Na této úrovni je práce jednoduchá.

Na této úrovni means at this level / on this level.

Here, na is used with the locative case because it expresses location or setting, not movement.

• tato → této = locative singular of this
• úroveň → úrovni = locative singular of level

So:

• ta úroveň = the level
• na této úrovni = at this level

This is a very common Czech pattern:

• na vysoké úrovni = at a high level
• na jiné úrovni = at another level

With úroveň, Czech normally uses na in this kind of expression.

So Czech says:

• na této úrovni = at this level

Using v této úrovni would sound unnatural here.

This is one of those combinations you mostly just learn as a fixed pattern:

• na úrovni A1
• na pokročilé úrovni
• na základní úrovni

Yes. In this sentence, práce is the subject, so it is in the nominative singular.

The dictionary form is:

• práce = work, job

So in:

• Na této úrovni je práce jednoduchá.

the structure is basically:

• práce = the work
• je jednoduchá = is simple/easy

A useful thing to know is that práce can look the same in more than one case, so the form by itself can be ambiguous. But here the verb je and the adjective jednoduchá make it clear that práce is singular and functioning as the subject.

Because it agrees with práce, which is a feminine singular noun.

In Czech, adjectives must agree with the noun they describe in:

• gender
• number
• case

Since práce is feminine singular nominative, the adjective must also be feminine singular nominative:

• jednoduchý = masculine
• jednoduchá = feminine
• jednoduché = neuter

So:

• práce je jednoduchá
• úkol je jednoduchý
• cvičení je jednoduché

In a normal sentence like this, je is needed.

• je = is
• it is the 3rd person singular of být = to be

Czech usually keeps the present tense of to be in this kind of statement:

• Práce je jednoduchá. = The work is simple.

Leaving it out would sound incomplete in standard Czech.

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

The sentence:

• Na této úrovni je práce jednoduchá.

puts Na této úrovni first to set the context: at this level.

Other word orders are possible, for example:

• Práce je na této úrovni jednoduchá.

This also means essentially the same thing, but the emphasis shifts a little. The original version sounds natural if the speaker wants to frame the statement by level first.

So the sentence order is not random; it helps show what the speaker treats as the starting point or topic.

It can mean either, depending on context.

The basic meaning of jednoduchý / jednoduchá / jednoduché is:

• simple
• straightforward
• sometimes easy

So práce je jednoduchá can mean:

• the work is simple
• the work is easy

If someone wanted to stress easy more specifically, Czech might also use:

• snadná
• sometimes lehká

But jednoduchá is completely natural here.

Práce is a broad word. Depending on context, it can mean:

• work
• job
• piece of work
• sometimes even assignment/task

In this sentence, the exact English translation depends on the larger context. Without more context, work is the safest general meaning.

For example:

• Ta práce je těžká. = That work/job is hard.
• Hledám práci. = I’m looking for a job.

The basic form is tato, which means this for a feminine noun.

Here is the relevant part:

• tato úroveň = this level
• na této úrovni = at this level

So této is just the declined form of tato required by the locative after na.

Because úroveň is feminine, you use the feminine form of this.

Because that is simply the grammatical gender of the noun úroveň.

In Czech, every noun has a grammatical gender, and you have to learn it together with the word. For úroveň, the gender is feminine.

That is why you get:

• tato úroveň
• na této úrovni

and not masculine or neuter forms.

A useful habit is to learn new nouns together with an agreeing adjective or demonstrative:

• tato úroveň
• dobrá úroveň

That helps you remember the gender.

Yes, it is natural and grammatical.

It sounds like a neutral statement such as:

• At this level, the work is simple.
• At this level, the work is easy.

The sentence is especially natural in explanatory, academic, or instructional contexts, where someone is comparing difficulty by level.