Výběr je velký, takže každý něco najde.

Because výběr is a masculine inanimate singular noun.

In Czech, adjectives must agree with the noun in gender, number, and case:

• velký = masculine singular
• velká = feminine singular
• velké = neuter singular or plural in some contexts

So:

• výběr je velký = the selection is big / wide

Here, výběr is in the nominative singular, and the predicate adjective matches it.

Výběr means selection, choice, or range of options.

In this sentence, it refers to there being a lot to choose from, so in natural English it often corresponds to:

• The selection is large
• There is a wide choice
• There’s a big range

So výběr je velký is a very natural Czech way to express the idea that there are many options available.

Je is the 3rd person singular of být (to be).

So:

• výběr je velký = the selection is big

Unlike Russian, for example, Czech normally uses the present-tense form of to be in sentences like this.

So you need je here; you cannot normally just say Výběr velký in standard Czech.

Takže means so, therefore, or which means that.

In this sentence:

• Výběr je velký, takže každý něco najde.
• The selection is large, so everyone will find something.

This is different from protože, which means because.

Compare:

• Výběr je velký, takže každý něco najde.
  = The selection is large, so everyone will find something.

• Každý něco najde, protože výběr je velký.
  = Everyone will find something because the selection is large.

So:

• takže = result
• protože = reason

Každý means each one, everyone, or every person.

Czech often uses každý in the singular even when English uses something that feels plural in meaning.

So:

• každý něco najde = everyone will find something

Grammatically, každý is singular, which is why the verb is also singular:

• každý najde
  not
• každý najdou

You could use všichni in other contexts, but it has a slightly different feel:

• každý = each individual person
• všichni = all people / everyone as a group

Here, každý is the most natural choice.

Něco means something.

So:

• každý něco najde = everyone will find something

It is the natural indefinite object here: not a specific thing, just some suitable item or option.

A useful comparison:

• něco = something
• nic = nothing
• všechno = everything

In this sentence, něco is the direct object of najde.

Najde is the 3rd person singular form of najít, which means to find.

So:

• najít = infinitive, to find
• najde = he/she/it will find or, with a subject like každý, everyone will find

Why not hledá?

• hledat = to look for
• najít = to find

Those are different actions.

So:

• každý něco hledá = everyone is looking for something
• každý něco najde = everyone will find something

Because najít is a perfective verb.

In Czech, perfective verbs do not normally have a true present meaning. Their present-tense forms usually refer to the future.

So:

• najde literally looks like a present-tense form
• but it means will find

This is very common in Czech:

• udělá = will do
• řekne = will say
• najde = will find

If you wanted an actual present/progressive meaning, you would usually use the imperfective verb:

• hledá = is looking for / looks for
• nachází = finds / is finding, though this is less natural in everyday speech for this context

Here něco is in the accusative, because it is the direct object of najde.

• najít co? = to find what?
• answer: něco

With něco, the nominative and accusative forms are the same, so the form does not change visibly here.

That is why you simply see:

• každý něco najde

Both are possible, but they can sound slightly different in emphasis.

• každý něco najde is a very natural, neutral order
• každý najde něco can sound more marked, with a bit more focus on the fact of finding

Czech word order is more flexible than English, but it is not random. It often reflects information structure: what is known, what is new, and what is emphasized.

In this sentence, každý něco najde flows very naturally after takže.

Yes. Takže introduces another clause, so a comma is standard here.

The sentence has two parts:

1. Výběr je velký
2. takže každý něco najde

So the comma separates the cause/result relationship:

• The selection is large, so everyone will find something.

This is normal Czech punctuation.

A rough English-friendly guide would be:

VEE-byer yeh VEL-kee, TAK-zheh KAZH-dee NYETCH-o NIGH-deh

A few important points:

• ý is a long ee sound
• ř in výběr is the famous Czech sound; learners often approximate it at first
• ž sounds like the s in measure
• č sounds like ch in church
• j is pronounced like English y
• aj in najde sounds roughly like eye

A more careful approximation:

• Výběr ≈ VEE-byerr
• je ≈ ye
• velký ≈ VEL-kee
• takže ≈ TAK-zhe
• každý ≈ KAZH-dee
• něco ≈ NYE-tso
• najde ≈ NIGH-de

Yes. In this context, velký does not mean physically large. It means large in extent, broad, or wide.

So velký výběr is best understood as:

• a wide selection
• a large choice
• a broad range

This is a very common Czech collocation.

So even though velký literally means big/large, the phrase is idiomatic and natural.