

In Serbian, pronouns like me, te, ga, je, nas, vas, ih are often clitics.

That is why:

• Moja sestra me čeka sounds natural.
• Me moja sestra čeka sounds wrong in normal usage.

So when you build Serbian sentences, remember that short pronouns often have special placement rules.

Yes, but it changes the feel of the sentence.

• Moja sestra me čeka na stanici. = neutral, natural
• Moja sestra mene čeka na stanici. = emphasized, like My sister is waiting for me or It’s me that my sister is waiting for

Use mene when you want stress, contrast, or emotional emphasis.

Usually na stanici means at the station.

Depending on context, English might sometimes interpret it as at the bus stop, at the train station, or more generally at the station/stop, because stanica can refer to different kinds of stations or stops.

If you wanted to be more specific, Serbian could say things like:

• na autobuskoj stanici = at the bus station / bus stop
• na železničkoj stanici = at the train station

So stanici by itself is somewhat general unless context makes it clear.

Yes, you could say Sestra me čeka na stanici if the context already makes it clear that you mean my sister.

Serbian often omits words that are obvious from context, but including moja is completely natural too.

Compare:

• Moja sestra me čeka na stanici. = My sister is waiting for me at the station.
• Sestra me čeka na stanici. = Sister is waiting for me at the station / My sister is waiting for me at the station, depending on context

So moja adds clarity or emphasis, but it is not always absolutely required.

Č is pronounced like the ch in church, but usually a bit firmer.

So:

• čeka sounds roughly like CHEH-ka

This is different from ć, which is softer. English speakers often confuse č and ć, but in standard Serbian they are different sounds.

Often, yes.

Serbian uses the present tense where English may use either:

• simple present: My sister waits for me at the station
• present continuous: My sister is waiting for me at the station

In this context, English naturally prefers is waiting. Serbian does not need a separate continuous form the way English does.

So čeka can correspond to either waits or is waiting, depending on context.

Here, me is accusative singular of the first-person pronoun.

The full set is:

• nominative: ja = I
• genitive: mene / me
• dative: meni / mi
• accusative: mene / me
• instrumental: mnom
• locative: meni

In this sentence, the verb čekati takes a direct object, so the object pronoun is in the accusative:

• me = me

Sometimes in context, yes, but the core meaning of čeka is still is waiting for.

So the safest translation is:

• My sister is waiting for me at the station.

If the situation is that she plans to meet you there, English might also say expecting me, but that is more interpretive than literal.