Tento kraj je krásný.

Tento is the clearer, more specific word for this.

Both ten and tento are demonstrative words, but they are used a bit differently:

• tento kraj = this region / this area
• ten kraj often means that region, though in real Czech ten is also used very often in ways that do not match English perfectly

So in a simple learning sentence, tento is the safest choice for a clear this meaning.

Kraj is a masculine inanimate noun.

That matters because words that describe or point to the noun must match it. In this sentence:

• tento matches kraj
• krásný also matches kraj

Czech agreement is very important. If the noun had a different gender, the forms would change:

• tato vesnice je krásná = this village is beautiful
• toto město je krásné = this city is beautiful

So the form of the noun affects the form of the other words around it.

Because adjectives in Czech agree with the noun in gender, number, and case.

Here, kraj is:

• masculine
• singular
• nominative

So the adjective takes the masculine singular nominative form krásný.

Compare:

• krásný kraj = masculine
• krásná vesnice = feminine
• krásné město = neuter

The -ý ending is the normal ending here for a hard adjective describing a masculine singular nominative noun.

Kraj is in the nominative case because it is the subject of the sentence.

The sentence structure is:

• Tento kraj = the subject
• je = the verb
• krásný = the description

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

In normal Czech, je is needed here.

It is the 3rd person singular present tense of být, meaning is.

So:

• je = is

Unlike some other Slavic languages, Czech normally does not drop the present-tense form of to be in standard sentences like this. So Tento kraj krásný would sound incomplete or incorrect in standard Czech.

Because Czech has no articles.

There is no direct equivalent of English a or the. Czech usually expresses that meaning through:

• context
• word order
• demonstratives such as ten or tento

So kraj can mean a region, the region, or just region depending on the situation. In this sentence, tento already makes it specific.

Czech often leaves out subject pronouns when they are not needed.

In this sentence, the subject is already stated as tento kraj, so there is no reason to add a separate pronoun.

English often needs a pronoun, but Czech does not. Once the noun is present, that is enough.

No, Czech word order is fairly flexible, but the neutral, most natural order here is:

Tento kraj je krásný.

That is the basic subject + verb + description order.

Other word orders are possible, but they change the emphasis:

• Krásný je tento kraj. = more literary or contrastive
• Je tento kraj krásný? = Is this region beautiful?

So the original sentence is the most neutral way to say it.

Not always.

Kraj can mean different but related things depending on context, such as:

• a region
• an area
• a part of a country
• in some contexts, an administrative region

So the exact English translation depends on the situation. In everyday Czech, it does not always have to sound official.

A rough English-friendly pronunciation is:

TEN-to kr-eye ye KRAAS-nee

A few useful notes:

• j in Czech is pronounced like English y
• je sounds like ye
• kraj is one syllable
• á is a long vowel
• ý is also long, and sounds roughly like a long ee
• stress in Czech usually falls on the first syllable of each word

So:

• Tento → TEN-to
• kraj → kr-eye
• je → ye
• krásný → KRAAS-nee

Yes. Tenhle kraj also means this region / this area in everyday speech.

Compared with tento kraj:

• tento kraj sounds a bit more neutral, careful, or textbook-like
• tenhle kraj sounds more conversational

Both are correct, but tento kraj je krásný is a very standard form for learners to study.