Ten scenariusz jest prosty.

Because scenariusz is a singular masculine noun in the nominative case, and the demonstrative ten has to agree with it.

Polish this/that-like words change for gender:

• ten = masculine
• ta = feminine
• to = neuter

So:

• ten scenariusz
• ta książka
• to okno

Agreement is very important in Polish: the demonstrative, adjective, and noun must match.

In this sentence, you can tell from the forms around it:

• ten is masculine
• prosty is also masculine singular

So even if you did not already know the noun’s gender, the sentence shows it.

More generally, many Polish nouns ending in a consonant are masculine, and scenariusz ends in -sz, so that fits the common pattern.

Because adjectives in Polish must agree with the noun they describe.

Here, prosty agrees with scenariusz, which is:

• masculine
• singular
• nominative

So the adjective also has to be masculine singular nominative: prosty.

Compare:

• ten scenariusz jest prosty — masculine
• ta historia jest prosta — feminine
• to zadanie jest proste — neuter

In normal standard Polish, yes, you usually include jest in the present tense.

So:

• Ten scenariusz jest prosty.

is the normal full sentence.

Polish does sometimes omit jest in very informal speech, headlines, notes, or certain stylistic contexts, but for learners, it is best to treat jest as required in ordinary sentences like this one.

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

The basic pattern is:

• [subject in nominative] + jest + adjective

So in:

• Ten scenariusz jest prosty

ten scenariusz is the subject, so it stays in the nominative.

Yes. With być (to be) plus an adjective, Polish normally uses the adjective in the nominative.

So:

• scenariusz — nominative
• prosty — nominative masculine singular

This is different from some other Polish structures where a different case might appear, but with a straightforward adjective after jest, nominative is what you expect.

Yes, absolutely.

• Ten scenariusz jest prosty = This/that script/scenario is simple
• Scenariusz jest prosty = The script/scenario is simple or just A script/scenario is simple, depending on context

Polish has no articles like a or the, so context does a lot of work. Adding ten makes the noun more specific: this particular one.

Most often, ten is taught as this, and that is a good default.

However, in real Polish, ten can sometimes be used in ways that overlap with English that, depending on context. Very often, though, learners can safely think of:

• ten = this

If Polish really wants to strongly emphasize that over there, it may use other expressions such as tamten.

It often means script, especially for film, TV, or theatre.

It can also mean scenario in some contexts, such as a plan, projected situation, or possible chain of events.

So the exact English equivalent depends on context, but grammatically the sentence works the same way.

A rough pronunciation guide is:

• scenariusz ≈ stseh-NAH-ryoosh
• prosty ≈ PROS-tih

A few useful details:

• sz sounds like English sh
• Polish c usually sounds like ts
• y is not the same as English ee; it is a tighter, more central vowel
• Stress in Polish usually falls on the second-to-last syllable, so:
  • sce-na-RIUSZ? Actually the standard stress is sce-NA-riusz
  • PROS-ty

So the stress is:

• sce-NA-riusz
• PROS-ty

Yes. Polish word order is more flexible than English because endings show grammatical relationships.

The most neutral order here is:

• Ten scenariusz jest prosty.

But other orders are possible for emphasis, for example:

• Scenariusz jest prosty.
• Prosty jest ten scenariusz. — more marked, emphatic, or literary
• Jest prosty, ten scenariusz. — conversational, with a different rhythm

So word order can change, but the neutral learner-friendly version is the original one.

Because Polish does not have articles.

English says:

• the script
• a script

Polish just says:

• scenariusz

Whether it means a, the, or sometimes just the general idea depends on context.

That is why ten can be useful: it adds specificity, somewhat like this or sometimes a more clearly identified the one.

Grammatically, Polish word order is flexible enough that unusual orders can sometimes occur, but Ten scenariusz prosty jest would sound unnatural in ordinary speech.

The natural order is:

• Ten scenariusz jest prosty.

If you move things around, you usually do it for a reason such as emphasis, contrast, or style. For everyday Polish, stick with the standard order.