I övermorgon vill hon köpa en större garderob, eftersom den gamla är för liten.

I övermorgon means the day after tomorrow. In Swedish, time expressions can often be placed first in the sentence to emphasize when something happens.

Here, I övermorgon is in the first position, so the verb must come next:

• I övermorgon vill hon köpa ...

This is a very common Swedish pattern.

Also, many speakers simply say övermorgon without i, so both may be heard, but i övermorgon is a normal expression.

This is because of the Swedish V2 rule: in main clauses, the finite verb usually comes in the second position.

So if the sentence begins with a time phrase like I övermorgon, the verb must come next:

• I övermorgon
  • vill
    • hon
      • ...

Compare:

• Hon vill köpa en större garderob i övermorgon.
• I övermorgon vill hon köpa en större garderob.

Both are correct, but the word order changes because of V2.

Vill is the present tense of vilja, which means to want.

So:

• hon vill köpa = she wants to buy

After vill, the next verb stays in the infinitive form:

• vill köpa
• not vill köper

This is similar to English wants to buy, although Swedish does not need a separate word like to here.

Because garderob is a singular countable noun and it is indefinite here.

• en garderob = a wardrobe
• en större garderob = a larger wardrobe

You need the article en just as you would need a in English.

If it were definite, it would be different:

• den större garderoben = the larger wardrobe

Because stor is an irregular adjective.

Its forms are:

• stor = big, large
• större = bigger, larger
• störst = biggest, largest

So:

• en större garderob = a larger wardrobe

This is one of the common adjective patterns you simply have to learn.

Comparative adjectives in Swedish usually do not take the extra endings that basic adjectives often do.

Compare:

• en stor garderob
• ett stort hus

But in the comparative:

• en större garderob
• ett större hus

So större stays the same for en-words and ett-words.

Eftersom means because and introduces a reason:

• ..., eftersom den gamla är för liten.
• ..., because the old one is too small.

It is a subordinating conjunction, which means it starts a subordinate clause.

Other Swedish words that can also express because include därför att, but eftersom is very common and natural here.

Because eftersom introduces a subordinate clause, and subordinate clauses usually have more straightforward subject-verb order in Swedish:

• eftersom den gamla är för liten

Here:

• den gamla = subject
• är = verb

Compare this with the main clause, where Swedish uses the V2 rule:

• I övermorgon vill hon köpa ...

So the sentence shows two important patterns at once:

• main clause: verb in second position
• subordinate clause: subject before verb

Den gamla here means the old one.

The noun garderob is understood from the context, so Swedish does not need to repeat it. This is very common.

So instead of saying:

• den gamla garderoben är för liten

the sentence says simply:

• den gamla är för liten

Because garderob is an en-word, Swedish uses den, not det.

Because after den, the adjective takes the definite form:

• en gammal garderob = an old wardrobe
• den gamla garderoben = the old wardrobe
• den gamla = the old one

So gamla is the definite form of gammal.

This happens even when the noun is left out, as in this sentence.

No. In this sentence, för means too.

• för liten = too small

This is a very common Swedish pattern:

• för dyr = too expensive
• för stor = too big
• för kall = too cold

So here för does not mean the English preposition for.

Yes, absolutely.

Both are correct:

• eftersom den gamla är för liten
• eftersom den gamla garderoben är för liten

The version in your sentence sounds natural because once garderob has already been mentioned, Swedish can shorten it to den gamla.

English does the same thing:

• the old one instead of the old wardrobe

In everyday Swedish, punctuation before subordinate clauses is somewhat flexible, and many writers do use a comma here, especially when the sentence is a bit longer.

So this is normal:

• I övermorgon vill hon köpa en större garderob, eftersom den gamla är för liten.

You may also see Swedish written with fewer commas than in English, especially in simpler sentences. The comma here helps readability, but the grammar of the sentence does not depend on it.