Potvrzení o pojištění ukazuje pojistný limit.

Literally, potvrzení means confirmation. In administrative or insurance language, though, it often refers to a document that confirms something, so English may use certificate, proof, or confirmation document.

So in this sentence, potvrzení o pojištění is best understood as an insurance document, not just the abstract idea of confirming something.

Potvrzení is a neuter noun. It belongs to a very common type of Czech noun formed from verbs, often ending in -ní or -tí, such as:

• potvrdit → potvrzení
• pojistit → pojištění

Here it is singular, not plural. A learner might expect an -í ending to be plural because of patterns in other languages, but in Czech that ending is very common in singular neuter nouns of this type.

The preposition o normally takes the locative case and often means about, regarding, or concerning.

So potvrzení o pojištění is literally something like confirmation regarding insurance. In natural English, that often becomes certificate of insurance or proof of insurance.

This is a standard Czech way to name documents:

• potvrzení o studiu = confirmation/certificate of study
• doklad o zaplacení = proof of payment

It does change case grammatically, but not always visibly.

After o, pojištění is in the locative singular. The thing that can confuse learners is that for this type of neuter noun, the nominative, accusative, and locative singular often look exactly the same.

So in this sentence:

• pojištění after o = locative singular
• it just happens to have the same form as the dictionary form

Usually no, not for this meaning.

If you want certificate/proof of insurance, the normal phrase is potvrzení o pojištění. Without o, the phrase sounds odd or incomplete to most speakers.

So this is one of those combinations that is best learned as a set phrase:

• potvrzení o pojištění

Ukazuje is the 3rd person singular present form of ukazovat.

It is singular because the subject is potvrzení o pojištění, which is singular.

So:

• potvrzení ... ukazuje = the certificate ... shows

Also, Czech often uses the imperfective verb ukazovat for general statements like this:

• a document shows
• a chart shows
• a screen shows

If you used the perfective ukáže, it would usually sound more like will show or will reveal in a specific situation.

Here, pojistný limit is the direct object, so it is in the accusative singular.

But it looks the same as the nominative because:

• limit is a masculine inanimate noun
• masculine inanimate nouns often have the same form in nominative and accusative singular
• the adjective agrees with it, so pojistný also keeps the same-looking ending

So grammatically it is accusative, even though the form does not change visibly.

They are related, but they are different parts of speech:

• pojištění = insurance (noun)
• pojistný = insurance-related / insured / policy-related (adjective)

So:

• potvrzení o pojištění = a certificate/document about insurance
• pojistný limit = insurance limit / coverage limit / policy limit

A useful way to think about it is:

• pojištění names the thing
• pojistný describes another noun as connected with insurance

Czech does not use articles like English a and the.

So Potvrzení o pojištění ukazuje pojistný limit can mean:

• The certificate of insurance shows the policy limit
• A certificate of insurance shows the/a policy limit

Which one sounds best depends on context. Czech leaves that to the situation instead of marking it with articles.

This is a very good question, because the forms do not make it completely obvious on their own.

In this sentence, the main clues are:

• normal Czech word order: subject + verb + object
• meaning/context: a document can show a limit more naturally than a limit can show a document

So the default reading is:

• potvrzení o pojištění = subject
• ukazuje = verb
• pojistný limit = object

Because both nouns can look like nominative/accusative forms, word order and context matter a lot here. If you changed the order, the sentence could become harder to interpret.

Czech stress normally falls on the first syllable of each word group.

A simple stress guide would be:

• POtvrzení
• o POjištění
• Ukazuje
• POjistný
• LImit

A rough pronunciation guide for an English speaker:

• potvrzení = po-tvr-ze-nee
• o pojištění = o po-yish-tye-nee
• ukazuje = oo-ka-zoo-ye
• pojistný = po-yist-nee
• limit = li-mit

Two useful details:

• Czech j sounds like English y
• š sounds like English sh