Příběh je o lásce.

Because the preposition o usually requires the locative case when it means about.

• basic form: láska = love
• after o: o lásce = about love

So in this sentence, láska changes to lásce because of Czech case grammar.

It is the locative singular.

In Czech, the locative is used mostly after certain prepositions. One very common pattern is:

• o + locative = about

So:

• o lásce = about love
• o příběhu = about a story
• o Praze = about Prague

This is the regular locative singular form of the noun láska.

A simplified way to see it:

• nominative: láska
• locative: lásce

The k changes to c before e, which is a normal sound/spelling change in Czech inflection.

So this is not random—you will see similar changes in other words too.

Je means is. It is the 3rd person singular form of být (to be).

So:

• Příběh je... = The story is...

Unlike in some other Slavic languages, Czech normally does use the present-tense form of to be, so you should not leave je out here.

Czech normally does not use articles like a or the.

So Příběh je o lásce can mean:

• The story is about love
• A story is about love

In real context, the listener understands which meaning is intended.

Here, English usually translates it as The story is about love because that sounds most natural in context.

Příběh is in the nominative singular because it is the subject of the sentence.

The structure is:

• Příběh = subject
• je = verb
• o lásce = prepositional phrase

So literally:

• Story is about love

With natural English:

• The story is about love

Not completely. Czech word order is more flexible than English because cases show grammatical roles.

The neutral, most natural order here is:

• Příběh je o lásce.

You could change the order for emphasis, but it may sound marked or literary, for example:

• O lásce je příběh.

That is much less neutral. For everyday learning, the original order is the best one to use.

In Czech, o is the normal preposition for talking about a topic.

So:

• mluvit o něčem = to talk about something
• kniha o historii = a book about history
• příběh o lásce = a story about love

In this sentence, o lásce means about love or concerning love.

A rough English-friendly guide is:

PZHEE-byekh yeh o LAAS-tseh

A few notes:

• ř in Příběh is a special Czech sound with no exact English equivalent.
• í and á are long vowels.
• ch in Příběh is like the ch in German Bach or Scottish loch.
• ce in lásce sounds like tseh.

You do not need perfect pronunciation immediately, but ř is one of the hardest Czech sounds for English speakers.

Yes. Since Czech has no articles, o lásce can mean either:

• about love
• about the love

The exact meaning depends on context. In this sentence, the broad meaning about love is the most natural.

No. Příběh je o láska is incorrect.

After o meaning about, Czech needs the locative, so you must say:

• o lásce

not:

• o láska

This is one of the most important habits to build in Czech: after a preposition, check which case it requires.