Mop a vysavač jsou v koupelně.

Because the subject is two things: mop a vysavač = the mop and the vacuum cleaner.

In Czech, when two singular nouns are joined by a (and), the verb is usually plural:

• mop je v koupelně = the mop is in the bathroom
• vysavač je v koupelně = the vacuum cleaner is in the bathroom
• mop a vysavač jsou v koupelně = the mop and the vacuum cleaner are in the bathroom

So jsou is the plural form of to be for they/are.

A means and.

So:

• mop a vysavač = mop and vacuum cleaner

It is a very common basic conjunction in Czech.

Because after the preposition v meaning in, Czech usually uses the locative case when talking about location.

The basic dictionary form is:

• koupelna = bathroom

But after v for location, it changes to:

• v koupelně = in the bathroom

So koupelně is the locative singular form of koupelna.

It is the locative singular.

The sentence uses v in the sense of in, describing where something is. With that meaning, v takes the locative:

• v domě = in the house
• v kuchyni = in the kitchen
• v koupelně = in the bathroom

This is one of the most common patterns to learn early:

• v + locative = in / inside / at a place

Their grammatical genders are:

• mop – masculine inanimate
• vysavač – masculine inanimate
• koupelna – feminine

Gender matters in Czech because it affects adjective endings, pronouns, and sometimes verb forms in the past tense. In this present-tense sentence, the main thing to notice is that the two nouns together make a plural subject, so the verb is jsou.

Yes, mop is used in Czech. It is a borrowed word, so it looks almost the same as in English.

That said, vocabulary can vary a bit depending on context and speaker. But mop is a normal word you may hear and see.

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

So a Czech sentence like:

• Mop a vysavač jsou v koupelně.

can mean, depending on context:

• The mop and the vacuum cleaner are in the bathroom.
• A mop and a vacuum cleaner are in the bathroom.

Usually the context makes it clear which meaning is intended.

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

The neutral order here is:

• Mop a vysavač jsou v koupelně.

But other orders are possible, especially for emphasis:

• V koupelně jsou mop a vysavač. = In the bathroom, there is a mop and a vacuum cleaner.

This version puts the location first and sounds natural if you are answering a question like What is in the bathroom?

So the meaning stays very similar, but the emphasis changes.

Roughly: VIH-sah-vach

A few helpful points:

• vy sounds roughly like vih or vi with a short vowel
• sava has clear, simple vowels
• č sounds like ch in church

So vysavač ends with a ch sound, not a k or sh sound.

It is pronounced roughly like ysoh.

For many learners, the tricky part is the initial j:

• Czech j is pronounced like English y in yes

So:

• jsou sounds roughly like ysoh
• not like English j in job

Normally, with mop a vysavač as the subject, standard grammar expects the plural verb:

• V koupelně jsou mop a vysavač.

That is the safest and most standard version.

Learners should use jsou here because there are two items. Using je would sound nonstandard to most learners’ ears and is best avoided.

The dictionary forms are:

• mop = mop
• a = and
• vysavač = vacuum cleaner
• jsou = are / they are
  (from the verb být = to be)
• v = in
• koupelna = bathroom

Only koupelna changes form here:

• koupelna → v koupelně

You would use the singular verb:

• Mop je v koupelně.

Compare:

• Mop je v koupelně. = The mop is in the bathroom.
• Mop a vysavač jsou v koupelně. = The mop and the vacuum cleaner are in the bathroom.

So the main change is:

• je = is
• jsou = are