Obě rekvizity jsou na stole.

Because rekvizity is a feminine plural noun.

Czech both changes form depending on gender:

• oba = masculine
• obě = feminine and neuter

The singular noun is rekvizita, which is feminine, so with the plural rekvizity you use obě:

• obě rekvizity = both props

If the noun were masculine, you would normally use oba instead.

Here rekvizity is nominative plural, because it is the subject of the sentence.

You can tell because:

• it is the thing being talked about
• the verb jsou means are, agreeing with a plural subject

So the structure is:

• obě rekvizity = the subject
• jsou na stole = are on the table

A useful detail: rekvizity can also look like another case form in other contexts, but in this sentence it is clearly nominative plural.

Because rekvizita is a regular feminine noun ending in -a.

A very common pattern is:

• singular: -a
• plural nominative: -y or -i

So:

• rekvizita = one prop
• rekvizity = props

This is a standard Czech plural pattern for many feminine nouns.

In this sentence, jsou is needed.

• je / jsou are forms of být = to be
• jsou means are

Czech usually does use the present tense of to be in sentences like this:

• Rekvizity jsou na stole. = The props are on the table.

So unlike some other Slavic languages, Czech does not normally drop the present-tense to be here.

Because na can take different cases depending on the meaning:

• na + locative = location, being on something
• na + accusative = movement onto something

Here the props are already there, so it is location, not motion:

• na stole = on the table

Compare:

• Rekvizity jsou na stole. = The props are on the table.
• Dávám rekvizity na stůl. = I am putting the props onto the table.

So stole is the correct form because the sentence describes where they are.

Stole is the locative singular of stůl (table).

The noun changes after the preposition na when na expresses location:

• stůl = table
• na stole = on the table

This is one of the case changes learners have to get used to in Czech: the noun after a preposition often changes its ending.

Because Czech does not have articles like English a and the.

So Czech often says things that look more literal in English, like:

• na stole = literally on table

But in natural English, we translate it as:

• on the table

Whether something means a, the, or no article at all depends on context.

Yes, Czech word order is fairly flexible.

Obě rekvizity jsou na stole is a neutral, natural sentence. But other orders are possible, depending on emphasis:

• Na stole jsou obě rekvizity. = On the table are both props.
  
  • This emphasizes where they are.
• Rekvizity jsou obě na stole.
  
  • Possible, but less neutral in many contexts.

Czech word order often shows focus and emphasis, not just grammar.

Both refer to the number two, but they are not used in exactly the same way.

• dvě rekvizity = two props
• obě rekvizity = both props

Dvě simply gives the number.

Obě means both, so it refers to the two specific ones, often when both members of a pair or set are meant.

So if you just mean quantity, use dvě. If you mean the two of them, use obě.

Yes, you can, but it is usually more emphatic than necessary.

• obě rekvizity = the normal, simple way to say both props
• obě dvě rekvizity = both of the two props / both props, with extra emphasis

Learners should usually start with obě rekvizity, since it is clean and standard.

Obě is pronounced roughly like ob-yeh.

A useful point is the letter ě. After b, it signals a y-like sound before the vowel:

• bě sounds roughly like byeh

So:

• obě ≈ ob-yeh

The exact Czech pronunciation is more precise than English spelling can show, but ob-yeh is a helpful approximation for learners.

Most often, rekvizita means a prop, especially in theater, film, TV, or performance contexts.

Depending on context, it can sometimes be translated more broadly, but prop is the most common and useful meaning for learners.

So in this sentence, obě rekvizity most naturally means:

• both props