Ja pijem kafu sa mlekom.

Serbian does not have articles. So kafu can mean coffee, a coffee, or the coffee, depending on context.

In Ja pijem kafu sa mlekom, the sentence is naturally understood as I drink coffee with milk or I am drinking coffee with milk.

Because kafu is the accusative singular form of kafa.

The verb pijem means I drink / I am drinking, and the thing being drunk is the direct object, so it goes into the accusative case.

• nominative: kafa = coffee
• accusative: kafu = coffee as the object of the verb

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

• kafa → kafu
• voda → vodu
• supa → supu

Because the preposition sa meaning with requires the instrumental case here.

The noun mleko is neuter, and its instrumental singular form is mlekom.

• nominative: mleko = milk
• instrumental: mlekom = with milk

So:

• sa mlekom = with milk

Sa and s are two forms of the same preposition, both meaning with.

Sa is often used when it is easier to pronounce, especially before certain consonants or consonant clusters. Since mlekom begins with ml-, sa mlekom sounds natural and standard.

So in this sentence, sa mlekom is the normal choice.

Not necessarily.

In Serbian, the verb ending often already shows who the subject is. Pijem already means I drink / I am drinking, so the sentence can simply be:

Pijem kafu sa mlekom.

Adding ja usually gives emphasis, contrast, or clarity:

• Ja pijem kafu sa mlekom. = I drink coffee with milk.
• This can imply contrast, like I drink coffee with milk, but someone else drinks it black.

So ja is correct, but often optional.

Pijem is the 1st person singular present tense of the verb piti = to drink.

It can mean either:

• I drink
• I am drinking

The exact meaning depends on context.

For example:

• Svako jutro pijem kafu sa mlekom. = Every morning I drink coffee with milk.
• Sad pijem kafu sa mlekom. = I am drinking coffee with milk now.

Yes. Serbian word order is more flexible than English word order.

A very neutral version would often be:

Pijem kafu sa mlekom.

Starting with Ja puts more focus on the subject:

Ja pijem kafu sa mlekom.

Other word orders are possible too, but they usually change the emphasis rather than the basic meaning.

So the meaning stays the same, but the focus can shift.

Yes. In this sentence, sa mlekom means with milk, in the sense that the coffee contains or is served with milk.

So kafa sa mlekom means coffee with milk.

It does not usually mean I am drinking coffee and also milk separately. The natural interpretation is that the milk goes with the coffee.

A helpful approximate pronunciation is:

• ja ≈ ya
• pijem ≈ PEE-yem

A fuller rough pronunciation of the sentence is:

ya PEE-yem KAH-foo sa MLEH-kom

A useful detail for English speakers: Serbian j is pronounced like English y in yes.

So:

• ja = ya
• pijem = pee-yem

Ja is the nominative form of the pronoun I.

It is the subject of the sentence, so nominative is the correct case.

Here is the case pattern in the sentence:

• ja = nominative, subject
• kafu = accusative, direct object
• mlekom = instrumental, after sa

This makes the sentence a nice example of how Serbian cases work together in one short sentence.