Sklep internetowy wyjaśnia prawo do odstąpienia.

Both word orders are possible in Polish, but sklep internetowy is the most neutral, dictionary-like way to say online shop.

• sklep = shop/store
• internetowy = internet/online

In Polish, adjectives can come before or after the noun, but in many standard labels and classifications, the noun + adjective pattern sounds very natural:

• sklep internetowy
• język polski
• prawo cywilne

If you say internetowy sklep, it is still understandable, but it may sound a bit more contrastive or stylistically marked depending on context.

Because it has to agree with sklep.

In Polish, adjectives change their endings to match the noun in:

• gender
• number
• case

Here:

• sklep is masculine singular
• so the adjective also takes the masculine singular nominative form: internetowy

Examples:

• sklep internetowy — masculine singular
• strona internetowa — feminine singular
• prawo internetowe — neuter singular

So internetowy is simply the matching adjective form for sklep.

Wyjaśnia is the 3rd person singular present tense form of the verb wyjaśniać.

So it means:

• he/she/it explains
• and here, since the subject is sklep internetowy, it means the online shop explains

Breakdown:

• infinitive: wyjaśniać = to explain
• ja wyjaśniam = I explain
• ty wyjaśniasz = you explain
• on/ona/ono wyjaśnia = he/she/it explains

Because sklep is grammatically masculine singular, Polish uses the same verb form as for he/it: wyjaśnia.

Prawo is in the accusative singular, because it is the direct object of wyjaśnia.

The verb wyjaśniać usually takes a direct object:

• wyjaśniać coś = to explain something

So here:

• Sklep internetowy = subject
• wyjaśnia = verb
• prawo = object

A useful detail: prawo is a neuter noun, and in neuter singular, the nominative and accusative forms are the same. So:

• nominative: prawo
• accusative: prawo

That is why you do not see any ending change here.

Because Polish uses the fixed pattern prawo do + noun in the genitive to mean the right to ...

So:

• prawo do reklamacji = the right to make a complaint
• prawo do zwrotu = the right to a return
• prawo do odstąpienia = the right to withdraw/cancel

Using do is standard and necessary here.
Without do, the phrase would sound wrong or incomplete in normal Polish.

Because after the preposition do, Polish uses the genitive case.

The base form is:

• odstąpienie = withdrawal / cancellation / rescission

After do, it changes to genitive:

• do odstąpienia

This is a very common pattern:

• prawo do pracy
• klucz do domu
• zaproszenie do udziału
• prawo do odstąpienia

So the ending changes because of grammar, not because the meaning changes.

In this kind of sentence, odstąpienie is legal/consumer vocabulary. It usually means withdrawing from a contract, especially in distance selling or online purchases.

So in everyday English, depending on context, it may correspond to:

• withdrawal
• cancellation
• rescission
• sometimes the practical idea of returning goods within the legal period

In consumer-law language, prawo do odstąpienia is a very common phrase.

Yes. Wyjaśniać is the imperfective verb.

That matters because imperfective present tense usually describes:

• a general fact
• a repeated action
• an ongoing process

So this sentence sounds like:

• the online shop explains this as part of its information
• the online shop provides an explanation

The perfective partner is wyjaśnić. Its future form would be:

• wyjaśni = will explain / explain completely

Compare:

• Sklep wyjaśnia prawo do odstąpienia. = The shop explains the right of withdrawal.
• Sklep wyjaśni prawo do odstąpienia. = The shop will explain the right of withdrawal.

Yes, Polish word order is more flexible than English because case endings show grammatical relationships.

The neutral order here is:

• Sklep internetowy wyjaśnia prawo do odstąpienia.

But other orders are possible for emphasis, for example:

• Prawo do odstąpienia wyjaśnia sklep internetowy.
• Prawo do odstąpienia sklep internetowy wyjaśnia.

These alternatives are grammatically possible, but they sound more marked and would usually be used only in a special context. For a learner, the original order is the safest and most natural.

Because Polish has no articles.

So:

• sklep can mean a shop or the shop
• prawo can mean a right or the right

You understand whether it is a or the from context.

That is why Sklep internetowy wyjaśnia prawo do odstąpienia does not need separate words for the.

A rough English-friendly guide:

• wyjaśnia ≈ vih-YASH-nya
• odstąpienia ≈ ot-stom-PYE-nya

A few pronunciation notes:

• wy- often sounds roughly like vih or vɨ
• ś is a soft sh-like sound
• ą before some consonants is often pronounced somewhat like om/on
• ń is a soft ny sound

So:

• wyjaśnia has a soft śn sequence
• odstąpienia has the nasal vowel ą and the soft ni/ń sound near the end

Yes, it is very natural and common.

Other possibilities exist, such as:

• sklep online
• e-sklep

But sklep internetowy is standard, clear, and widely used, especially in formal or informational language.

So for learners, it is an excellent phrase to remember.