Tento výkon je dobrý.

Tento means this.

A very common learner question is why Czech sometimes uses ten and sometimes tento. In practice:

• tento = this and sounds a bit more explicit or formal
• ten can often mean that, but in everyday Czech it is also very commonly used where English would say this

So:

• Tento výkon je dobrý. = This performance is good.
• Ten výkon je dobrý. can also often mean This performance is good in natural speech, depending on context.

If you are learning, tento is a clear and safe way to say this.

Výkon is a noun with several possible meanings depending on context. It often means things like:

• performance
• output
• achievement
• power or capacity in technical contexts

So in this sentence, if the meaning has already been given to you, you should still know that výkon is a flexible word. For example:

• in sports or art: performance
• in work or results: output
• in engineering: power

That is normal in Czech: one noun can cover a range that English might split into several words.

Because dobrý has to agree with výkon.

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

• gender
• number
• case

Here, výkon is:

• masculine
• singular
• nominative

So the adjective also takes the masculine singular nominative form:

• dobrý

Compare:

• dobrý výkon = good performance/result
• dobrá kniha = good book
• dobré auto = good car

So the ending -ý tells you the adjective matches a masculine noun like výkon.

In Czech, every noun has a grammatical gender: masculine, feminine, or neuter.

Výkon is grammatically masculine. You usually have to learn a noun’s gender as part of the word.

One clue is that many masculine nouns in the dictionary form end in a consonant:

• výkon
• hrad
• stůl

But this is only a helpful pattern, not a perfect rule.

Because výkon is masculine, words that agree with it also use masculine forms:

• tento výkon
• dobrý výkon

Je is the 3rd person singular form of být, which means to be.

So:

• je = is

The sentence structure is very similar to English:

• Tento výkon = this performance
• je = is
• dobrý = good

So literally:

• This performance is good.

Unlike in Russian, for example, Czech normally keeps the verb to be in the present tense in sentences like this.

Normally, no.

In standard Czech, you usually need je in a sentence like this:

• Tento výkon je dobrý.

Leaving it out would sound incomplete in normal standard speech:

• Tento výkon dobrý. → not standard as a normal full sentence

There are some special contexts, such as headlines, notes, or very informal speech, where Czech can drop words, but for ordinary grammar you should include je.

It is an adjective.

It describes the noun výkon, even though it comes after je.

This is called a predicate adjective in English grammar. Czech uses an adjective here because it is describing the subject:

• výkon je dobrý = the performance is good

It is not an adverb. An adverb would describe a verb, not a noun.

It is in the nominative case.

The nominative is used for the subject of the sentence. Here, výkon is the subject:

• Tento výkon = the thing being talked about

The adjective dobrý is also in nominative because it agrees with the subject in this kind of sentence.

So this is a simple nominative pattern:

• Tento výkon je dobrý.

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

The neutral, straightforward order is:

• Tento výkon je dobrý.

But other orders are possible depending on emphasis, style, or context, for example:

• Ten výkon je dobrý.
• Dobrý je tento výkon.
• Tento výkon dobrý není. = This performance is not good.

However, as a learner, the basic order subject + je + adjective is the safest and most natural starting point.

Yes, very often you can.

In everyday Czech, ten is extremely common and often works where English would use this or that, depending on context and emphasis.

So:

• Tento výkon je dobrý. = more explicitly this performance
• Ten výkon je dobrý. = often natural in speech, depending on the situation

If you want to be very clear and textbook-like, use tento for this. If you hear native speakers use ten a lot, that is normal.

Because Czech does not use articles the way English does.

English says:

• the performance
• a performance

Czech usually does not have separate words for a and the.

Instead, Czech expresses definiteness through:

• context
• word order
• demonstratives like ten or tento

So výkon by itself does not need an article. If Czech wants to emphasize this performance, it can use:

• tento výkon

You make it negative by changing je to není:

• Tento výkon není dobrý. = This performance is not good.

So:

• je = is
• není = is not

This is a very useful pattern to remember:

• To je dobré. = That is good.
• To není dobré. = That is not good.

A simple learner-friendly pronunciation guide would be:

• dobrý ≈ DOB-ree

A few details:

• o is a clear short o
• br is pronounced together
• ý is a long ee sound

So the stress is on the first syllable, as in nearly all Czech words:

• DO-brý

Czech stress is usually very regular: it falls on the first syllable.

It is neutral and correct. It does not sound strange or overly formal, though tento can sound a bit more explicit or careful than ten.

So:

• Tento výkon je dobrý. = correct, clear, neutral
• Ten výkon je dobrý. = also very natural, especially in everyday speech

A learner can safely use Tento výkon je dobrý in both spoken and written Czech.