Moj brat voli smešne filmove.

• moj = my
• brat = brother
• voli = likes / loves
• smešne = funny
• filmove = films / movies

Grammatically:

• Moj brat is the subject: my brother
• voli is the verb: likes
• smešne filmove is the direct object: funny films

So the structure is basically:

[subject] + [verb] + [object]

Because moj has to agree with brat.

Brat is:

• masculine
• singular
• nominative (because it is the subject)

So the correct form is moj.

Compare:

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

This kind of agreement is very important in Serbian: possessives and adjectives change form to match the noun.

Because Serbian usually does not need a subject pronoun when the subject is already clear.

In English, you often need to say:

• My brother likes funny films
• or He likes funny films

In Serbian, once you say moj brat, there is no need to add on (he).

You could say:

Moj brat, on voli smešne filmove

but that usually sounds emphatic, contrastive, or a bit unnecessary in a neutral sentence.

So the normal version is simply:

Moj brat voli smešne filmove.

Because filmove is in the accusative plural, not the nominative plural.

The noun filmovi is the dictionary-style plural subject form:

• filmovi = films as a subject

But in this sentence, films is the direct object of voli, so Serbian uses the accusative:

• filmovi = nominative plural
• filmove = accusative plural

Compare:

• Filmovi su smešni. = The films are funny.
  Here filmovi is the subject.

• Moj brat voli smešne filmove. = My brother likes funny films.
  Here filmove is the object.

Because the adjective must agree with the noun in:

• gender
• number
• case

Since filmove is masculine plural accusative, the adjective also has to be in the matching form:

• smešne filmove = accusative plural
• smešni filmovi = nominative plural

Compare:

• Smešni filmovi su popularni. = Funny films are popular.
  Subject form: smešni filmovi

• Volim smešne filmove. = I like funny films.
  Object form: smešne filmove

This is one of the big differences from English: adjectives change form depending on grammar.

It can mean both, depending on context.

The verb is voleti. In Serbian, this verb can cover both:

• to like
• to love

In a sentence about films, voli is usually best understood as likes:

Moj brat voli smešne filmove = My brother likes funny films

If the object were a person, it might more naturally mean loves:

• Voli svoju porodicu. = He loves his family.

So context tells you which English translation fits best.

The base form is voleti = to like / to love.

Voli is:

• 3rd person singular
• present tense

A quick present-tense pattern:

• ja volim = I like
• ti voliš = you like
• on/ona/ono voli = he/she/it likes
• mi volimo = we like
• vi volite = you (plural/formal) like
• oni/one/ona vole = they like

So voli matches moj brat because my brother is he, third person singular.

There is no article in Serbian.

Serbian does not have words exactly like English a/an and the.

So:

• brat can mean a brother, the brother, or just brother, depending on context
• filmove can mean films, the films, or sometimes some films, depending on context

In this sentence, English naturally translates it as:

My brother likes funny films

but Serbian does not need an article to express that.

Context usually makes the meaning clear.

Yes. Serbian word order is more flexible than English because cases show what each word is doing.

The neutral, most straightforward order is:

Moj brat voli smešne filmove.

But other orders are possible for emphasis, contrast, or style, for example:

• Smešne filmove moj brat voli.
• Voli moj brat smešne filmove.

These do not usually change the basic meaning, but they can change the focus.

For a learner, it is best to start with the neutral order:

subject + verb + object

A rough pronunciation is SMESH-neh.

Helpful notes:

• š sounds like English sh
• e is a clear eh sound
• Serbian spelling is quite phonetic, so words are usually pronounced close to how they are written

So:

• smešne sounds roughly like SMESH-neh
• filmove sounds roughly like FEEL-moh-veh

Also, Serbian stress is not marked in normal writing, so learners usually pick it up by listening.

Yes. Serbian uses both Latin and Cyrillic scripts.

The same sentence in Cyrillic is:

Мој брат воли смешне филмове.

The meaning and grammar are exactly the same. Only the script changes.

Letter matches here are:

• Moj → Мој
• brat → брат
• voli → воли
• smešne → смешне
• filmove → филмове

A learner of Serbian should get used to both scripts, even if one is used more often at first.