Veřejná podpora je významná.

Because they both agree with podpora, which is a feminine singular noun.

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

• gender
• number
• case

Here:

• podpora = feminine singular
• so veřejná = feminine singular form of veřejný (public)
• and významná = feminine singular form of významný (significant / important)

So the pattern is:

• masculine: veřejný, významný
• feminine: veřejná, významná
• neuter: veřejné, významné

It is in the nominative case.

This sentence is a basic X is Y structure:

• Veřejná podpora = the subject
• je významná = the predicate

The subject of a Czech sentence is normally in the nominative, and predicate adjectives also appear in nominative form:

• podpora → nominative singular
• veřejná → nominative singular feminine
• významná → nominative singular feminine

In normal present-tense Czech, je (is) is usually expressed.

So:

• Veřejná podpora je významná. = natural and standard

Unlike some Slavic languages, Czech normally does not omit the present tense of být (to be) in ordinary statements like this.

You may sometimes see omission in:

• headings
• notes
• slogans
• very compressed style

But in full standard prose, je is expected.

Yes. Czech word order is fairly flexible, but changing it can change the focus or emphasis.

Neutral order:

• Veřejná podpora je významná.

Possible alternatives:

• Významná je veřejná podpora.
• Je významná veřejná podpora.

These are grammatically possible, but they sound more marked and may emphasize different parts of the sentence.

For a learner, the original version is the safest and most natural neutral wording.

It can mean either, depending on context.

The adjective významný / významná / významné often means:

• significant
• important
• notable

So in context, Veřejná podpora je významná could be understood as:

• public support is significant
• public support is important

Czech významný often overlaps with both English words.

Veřejná means public.

It comes from the adjective veřejný, which can refer to something:

• belonging to the public
• open to the public
• relating to public life or society

Because it modifies podpora (a feminine noun), it takes the feminine form:

• veřejný → masculine
• veřejná → feminine
• veřejné → neuter

Yes, podpora is feminine.

A very common clue is the ending -a, which often marks a feminine noun in Czech:

• podpora
• škola
• otázka

This is not an absolute rule, but it is a very useful beginner pattern.

Because podpora is feminine singular, any adjective describing it must also be feminine singular:

• veřejná podpora
• významná podpora

The hardest part for many learners is ř, a special Czech sound.

A rough guide:

• veřejná sounds approximately like veh-RZHAY-nah
• the ř is something like a mix between r and zh (the sound in measure)

Important notes:

• ř is unique to Czech and takes practice
• don’t worry if you cannot produce it perfectly at first
• a rolled or tapped r is often a reasonable learner approximation early on

Also note the long vowel:

• á is pronounced longer than a

So -ná is held a little longer than a short na.

Czech has no articles.

So Czech does not directly distinguish:

• a public support
• the public support
• just public support

The exact meaning depends on context.

In this sentence, Veřejná podpora je významná, English may need an article or may not, depending on the broader context:

• Public support is significant
• The public support is significant

Czech leaves that unstated unless context makes it clear.

Yes. That would also be correct, but the nuance is slightly different.

• významná = significant, important, notable
• důležitá = important

So:

• Veřejná podpora je významná may suggest that public support is significant in scale, effect, or relevance
• Veřejná podpora je důležitá more directly says it is important

In many contexts, both are possible, but they are not always perfectly interchangeable.

Because this is a normal declarative sentence, and Czech uses a period just like English.

So:

• Veřejná podpora je významná.

Punctuation here works very similarly to English:

• statement → period
• question → question mark
• exclamation → exclamation mark

Nothing unusual is happening in this sentence.