Compro il lievito al supermercato prima di preparare il pane.

In Italian, the subject pronoun is often omitted because the verb ending already shows who is doing the action.

• Compro = I buy
• The ending -o tells you the subject is I

So Compro il lievito... is completely natural.
You could say Io compro il lievito..., but io is usually added only for emphasis, contrast, or clarity.

For example:

• Compro il lievito. = I buy the yeast.
• Io compro il lievito, tu compri la farina. = I buy the yeast, you buy the flour.

Italian often uses the present tense for:

• habitual actions
• general statements
• near-future actions
• step-by-step descriptions

So Compro il lievito al supermercato prima di preparare il pane can mean something like:

• I buy yeast at the supermarket before making bread
• I’m buying yeast at the supermarket before making bread
• I buy the yeast before I prepare the bread

The exact time often depends on context.

Il lievito means the yeast.

Italian uses definite articles much more often than English does. So where English might say:

• I buy yeast

Italian often says:

• Compro il lievito

This does not always mean a very specific yeast in the English sense. It can also refer to the ingredient in a general way.

Here:

• il = the
• lievito = yeast / leavening agent

Not always. Lievito is a general word for a leavening agent, so its exact meaning depends on context.

It can refer to:

• yeast for bread-making
• baking powder
• other raising agents in some contexts

But because the sentence includes preparare il pane, most learners will naturally understand lievito here as yeast for bread.

Al is a combination of:

• a = to / at
• il = the

So:

• a + il = al

That means:

• al supermercato = at the supermarket / to the supermarket

Italian often uses an article with places where English might not focus on it as much.

Examples:

• Vado al supermercato. = I go to the supermarket.
• Sono al supermercato. = I’m at the supermarket.

Both can exist, but they are used differently.

• al supermercato usually means at the supermarket in a general location/destination sense
• nel supermercato means in the supermarket, emphasizing being inside it physically

In your sentence, al supermercato is the natural choice because it refers to where the buying happens, not specifically the physical interior.

So:

• Compro il lievito al supermercato = I buy yeast at the supermarket
• Compro il lievito nel supermercato sotto casa = I buy yeast in the supermarket downstairs / near my home

The second version sounds more spatially specific.

After prima followed by a verb, Italian normally uses di + infinitive.

So:

• prima di preparare = before preparing / before I prepare

This is a very common structure.

Examples:

• prima di uscire = before going out
• prima di mangiare = before eating
• prima di dormire = before sleeping

So in your sentence:

• prima di preparare il pane = before preparing the bread / before making bread

Yes. English often requires a more specific subject in some translations, but Italian can leave it more general with the infinitive.

So prima di preparare il pane can be understood as:

• before preparing the bread
• before making the bread
• before I prepare the bread

Usually the subject is understood to be the same as the subject of the main verb, which here is I.

Italian often uses the article where English may omit it.

So:

• il pane literally = the bread

But in many contexts, this is just the normal Italian way to refer to bread as the thing being prepared.

English often says:

• make bread

Italian commonly says:

• preparare il pane
• fare il pane

This does not necessarily mean one specific loaf already known to everyone. It can simply be the standard way of expressing the idea.

It is correct, but many Italians would also very naturally say:

• fare il pane

Both are possible:

• preparare il pane = to prepare the bread / to make bread
• fare il pane = to make bread

Preparare can sound a little more formal or more focused on the process of preparation, while fare is very common and everyday.

Yes, Italian word order is flexible, although some orders sound more neutral than others.

The sentence as given is very natural:

• Compro il lievito al supermercato prima di preparare il pane.

This goes roughly:

1. verb
2. object
3. place
4. time/sequence phrase

You could also say:

• Prima di preparare il pane, compro il lievito al supermercato.

This puts emphasis on before preparing the bread first. It is also very natural.

So the original order is neutral and straightforward, but other orders are possible for emphasis.

It can be either, depending on context.

It may describe:

• a routine: I buy yeast at the supermarket before making bread
• a current/near-future action: I’m buying yeast at the supermarket before making bread
• a general process: I buy the yeast before preparing the bread

Italian present tense is flexible, so context tells you which meaning is intended.

Yes, but the tone changes.

• compro = everyday, common, natural in speech
• acquisto = more formal, more written, sometimes more business-like

So in normal conversation, compro is the most natural choice.

Italian does not need helper verbs like English often does.

English may use:

• I buy
• I am buying
• I do buy

Italian usually expresses the main action directly with one verb form:

• compro

That single form carries the core meaning. Time and nuance come from context rather than from extra auxiliary words in many cases.

Yes, it can, depending on context. Because of il lievito, the sentence can refer to:

• the ingredient in a general sense
• a specific yeast already understood in the conversation

For example:

• If you are talking generally about bread-making, il lievito may just mean yeast as an ingredient.
• If you already mentioned a particular packet of yeast, then il lievito could mean that yeast.

Italian articles often do more work than English articles, so context is important.

Only the verb would need to change, unless you want to add the pronoun for emphasis.

Examples:

• Compri il lievito al supermercato prima di preparare il pane. = You buy yeast at the supermarket before making bread.
• Compriamo il lievito al supermercato prima di preparare il pane. = We buy yeast at the supermarket before making bread.

You could also add pronouns:

• Tu compri...
• Noi compriamo...

But again, pronouns are often omitted unless needed.

It is a simple sentence, but it contains several very useful Italian patterns:

• omitted subject pronoun: Compro
• article with a noun: il lievito
• contracted preposition: al
• place expression: al supermercato
• prima di + infinitive: prima di preparare
• article used with a general noun: il pane

So even though the sentence is not complicated, it is an excellent example of very common Italian grammar.