Po remoncie muszę rozpakować dwa kartony w przedpokoju i schować wszystko do szafki.

Po remoncie means after the renovation / after the repair work.

Here po is the preposition that means after, and in this meaning it takes the locative case. That is why remont changes to remoncie.

• nominative: remont
• locative: remoncie

So:

• po remoncie = after the renovation

This is a very common pattern in Polish:

• po pracy = after work
• po obiedzie = after lunch
• po filmie = after the film

Polish often leaves out the subject pronoun when it is already clear from the verb ending.

Here, muszę means I must / I have to, so ja is not necessary.

• muszę = I must
• musisz = you must
• musi = he/she/it must

You could say Ja muszę..., but that usually adds emphasis, as in I have to, not someone else.

This is about aspect, which is very important in Polish verbs.

• rozpakować = perfective, meaning to unpack something completely / as a finished action
• rozpakowywać = imperfective, meaning to be unpacking, to unpack in general, or repeatedly

In this sentence, the speaker is talking about a specific task that needs to be completed, so rozpakować sounds natural:

• muszę rozpakować dwa kartony = I need to unpack two boxes

If you said muszę rozpakowywać, it would sound more like focusing on the process or repeated activity, which is less natural here.

The same applies later with:

• schować = to put away / hide completely, as a completed action

Because karton is a masculine inanimate noun.

In Polish:

• dwa is used with masculine and neuter nouns
• dwie is used with feminine nouns

So:

• dwa kartony = two boxes/cartons
• dwie książki = two books
• dwie szafki = two cabinets

Since karton is masculine, dwa is correct.

It is accusative plural, because it is the direct object of rozpakować.

However, for masculine inanimate nouns, the accusative plural has the same form as the nominative plural.

So:

• nominative plural: kartony
• accusative plural: kartony

That is why it looks unchanged.

Compare with a masculine animate noun, where accusative would be different:

• nominative plural: studenci
• accusative plural: studentów

But with kartony, there is no visible difference.

In this sentence, karton most naturally means a cardboard box or moving box.

That fits well with the context of po remoncie and rozpakować.

Depending on context, karton can also mean things like a carton package, but here two boxes to unpack after a renovation is the most likely meaning.

Because w meaning in takes the locative case when it describes location.

• base form: przedpokój = hallway / entryway
• locative: przedpokoju

So:

• w przedpokoju = in the hallway / in the entryway

This is location, not movement.

Compare:

• w przedpokoju = in the hallway
• do przedpokoju = into the hallway

It can naturally be understood either way, but in practice it usually means the location of the unpacking situation as a whole.

So the sentence suggests something like:

• I need to unpack two boxes in the hallway and put everything into the cabinet.

A native speaker would usually understand that the boxes are there and/or the unpacking is happening there. Polish often allows this kind of slight ambiguity when the overall meaning is clear from context.

If someone wanted to be more explicit, they could rephrase it.

Because do is used for movement into something, while w is used for location inside something.

Here the idea is put everything into the cabinet, so Polish uses:

• do szafki = into the cabinet

If you said w szafce, that would describe where something is located:

• Wszystko jest w szafce = Everything is in the cabinet.

So:

• schować coś do szafki = to put something away into the cabinet
• coś jest w szafce = something is in the cabinet

After the preposition do, Polish uses the genitive case.

The basic form is:

• szafka = cabinet / cupboard / small closet / bedside cabinet, depending on context

After do, it becomes:

• do szafki = into the cabinet

So szafki here is genitive singular.

This is a very common pattern:

• do domu = into/to the house
• do pokoju = into/to the room
• do szafki = into the cabinet

Szafka is a small storage unit of some kind. Depending on context, it can be translated as:

• cabinet
• cupboard
• small cupboard
• locker
• bedside table

In this sentence, cabinet or cupboard is probably the safest translation. The exact English word depends on what kind of furniture the speaker means.

Also note that szafka is a diminutive-looking form, but in everyday Polish it is a very normal basic word.

Wszystko means everything, and it is a very natural choice here.

It refers to all the contents of the boxes without listing them.

So:

• schować wszystko do szafki = put everything into the cabinet

You could also say wszystkie rzeczy (all the things/items), but wszystko is shorter and more idiomatic in many contexts.

Because both verbs depend on muszę.

The structure is:

• muszę rozpakować... i schować...
• I have to unpack... and put away...

This is completely normal in Polish. One modal verb can govern more than one infinitive, just like in English:

• I have to clean the room and wash the dishes.
• Muszę posprzątać pokój i pozmywać naczynia.

So here the speaker has two tasks:

1. rozpakować dwa kartony
2. schować wszystko do szafki

It can mean both, depending on context.

The basic idea of schować is to place something somewhere out of the way / out of sight / into storage.

So in this sentence, put away is the best translation:

• schować wszystko do szafki = put everything away into the cabinet

In another context, it could mean hide:

• Schowaj klucze. = Hide the keys. / Put the keys away.

The exact meaning depends on the situation.

Yes, but it would mean something slightly different.

• dwa kartony = two boxes
• oba kartony = both boxes

Dwa kartony just gives the number. Oba kartony emphasizes that these are the two specific boxes being referred to.

So if the context already established exactly which two boxes are meant, oba kartony could work. But dwa kartony is perfectly natural and neutral.

Yes. Polish word order is fairly flexible, though not completely free. The sentence as given is natural and neutral:

• Po remoncie muszę rozpakować dwa kartony w przedpokoju i schować wszystko do szafki.

Other orders are possible, for example to emphasize location:

• Po remoncie muszę w przedpokoju rozpakować dwa kartony i schować wszystko do szafki.

Or to emphasize time:

• Muszę po remoncie rozpakować dwa kartony w przedpokoju i schować wszystko do szafki.

But the original version sounds very normal and balanced.

Yes, a few common things:

1. Cases after prepositions

   • po remoncie → locative
   • w przedpokoju → locative
   • do szafki → genitive

2. Aspect

   • rozpakować and schować are perfective, because the speaker is talking about completing tasks

3. No subject pronoun

   • muszę already means I must

4. Flexible word order

   • Polish allows more variation than English

5. One verb can cover two actions

   • muszę rozpakować... i schować...

So even though the sentence is not very long, it contains several very typical Polish grammar patterns.