Holnap visszaviszem a háztartási gépet az üzletbe.

It is made of two parts:

• vissza = back
• viszem = I take / I carry it (with a definite object)

So visszaviszem literally means I take it back.

This is very common in Hungarian: a prefix/preverb such as vissza combines with the verb to add a directional meaning.

Because Hungarian very often uses the present tense for the future when the time is already clear from another word.

Here, holnap means tomorrow, so Holnap visszaviszem... naturally means I’ll take it back tomorrow.

This is completely normal Hungarian. A more explicitly future form is also possible:

• Holnap vissza fogom vinni... = I will take it back tomorrow

But in everyday Hungarian, the simple present with a future time word is extremely common.

Because Hungarian verbs have two conjugations:

• indefinite conjugation
• definite conjugation

Here the object is definite: a háztartási gépet = the household appliance.
So Hungarian uses the definite verb form:

• viszem = I take it / I am taking the specific thing
• viszek = I take / I carry, used with an indefinite or no object

Compare:

• Visszaviszem a gépet. = I’m taking back the appliance.
• Visszaviszek egy gépet. = I’m taking back an appliance.

No. In this sentence it stays attached because the clause is neutral. But Hungarian preverbs often separate from the verb in certain situations, especially with:

• negation
• focus/emphasis
• auxiliaries

Examples:

• Visszaviszem a gépet. = I’m taking the appliance back.
• Nem viszem vissza a gépet. = I’m not taking the appliance back.
• Holnap viszem vissza a gépet. = It’s tomorrow that I’m taking the appliance back.
• Vissza fogom vinni a gépet. = I will take the appliance back.

So learners should think of vissza as something that belongs with the verb, but not always as one written block in every sentence pattern.

Because gép is the direct object, and Hungarian marks direct objects with the accusative ending -t.

• gép = machine / appliance
• gépet = machine / appliance as a direct object

A linking vowel appears before -t, so it becomes gépet, not just gépt.

In the sentence:

• a háztartási gépet = the household appliance as the thing being taken back

It means household appliance.

It is built like this:

• háztartás = household
• háztartási = household / domestic (an adjective formed from háztartás)
• gép = machine, appliance

So:

• háztartási gép = household appliance

In the sentence, only the noun gép gets the accusative ending:

• a háztartási gépet

That is normal Hungarian: the case ending goes on the main noun, not on the adjective.

The ending -ba/-be means into.

So:

• üzlet = store, shop
• üzletbe = into the store / to the store (with the idea of going inside)

This fits the meaning well: you are taking the appliance back into the shop.

Useful comparison:

• üzletbe = into the shop
• üzletben = in the shop
• üzlethez = to the shop (toward it, not necessarily inside)

They are the same definite article. The choice depends on the sound that follows:

• a before a consonant
• az before a vowel

So:

• a háztartási gépet because háztartási begins with h
• az üzletbe because üzlet begins with a vowel sound

This is somewhat similar to English a/an, but remember: a/az are both definite, so they mean the, not a/an.

Hungarian distinguishes between:

• visz = take / carry away
• hoz = bring / carry toward

Here the speaker is talking about taking the appliance back to the store, so the natural verb is visz.

So:

• visszaviszem = I take it back
• visszahozom would mean I bring it back, usually toward the speaker’s location or viewpoint

English often uses take and bring more loosely, but Hungarian keeps this distinction more clearly.

No, Hungarian word order is quite flexible. The order changes depending on topic and emphasis, not just grammar.

The sentence

• Holnap visszaviszem a háztartási gépet az üzletbe.

is a natural, neutral way to say it, with holnap setting the time first: Tomorrow, I’m taking the appliance back to the store.

Other orders are possible, for example:

• A háztartási gépet holnap visszaviszem az üzletbe.
  This puts more topic emphasis on the appliance.

• Holnap viszem vissza a háztartási gépet az üzletbe.
  This can make tomorrow more contrastive or emphatic.

So the order is not random, but it is not as rigid as English word order.

Holnap is an adverb meaning tomorrow.

In this sentence it does not need:

• an article
• a case ending
• any extra word

It simply tells you when the action happens.

Hungarian often puts time expressions early in the sentence, so starting with Holnap is very natural.

Yes, often you could.

• üzlet = store, shop
• bolt = shop, store

In many everyday situations, bolt is the more common everyday word. So:

• Holnap visszaviszem a háztartási gépet a boltba.

would also be understandable and natural in many contexts.

Still, üzlet is perfectly correct and may sound a bit more general or slightly more formal depending on context.