A porszívó a szőnyeg mellett áll, de ma még nem használom.

Because a is the Hungarian definite article, equivalent to English the.

In this sentence:

• A porszívó = the vacuum cleaner
• a szőnyeg mellett = next to the carpet/rug

Hungarian has two forms of the definite article:

• a before consonant sounds
• az before vowel sounds

So you get:

• a porszívó
• a szőnyeg but
• az asztal

Porszívó is the normal word for vacuum cleaner.

It is a compound word:

• por = dust
• szívó = sucker / something that sucks

So the literal idea is something like dust-sucker.

Because mellett is a postposition, not a preposition.

English uses prepositions:

• next to the carpet

Hungarian often uses postpositions:

• a szőnyeg mellett

So the order is:

• article + noun + postposition

This is very common in Hungarian:

• a ház előtt = in front of the house
• az autó mögött = behind the car
• az asztal alatt = under the table

No. In a szőnyeg mellett, the noun szőnyeg does not take a separate case ending, because mellett is an independent postposition.

So the structure is:

• a szőnyeg
  • mellett

This is different from forms where Hungarian uses a suffix directly on the noun, such as:

• szőnyegen = on the carpet
• szőnyeghez = to the carpet

Áll literally means stands, and Hungarian often uses posture verbs to describe where something is.

So áll can suggest that the vacuum cleaner is:

• standing upright
• positioned there in a visible, physical way

You could also say A porszívó a szőnyeg mellett van, which would simply mean the vacuum cleaner is next to the carpet.

The difference is mainly nuance:

• van = is
• áll = stands, is standing

Hungarian uses these posture verbs more often than English does.

De means but.

It connects two clauses:

• A porszívó a szőnyeg mellett áll
• de ma még nem használom

The comma is normal in Hungarian when two clauses with separate verbs are joined like this. So the punctuation works much like English here.

Még nem means not yet or literally something like still not.

In this sentence:

• ma még nem használom = I haven’t used it yet today / I’m not using it yet today

This combination is very common in Hungarian:

• még nem tudom = I don’t know yet
• még nem ettem = I haven’t eaten yet

So it is a set expression worth learning as a chunk: még nem.

Because Hungarian verbs usually show the subject in the ending.

In használom, the ending tells you that the subject is I:

• -om / -em / -öm can mark I with a definite object

So Hungarian often leaves out subject pronouns unless they are needed for emphasis or contrast.

That means:

• használom already means I use it / I am using it

You could say én használom, but that would add emphasis:

• I’m the one using it

Because Hungarian has definite and indefinite verb conjugation.

Használom is the definite form. It is used when the object is definite, specific, or understood from context.

Here, the object is understood to be the vacuum cleaner, so the verb is definite:

• használom = I use it / I use the specific thing

Compare:

• használok egy porszívót = I use a vacuum cleaner
  
  • indefinite object → használok
• használom a porszívót = I use the vacuum cleaner
  
  • definite object → használom

So even though a porszívót is not repeated, it is still understood, and that is why használom is used.

It is not stated separately, because Hungarian often leaves out object pronouns when the object is clear from context.

Here, it clearly refers to the vacuum cleaner, mentioned in the first clause.

So instead of saying a separate word for it, Hungarian simply uses:

• használom

That verb form already signals a definite object.

English needs:

• I don’t use it yet today or
• I haven’t used it yet today

Hungarian can just say:

• ma még nem használom

Ma means today, and Hungarian word order is flexible, but not random. Words are often placed according to topic, focus, and emphasis.

Here, ma naturally sets the time frame for the second clause:

• de ma még nem használom

This feels like:

• but as for today, I haven’t used it yet

You may also see other word orders in Hungarian, but they can change emphasis. For example:

• De még ma sem használom = But I’m not using it even today
• A porszívót ma még nem használom = As for the vacuum cleaner, I’m not using it yet today

So the given order is a very natural neutral one.

A few important ones:

• sz is pronounced like English s
  • szőnyeg, porszívó
• s by itself is pronounced like English sh
  • használom
• ny is like the ny in Spanish señor or the ni in onion
  • szőnyeg
• gy is a soft sound somewhat like the d in British during for some speakers, but it has no perfect English equivalent
  • szőnyeg
• Long vowels are held longer:
  • í in porszívó
  • ó in porszívó

Also, Hungarian stress is usually on the first syllable of each word:

• PORszívó
• SZŐnyeg
• MELlett
• HASZnálom

Yes. Hungarian allows several natural variations depending on emphasis.

For example:

• A porszívó a szőnyeg mellett van, de ma még nem használom.
  More neutral location verb: is rather than stands
• Ma még nem használom a porszívót.
  This makes the second idea stand alone and says the object explicitly
• A porszívót ma még nem használom.
  This puts extra attention on the vacuum cleaner

The original sentence is perfectly natural, but Hungarian often gives you more than one good way to say nearly the same thing.