Si pasamos por la frutería, compraré plátanos y miel.

In Spanish, after si when you mean if, you normally use the present tense, not the future, for real or possible future situations.

So Spanish says:

• Si pasamos por la frutería, compraré plátanos y miel.

Literally, that is closer to:

• If we pass by the greengrocer’s, I will buy bananas and honey.

Even though it refers to the future, pasamos stays in the present tense. The future idea is shown by compraré.

This is very different from English, where learners often want to say something like si pasaremos, but that is not the normal pattern here.

Because it expresses what the speaker will do if the condition happens.

• compraré = I will buy

The structure is:

• Si + present tense, future tense

So:

• Si pasamos por la frutería, compraré plátanos y miel.

This is a very common pattern for likely future situations.

You could also hear a near-future version:

• Si pasamos por la frutería, voy a comprar plátanos y miel.

That also works, but compraré is a straightforward future form.

Here, pasar por means to pass by or to go via a place.

So:

• pasamos por la frutería = we pass by the greengrocer’s / we go by the fruit shop

It does not mean that you necessarily go inside. It just means your route takes you past that place.

Compare:

• Pasamos por la frutería. = We go past the fruit shop.
• Entramos en la frutería. = We go into the fruit shop.

So in this sentence, the idea is: if we happen to go past it, then I’ll buy those things.

Spanish often uses the definite article with shops and places more naturally than English does.

So:

• la frutería = the greengrocer’s / the fruit shop

Even when English might say if we pass by a fruit shop or just if we pass the fruit shop, Spanish commonly uses the article:

• por la frutería
• a la panadería
• en la farmacia

In context, la often refers to the relevant or known shop in the area, not necessarily a unique shop in the whole world.

Frutería is a fruit shop or greengrocer’s. In Spain, it usually refers to a shop that sells fruit and often vegetables as well.

It comes from:

• fruta = fruit
• -ería = a suffix often used for shops or places associated with something

Other examples:

• panadería = bakery
• carnicería = butcher’s
• pescadería = fishmonger’s

So frutería is a very natural Spain-Spanish word in this context.

Because Spanish often leaves out the article when talking about things in a general or indefinite quantity way, especially after verbs like comprar.

So:

• compraré plátanos y miel = I’ll buy bananas and honey

This sounds natural because the speaker means some bananas and some honey, not specific already-mentioned items.

If you added articles, the meaning would change slightly:

• compraré los plátanos y la miel = I’ll buy the bananas and the honey
  → specific ones already known in context

• compraré unos plátanos y miel
  → some bananas and honey

The version in your sentence is the most neutral and natural.

Yes, but plátanos is very common in Spain.

In Spain, plátano is the usual everyday word for the fruit you eat. Banana also exists, but speakers may use it differently depending on region, variety, or even the type of banana being referred to.

For a learner of Spanish from Spain, plátano is the safest and most natural basic word.

So:

• plátanos = bananas
• singular: plátano

The comma separates the if-clause from the main clause.

• Si pasamos por la frutería, compraré plátanos y miel.

The first part is the condition:

• Si pasamos por la frutería

The second part is the result:

• compraré plátanos y miel

This comma is standard and helps readability.

If the order is reversed, Spanish often does not use a comma:

• Compraré plátanos y miel si pasamos por la frutería.

Both are correct.

Yes. Spanish allows that very naturally.

Both of these are correct:

• Si pasamos por la frutería, compraré plátanos y miel.
• Compraré plátanos y miel si pasamos por la frutería.

The meaning stays basically the same.

The first version emphasizes the condition first.
The second version emphasizes the action first.

Good question. Pasar has many meanings, so context matters.

Here, because it is followed by por + place, it means:

• to pass by
• to go past
• to go via

So:

• pasamos por la frutería = we pass by the fruit shop

Other meanings of pasar include:

• pasar tiempo = to spend time
• pasar un examen = to pass an exam
• pasar algo a alguien = to pass something to someone

But in this sentence, pasar por clearly points to movement past a place.

Yes, si can mean if or whether, but here it clearly means if because it introduces a condition.

• Si pasamos por la frutería, compraré plátanos y miel.
  = If we pass by the fruit shop, I’ll buy bananas and honey.

For whether, you might see something like:

• No sé si pasamos por la frutería.
  = I don’t know whether we’re passing by the fruit shop.

So the word is the same, but the grammar and meaning of the whole sentence make the function clear.

Here, miel is being used as an uncountable noun, like honey in English.

So:

• compraré miel = I’ll buy honey

You normally would not count it directly as separate units unless you specify a container or quantity, for example:

• un tarro de miel = a jar of honey
• dos botes de miel = two jars of honey

That is why miel appears without an article here and sounds completely natural.

Not with the same meaning.

• pasar por la frutería = to pass by / go past the fruit shop
• pasar a usually means something different, depending on context, and would not be the normal choice here

If you mean go into the shop, you would more naturally say:

• Si entramos en la frutería, compraré plátanos y miel.

If you mean stop at the shop, you could also hear:

• Si paramos en la frutería, compraré plátanos y miel.

So por is the right preposition for passing by.

It is neutral and natural. Nothing in it is especially formal or especially informal.

It is an everyday sentence you could say in normal conversation.

The verb forms are standard:

• pasamos = we pass / we go by
• compraré = I will buy

So this works well in spoken and written Spanish.