Měřidlo je v domě.

Because the preposition v usually requires the locative case when it means in or inside a place.

The dictionary form is dům.
After v, it changes to the locative singular: v domě.

So:

• dům = basic form
• v domě = in the house

This is a very common thing in Czech: nouns often change form depending on their role in the sentence.

Domě is in the locative singular.

In this sentence, v means in, and with location it takes the locative:

• v domě = in the house
• v městě = in the city
• v autě = in the car

So the pattern is:

• preposition v
• noun in the locative

Be careful: v can also sometimes take the accusative in different meanings, but with simple location like this, it is locative.

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

So:

• jsem = I am
• jsi = you are
• je = he/she/it is

In this sentence, měřidlo is singular, so je is the correct form.

Měřidlo is neuter.

A very common clue is the ending -o. Many Czech neuter nouns end in -o or -e.

Examples:

• město = town/city → neuter
• auto = car → neuter
• měřidlo = measuring device / gauge / meter → neuter

This matters because adjectives, pronouns, and sometimes past-tense forms agree with the noun’s gender.

Czech has no articles like English a/an and the.

So Měřidlo je v domě can mean something like:

• The measuring device is in the house
• A measuring device is in the house

Which one is meant depends on context.

This is very normal in Czech, and learners have to get used to understanding definiteness from the situation rather than from a separate word.

The letter ř is one of the most famous difficult Czech sounds.

It is a special Czech sound, something like a mix of r and zh/ž. There is no exact English equivalent.

A rough guide:

• r = rolled or trilled sound
• ž = like the s in measure
• ř combines features of both

In Měřidlo, the ě also affects pronunciation, so the beginning sounds roughly like mnye-rzhid-lo, though that is only an approximation.

The best strategy is to listen to native audio and imitate it. For many learners, ř takes a long time to master.

In Czech, the main stress is usually on the first syllable of each word.

So roughly:

• MĚ-řid-lo
• JE
• V DO-mě

A small complication: short prepositions like v are often pronounced together with the following word, so v domě is said almost like one unit, with the stress on DO-.

So in natural speech, you will often hear:

• MĚřidlo je v DOmě

The basic neutral word order here is:

• Měřidlo je v domě.

Czech word order is more flexible than English, because cases show grammatical relationships.

You could change the order for emphasis, for example:

• V domě je měřidlo. = There is a measuring device in the house / emphasis on location
• Je v domě měřidlo. = possible in certain contexts, often more marked

So yes, the order can change, but the original sentence is the most straightforward neutral version.

The basic preposition is v.

The longer form ve is used mainly for easier pronunciation before certain consonant clusters or in some set patterns.

For example:

• v domě = correct
• ve škole = common and natural
• ve městě = common and natural

So with domě, plain v is the normal form.

It is a real and correct Czech word, but it can sound a bit technical depending on context.

It generally refers to a measuring device, gauge, or instrument. In specific situations, Czech might also use more specialized words depending on what kind of device is meant.

So a learner should understand it, but in real life the exact noun may vary according to the object being described.

The dictionary forms are:

• měřidlo → already in dictionary form
• být → the infinitive of je
• dům → the dictionary form of domě
• v → the preposition itself

This is useful because when you look words up, you usually need the dictionary form, not the changed case form.