Der Hochstuhl steht in der Küche neben dem Tisch.

Der is the definite article the for the noun Hochstuhl.

• der Hochstuhl = the high chair
• Hochstuhl is a masculine noun in German
• In the nominative case, masculine nouns take der

Here, der Hochstuhl is the subject of the sentence, so der is the correct form.

Hochstuhl means high chair, the kind of chair a small child sits in at a table.

It is a compound noun:

• hoch = high
• Stuhl = chair

German often combines words like this to make one noun.

In German, all nouns are capitalized, not just proper names.

So in this sentence:

• Hochstuhl
• Küche
• Tisch

are all capitalized because they are nouns.

German often uses specific position verbs where English just uses is.

• stehen = to stand
• liegen = to lie
• sitzen = to sit

So Der Hochstuhl steht ... literally means The high chair stands ..., but in natural English we usually say The high chair is ...

German prefers steht here because a chair is seen as an upright object.

Steht is the correct conjugated form for er/sie/es and for singular nouns used as the subject.

The verb is stehen = to stand

Present tense:

• ich stehe
• du stehst
• er/sie/es steht
• wir stehen
• ihr steht
• sie/Sie stehen

Since der Hochstuhl is a singular noun, the verb must be steht.

This is normal German main-clause word order:

1. Der Hochstuhl = subject
2. steht = verb
3. the rest of the information = place details

German main clauses usually put the conjugated verb in second position.
So:

• Der Hochstuhl = position 1
• steht = position 2

That is one of the most important German word-order rules.

Because this sentence describes location, not movement.

German uses different cases after some prepositions, including in:

• in + dative = in / inside, showing location
• in + accusative = into, showing movement toward somewhere

So:

• in der Küche = in the kitchen / located there
• in die Küche = into the kitchen / movement into it

Since the high chair is already there, German uses the dative: der Küche.

Because Küche is a feminine noun, and after in for location, it takes the dative case.

Article changes for feminine singular:

• nominative: die Küche
• dative: der Küche

So:

• die Küche = the kitchen
• in der Küche = in the kitchen

This is a case ending change, not a change in meaning.

For the same reason: this is location, not movement.

Neben is another preposition that can take either dative or accusative:

• neben + dative = next to, beside, located there
• neben + accusative = to next to, moving to that position

So:

• neben dem Tisch = next to the table
• neben den Tisch = to next to the table / beside the table as a destination

Since the chair is already beside the table, German uses the dative.

Tisch is a masculine noun. After neben with a location meaning, it goes into the dative case.

Masculine article changes:

• nominative: der Tisch
• dative: dem Tisch

So:

• der Tisch = the table
• neben dem Tisch = next to the table

They are two-way prepositions in German. That means they can take either:

• dative for location
• accusative for movement/direction

In this sentence:

• in der Küche = location
• neben dem Tisch = location

So both use the dative.

This is a very common German pattern and worth memorizing.

Yes, Der Hochstuhl ist in der Küche neben dem Tisch would be understandable and grammatically correct.

But steht sounds more natural in many situations because German often prefers a verb that describes the object's position.

So:

• ist = more neutral, simply states location
• steht = more idiomatic for an upright object like a chair

It describes the location of the high chair.

The sentence tells us:

• the high chair is in the kitchen
• and more specifically, it is next to the table

So both location phrases belong to Der Hochstuhl steht ...

Yes. German often allows different word order as long as the conjugated verb stays in second position in a main clause.

For example:

• In der Küche steht der Hochstuhl neben dem Tisch.
• Neben dem Tisch steht der Hochstuhl in der Küche.

These versions shift the emphasis, but the basic meaning stays the same.

The original sentence is a very neutral, straightforward version.

Each article matches the noun in gender, case, and number:

• Der goes with Hochstuhl
• der in in der Küche goes with Küche
• dem goes with Tisch

A helpful way to read it is in chunks:

• Der Hochstuhl
• steht
• in der Küche
• neben dem Tisch

German sentences become much easier when you learn to spot these article + noun groups.