Bevo un succo di ananas fresco.

Bevo is the first-person singular present tense of bere (to drink).

So bevo means:

• I drink
• or I am drinking

Italian often uses the simple present for both a general action and something happening right now. Context tells you which meaning is intended.

Italian usually drops subject pronouns when they are not needed.

The ending -o in bevo already tells you the subject is I, so io is unnecessary.

• Bevo un succo di ananas fresco. = normal, neutral
• Io bevo un succo di ananas fresco. = possible, but more emphatic, as in I’m the one drinking a fresh pineapple juice

Un is the masculine singular indefinite article, meaning a or an.

• succo = juice
• un succo = a juice

In Italian, drinks are often treated as countable in everyday speech when you mean one serving / one glass / one juice.

So un succo di ananas is a very natural way to say a pineapple juice.

Italian commonly uses di to show what something is made of or what kind it is.

So:

• succo di ananas = pineapple juice
• literally: juice of pineapple

This is a very common pattern:

• succo di mela = apple juice
• succo di arancia = orange juice
• succo di frutta = fruit juice

Because after di in this kind of expression, Italian usually gives the ingredient or type without an article.

So you say:

• succo di ananas
• not usually succo dell’ananas in this basic meaning

dell’ananas would sound more specific, like the pineapple’s juice or juice from the pineapple, which is not the normal way to name the drink.

Yes, you may also come across succo d’ananas.

Italian sometimes shortens di to d’ before a vowel. In this sentence, di ananas is perfectly correct and natural, and d’ananas can also be found.

For a learner, di ananas is a safe and clear form to use.

Fresco describes succo, not ananas.

So the idea is:

• un succo di ananas fresco = a fresh/chilled pineapple juice

The adjective agrees with succo, which is masculine singular, so the adjective is fresco.

If the noun were feminine, it would change:

• una bevanda fresca = a fresh drink

In Italian, many descriptive adjectives normally come after the noun.

So:

• un succo fresco
• un succo di ananas fresco

is the usual pattern.

Putting the adjective before the noun is sometimes possible, but it often changes the tone or sounds more literary, emotional, or unusual.
For this sentence, un fresco succo di ananas would not be the normal everyday choice.

It can suggest fresh, cool, or chilled, depending on context.

With a drink, fresco often gives the idea that it is pleasantly cool or refreshing. It does not always specifically mean freshly made.

So if you want to stress freshly prepared, Italian might use other wording too, depending on context.

Here is the basic breakdown:

• bevo = verb, first-person singular
• un = masculine singular article
• succo = masculine singular noun
• di ananas = prepositional phrase describing the type of juice
• fresco = masculine singular adjective

The important agreement is:

• un succo fresco

Both un and fresco match succo in gender and number.

Yes.

Bevo un succo di ananas fresco can mean either:

• I drink fresh pineapple juice (habitually / generally), or
• I am drinking a fresh pineapple juice (right now)

Italian often uses the present tense for both meanings. If you want to make right now extra clear, you can say:

• Sto bevendo un succo di ananas fresco. = I am drinking a fresh pineapple juice.

A simple pronunciation guide:

• Bevo → BEH-vo
• un → roughly oon
• succo → SOOK-ko
• di → dee
• ananas → AH-na-nahs
• fresco → FRES-ko

A useful detail: succo has a strong double cc, so it sounds like SOOK-ko, not SOO-ko.