Ubezpieczony ma polisę i płaci składkę ubezpieczeniową.

It is originally an adjective meaning insured, but here it is being used like a noun, so it means the insured person or the policyholder/insured depending on context.

In this sentence, ubezpieczony is:

• masculine
• singular
• nominative case, because it is the subject of the sentence

Related forms:

• ubezpieczona = an insured woman
• ubezpieczeni = insured people (mixed group or masculine personal)
• ubezpieczone = insured people/things in some non-masculine-personal contexts

So this is a very common Polish pattern: an adjective can function as a noun.

Because the verb ma (has) takes the accusative case for its direct object.

The basic dictionary form is:

• polisa = policy

But after ma, it changes to the accusative singular:

• ma polisę = has a policy

This happens because polisa is a feminine noun ending in -a, and many such nouns change:

• nominative: polisa
• accusative: polisę

For the same reason: płaci (pays / is paying) takes a direct object in the accusative.

Dictionary forms:

• składka = premium / contribution
• ubezpieczeniowa = insurance-related

In the sentence, both words must agree in case, gender, and number:

• nominative: składka ubezpieczeniowa
• accusative: składkę ubezpieczeniową

So:

• płaci składkę ubezpieczeniową = pays an insurance premium

The adjective changes because Polish adjectives must match the noun they describe.

The sentence uses mainly two cases:

• Nominative for the subject:

  • Ubezpieczony = the insured person

• Accusative for the direct objects:

  • polisę
  • składkę ubezpieczeniową

So the structure is:

• Ubezpieczony = subject, nominative
• ma polisę = verb + object in accusative
• płaci składkę ubezpieczeniową = verb + object in accusative

It can mean either, depending on context.

Polish present tense often covers both:

• he pays
• he is paying

So:

• Ubezpieczony płaci składkę ubezpieczeniową can mean:
  • The insured pays the insurance premium
  • The insured is paying the insurance premium

Very often, without extra context, it sounds like a general or habitual statement: pays.

Because Polish does not have articles like English a/an and the.

So:

• ma polisę can mean has a policy or has the policy
• płaci składkę ubezpieczeniową can mean pays an insurance premium or pays the insurance premium

You understand which one is meant from context.

This is one of the biggest differences from English.

They are related, but not the same.

• polisa = policy, the document/contract
• ubezpieczenie = insurance, the insurance coverage/system/product

Examples:

• Mam polisę. = I have a policy.
• Mam ubezpieczenie. = I have insurance.

So in this sentence, polisę refers to the policy itself, not the general idea of insurance.

Yes. Polish word order is much more flexible than English because case endings show grammatical roles.

The neutral order here is:

• Ubezpieczony ma polisę i płaci składkę ubezpieczeniową.

But other orders are possible for emphasis, for example:

• Polisę ma ubezpieczony i płaci składkę ubezpieczeniową.
• Składkę ubezpieczeniową płaci ubezpieczony.

These alternatives are grammatical, but they change the emphasis or sound less neutral.

For learners, the original sentence is the safest, most standard order.

A few useful pronunciation points:

• ubezpieczony
  • cz sounds like English ch in chop
• płaci
  • ł is pronounced like English w
• polisę, składkę
  • ę is a nasal vowel, but in normal speech at the end of a word it is often pronounced less strongly, sometimes almost like e with nasal coloring
• ubezpieczeniową
  • niow here flows together; Polish consonant groups often take practice

A few rough pronunciation hints:

• ubezpieczony ≈ oo-bez-pye-CHO-nih
• płaci ≈ PWA-chee
• polisę ≈ po-LEE-sen / po-LEE-se
• składkę ≈ SKWAT-ken / SKWAT-ke
• ubezpieczeniową ≈ oo-bez-pye-che-NYO-von

These are only approximations, but they can help at first.

No. In this sentence it is masculine singular, but the form changes depending on who is being referred to.

Examples:

• Ubezpieczony ma polisę. = The insured man/person has a policy.
• Ubezpieczona ma polisę. = The insured woman has a policy.
• Ubezpieczeni mają polisy. = The insured people have policies.

So the form must match the gender and number of the person or people involved.

Polish often uses adjectives where English may use a noun modifier.

English:

• insurance premium

Polish:

• składka ubezpieczeniowa
  • literally: premium insurance-related

This is very common in Polish. Instead of stacking nouns, Polish often uses an adjective derived from a noun:

• ubezpieczenie = insurance
• ubezpieczeniowy / ubezpieczeniowa / ubezpieczeniowe = insurance-related

So składka ubezpieczeniowa is the natural Polish way to say insurance premium.

Yes. That would mean pays insurance premiums in the plural.

Compare:

• płaci składkę ubezpieczeniową = pays an insurance premium / one premium installment
• płaci składki ubezpieczeniowe = pays insurance premiums

The singular is fine if you are talking about one payment or speaking generically about the premium as a type of payment. The plural is common when talking about regular repeated payments.

The main dictionary forms are:

• ubezpieczony = insured
• mieć = to have
• polisa = policy
• i = and
• płacić = to pay
• składka = premium / contribution
• ubezpieczeniowy = insurance-related

In the sentence, some words appear in changed forms because of grammar:

• ma from mieć
• polisę from polisa
• płaci from płacić
• składkę from składka
• ubezpieczeniową from ubezpieczeniowy

It can do either, depending on context.

Most naturally, it sounds like a general statement:

• The insured has a policy and pays the insurance premium.

But it could also describe a current situation:

• The insured has a policy and is paying the insurance premium.

Polish present tense does not force the same distinction that English often does between simple present and present continuous. Context tells you which one is intended.