Przedsiębiorca ma sklep internetowy.

This is a very common point of confusion.

Przedsiębiorca is a masculine noun, even though it ends in -a, which often signals a feminine noun in Polish. Polish has a small group of masculine personal nouns like this, especially for professions or roles.

So in this sentence:

• przedsiębiorca = masculine, singular, nominative
• it means entrepreneur / business owner

A female-specific form also exists: przedsiębiorczyni.

Ma means has.

It comes from the verb mieć = to have.

So:

• ja mam = I have
• ty masz = you have
• on / ona / ono ma = he / she / it has

In the sentence Przedsiębiorca ma sklep internetowy, ma is the 3rd person singular form, because the subject is przedsiębiorca.

Polish does not have articles like English a, an, or the.

So:

• sklep internetowy can mean an online store, a webshop, or sometimes the online store, depending on context.

You understand whether it is definite or indefinite from the situation, not from an article.

In this sentence:

• przedsiębiorca is in the nominative case, because it is the subject
• sklep internetowy is in the accusative case, because it is the direct object of ma

So the structure is:

• [Subject in nominative] + [verb] + [object in accusative]

That gives:

• Przedsiębiorca (nominative)
• ma
• sklep internetowy (accusative)

Because sklep is a masculine inanimate noun.

For masculine inanimate singular nouns, the accusative is usually the same as the nominative.

So:

• nominative: sklep
• accusative: sklep

That is why after ma you still see sklep, not a different form.

Because the adjective must agree with the noun it describes.

Here, sklep is:

• masculine
• singular
• accusative (but for masculine inanimate, it looks like nominative)

So the adjective also takes the matching masculine singular form:

• internetowy = online / internet-based

Examples of agreement:

• sklep internetowy = masculine singular
• firma internetowa = feminine singular
• konto internetowe = neuter singular

The ending changes to match the noun.

Many learners expect the adjective to come first, because Polish often does that:

• duży dom = big house
• nowy samochód = new car

But with some more classifying or technical expressions, Polish often uses noun + adjective.
Sklep internetowy is a very standard and natural phrase meaning online store.

So while adjective position in Polish is somewhat flexible, here sklep internetowy is the normal, idiomatic order.

Yes, you may hear or see internetowy sklep, but sklep internetowy is the more standard fixed expression for online store.

Putting internetowy first can sound more marked, more descriptive, or more stylistic depending on context.

For a learner, the safest version is:

• sklep internetowy

No. In Polish, subject pronouns are often omitted when they are not needed.

So instead of saying:

• On ma sklep internetowy = He has an online store

you can simply say:

• Przedsiębiorca ma sklep internetowy

The noun przedsiębiorca already tells you who the subject is, so no pronoun is necessary.

It is a bit tricky because it has several consonant clusters.

A rough guide is:

przed-sye-BYOR-tsa

A few helpful points:

• rz here sounds like the Polish ż
• się sounds roughly like shye / sye depending on how detailed you want to be
• -ca sounds like tsa

You do not need a perfect English-style approximation right away. This is one of those words that becomes easier after hearing it a few times.

It can cover both ideas depending on context.

Przedsiębiorca is a broad word for a person engaged in business activity. In English, possible translations include:

• entrepreneur
• business owner
• businessperson

So the exact English wording may change, even though the Polish sentence stays the same.

It is a perfectly normal and grammatical sentence.

Its structure is very straightforward:

• Przedsiębiorca = subject
• ma = verb
• sklep internetowy = object

So it is a good model sentence for learning basic Polish word order and case use.