Tato skupina potřebuje spolupráci.

Tato means this and it is the feminine singular nominative form of the demonstrative pronoun.

It has to agree with skupina, which is a feminine singular noun.

The basic forms of this are:

• ten for masculine
• ta / tato for feminine
• to / toto for neuter

So:

• tato skupina = this group
• not ten skupina, because skupina is feminine

Also, tato is a bit more formal or careful than ta. In everyday speech, people often say ta skupina or tahle skupina.

Skupina is in the nominative singular.

It is the subject of the sentence — the thing that needs something.

You can identify it by asking:

• Who needs cooperation?
• This group does.

So skupina stays in nominative, and tato matches it:

• tato skupina

Because it is the direct object of the verb potřebovat (to need), and direct objects usually go in the accusative.

The dictionary form is:

• spolupráce = cooperation, collaboration

But in this sentence, after potřebuje, it becomes:

• spolupráci = accusative singular

So:

• nominative: spolupráce
• accusative: spolupráci

This is a common pattern for many feminine nouns ending in -e.

Potřebuje is the 3rd person singular present tense form of potřebovat (to need).

So:

• já potřebuji / potřebuju = I need
• ty potřebuješ = you need
• on / ona / ono potřebuje = he / she / it needs

Since tato skupina is a singular subject, the verb must also be singular:

• Tato skupina potřebuje...

Even though a group contains many people, the noun group is grammatically singular, just like in English.

Potřebovat is generally treated as an imperfective verb.

That fits its meaning well, because to need usually describes a state, not a completed action.

So potřebuje here simply means:

• needs
• is needing in the general sense

Czech does not normally use a separate perfective partner for this verb the way it does for many action verbs.

Because Czech has no articles.

English says:

• this group needs cooperation
• the group needs cooperation
• a group needs cooperation

Czech does not use separate words for a or the.

Instead, Czech shows definiteness or specificity through:

• context
• word order
• demonstratives such as tato (this)

So tato skupina already clearly points to a specific group:

• this group

Yes. Czech word order is more flexible than English word order.

The neutral order here is:

• Tato skupina potřebuje spolupráci.

This is a straightforward subject – verb – object sentence.

But you could also say, for example:

• Spolupráci tato skupina potřebuje.

That puts more emphasis on spolupráci.

Even when the word order changes, the cases still show the roles:

• tato skupina = subject, nominative
• spolupráci = object, accusative

So meaning stays clear, but emphasis changes.

It can mean either, depending on context.

Spolupráce is a broad noun meaning:

• cooperation
• collaboration
• working together

In this sentence, cooperation is probably the most neutral translation.

If the context is about teams, institutions, or projects, collaboration could also fit well.

Yes, it is natural Czech.

It sounds like something you might see in:

• a textbook
• a report
• workplace communication
• a social or educational context

It means that the group needs people to work together, or needs cooperation from others.

Depending on context, Czech speakers might also say things like:

• Tahle skupina potřebuje spolupráci. — more informal
• Tato skupina potřebuje více spolupráce. — this group needs more cooperation
• Tato skupina potřebuje spolupracovat. — this group needs to cooperate

The original sentence is correct and natural.

Spolupráce is a feminine noun.

Yes, that matters because gender affects its case endings.

Here the important part is:

• dictionary form: spolupráce
• accusative singular: spolupráci

So its feminine declension is the reason the ending changes.

Unlike tato, however, there is no adjective or demonstrative here agreeing with spolupráci, so you only see the case change on the noun itself.

A rough pronunciation guide is:

• Tato ≈ TAH-to
• skupina ≈ SKOO-pi-na
• potřebuje ≈ POT-rzhe-boo-ye
• spolupráci ≈ SPO-loo-prah-tsee

A few useful notes:

• ř in potřebuje is a special Czech sound with no exact English equivalent.
• č would sound like ch in church, but here you have c in -ci, which sounds like ts.
• Stress in Czech is usually on the first syllable of each word:
  • TAto
  • SKUpina
  • POtřebuje
  • SPOlupráci

Yes. That is very common in everyday Czech.

Compare:

• tato skupina — more explicit, slightly more formal or careful
• ta skupina — common spoken Czech, still meaning this/that group depending on context
• tahle skupina — very colloquial, clearly this group

So:

• Tato skupina potřebuje spolupráci.
• Ta skupina potřebuje spolupráci.
• Tahle skupina potřebuje spolupráci.

All can be natural, but the style is a little different.

In Czech, just like in English, skupina (group) is grammatically a singular noun.

So it takes:

• singular demonstrative: tato
• singular verb: potřebuje

Even though the meaning involves multiple people, the grammar follows the noun itself, not the number of members inside it.

That is why you do not use a plural verb here.