Jutro kupimy jajka, cebulę, pomidory i ziemniaki na weekend.

In Polish, subject pronouns are often omitted because the verb ending already shows who is doing the action.

• kupimy = we will buy
• the ending -my tells you it is we

So Jutro kupimy... naturally means Tomorrow we will buy... without needing my.

You can add my for emphasis, but it is usually unnecessary:

• Jutro kupimy jajka... = neutral
• My jutro kupimy jajka... = We will buy the eggs tomorrow

Polish word order is more flexible than English word order because grammatical endings carry a lot of information.

Putting jutro first emphasizes the time:

• Jutro kupimy jajka... = Tomorrow we’ll buy eggs...
• Kupimy jutro jajka... is also possible, but it sounds different in emphasis

Beginning with jutro is very natural when you want to set the time frame first.

Kupimy is the 1st person plural future form of kupić.

So:

• kupić = to buy
• kupimy = we will buy

This verb is perfective, which means it presents the action as a completed whole. In practice, kupimy means we’ll buy / we are going to buy.

Polish has two common ways to talk about the future:

1. Perfective verb future:

   • kupimy = we will buy

2. Imperfective future:

   • będziemy kupować = we will be buying / we will buy

The sentence uses kupimy because it focuses on the completed result: the shopping will get done.

A native English speaker may not always feel a big difference in translation, but in Polish the aspect matters:

• kupimy = we will buy them, as a completed action
• będziemy kupować = we will be in the process of buying / buying repeatedly / with focus on the activity

Because kupić takes a direct object, and direct objects in Polish often go into the accusative case.

In this sentence, the things being bought are direct objects:

• jajka
• cebulę
• pomidory
• ziemniaki

So the learner naturally asks: why do only some of them look different? The answer is that some accusative forms are identical to the nominative, while others change.

Because cebula is a feminine noun, and feminine nouns often change in the accusative singular.

• dictionary form: cebula = onion
• accusative singular: cebulę

Since it is the object of kupimy, Polish uses the accusative:

• Kupimy cebulę. = We will buy an onion.

This is a very common pattern:

• mam kawę from kawa
• widzę kobietę from kobieta
• kupuję cebulę from cebula

Their accusative forms here look the same as their nominative forms.

That is very common in Polish, especially with:

• many inanimate masculine plural nouns
• many neuter plural nouns

So in this sentence:

• jajka = nominative plural / accusative plural
• pomidory = nominative plural / accusative plural
• ziemniaki = nominative plural / accusative plural

Even though they are objects and therefore in the accusative, the form happens to stay the same.

Here are the basic forms:

• jajko = egg
• cebula = onion
• pomidor = tomato
• ziemniak = potato

And the forms used in the sentence are:

• jajka = plural of jajko
• cebulę = accusative singular of cebula
• pomidory = plural of pomidor
• ziemniaki = plural of ziemniak

Because jajko is the normal everyday word for egg, and its plural is jajka.

• jajko → jajka

The form jaja does exist, but it is not the usual neutral word you would use for buying eggs in an ordinary sentence. It can sound different stylistically and can also have other meanings or associations in colloquial language.

So for grocery-shopping Polish, jajka is the normal choice.

Because the speaker is talking about one onion but multiple eggs, tomatoes, and potatoes.

Polish is simply matching the quantity intended:

• jajka = eggs
• cebulę = an onion
• pomidory = tomatoes
• ziemniaki = potatoes

If you wanted multiple onions, you could say:

• cebule = onions

So this is not a grammar rule about lists; it is just the chosen quantity.

Na weekend means for the weekend.

The preposition na here expresses purpose or intended time use:

• kupimy ... na weekend = we’ll buy ... for the weekend

So the groceries are being bought with the weekend in mind.

Because na and w do different things.

In this sentence:

• na weekend = for the weekend

That means the shopping is intended for that period.

By contrast, w weekend or more commonly w weekend / w ten weekend in colloquial usage can mean something more like during the weekend or at the weekend, depending on context and regional usage. But that is not the meaning here.

So:

• kupimy coś na weekend = buy something for the weekend
• not primarily buy something during the weekend

Here na takes the accusative case.

So weekend is in the accusative. However, with masculine inanimate nouns, the accusative singular often looks exactly like the nominative singular.

That is why you see:

• nominative: weekend
• accusative: weekend

Same form, different grammatical role.

Because in a simple list in Polish, just like in English, you normally do not put a comma before the final i (and).

So this is standard:

• jajka, cebulę, pomidory i ziemniaki

You separate the earlier items with commas, and the last item is introduced by i.

Yes. Grammatically, you could reorder the items in the list:

• Jutro kupimy ziemniaki, pomidory, jajka i cebulę na weekend.

That would still be correct. The original order is just a natural list order. Reordering may slightly change emphasis, but the grammar stays fine as long as the cases are correct.

The letter ę is one of the Polish nasal vowels.

In cebulę, final ę is often pronounced less strongly nasal than learners expect in careful spelling-based descriptions. In everyday speech, sentence-final -ę may sound somewhat like a nasalized e, and in fast speech it can sound closer to e for many speakers, though the spelling remains ę.

For learning purposes, it is enough to remember:

• cebulę is spelled with ę
• it marks the accusative singular form of cebula

Usually it is best understood as Tomorrow we’ll buy...

Because kupimy is a future form, the sentence straightforwardly refers to a future completed action. Depending on context, English might translate it in different natural ways:

• Tomorrow we’ll buy eggs...
• We’re buying eggs tomorrow...

But grammatically in Polish, it is clearly a future form.

No. That combination is not correct.

If you want a future form with będziemy, the main verb must be imperfective, not perfective.

Correct options are:

• Jutro kupimy jajka...
• Jutro będziemy kupować jajka...

But not:

• Jutro będziemy kupić jajka...

This is a very common learner mistake, because English uses will + verb, but Polish handles aspect differently.

Yes. It sounds natural and idiomatic.

It has several very typical features of everyday Polish:

• omitted subject pronoun
• flexible but natural word order
• perfective future verb
• accusative objects
• na weekend to mean for the weekend

So it is a good model sentence for practical spoken and written Polish.