Efter jeg har fejet gulvet, sætter jeg kosten og fejebakken på plads.

Because Danish main clauses follow the verb-second (V2) rule.

When you begin the sentence with Efter jeg har fejet gulvet, that whole time clause takes the first position in the sentence. The finite verb of the main clause must then come next, so you get:

• Efter jeg har fejet gulvet, sætter jeg ...

If there were no opening clause, the normal order would be:

• Jeg sætter kosten og fejebakken på plads.

So the word order changes because the sentence starts with a subordinate clause.

Har fejet is the present perfect form of feje (to sweep).

It is used here because the sweeping is shown as completed before the next action happens:

• first: jeg har fejet gulvet
• then: jeg sætter kosten og fejebakken på plads

So it works like English after I have swept the floor.

In this sentence, har fejet emphasizes that the floor-sweeping is finished before the broom and dustpan are put away.

Yes. Efter at is also correct.

So both of these are possible:

• Efter jeg har fejet gulvet ...
• Efter at jeg har fejet gulvet ...

In everyday Danish, the at is often omitted, especially in speech and informal writing. The version without at sounds very natural.

They are in the definite form: the floor, the broom, the dustpan.

In Danish, definiteness is usually added to the end of the noun:

• et gulv = a floor

• gulvet = the floor

• en kost = a broom

• kosten = the broom

• en fejebakke = a dustpan
• fejebakken = the dustpan

So instead of putting a separate word like the in front, Danish often adds the definite ending directly to the noun.

Because Danish nouns have different grammatical genders.

• gulv is a neuter noun: et gulv
  Definite singular: gulvet

• kost and fejebakke are common gender nouns: en kost, en fejebakke
  Definite singular: kosten, fejebakken

A very common pattern is:

• en noun → definite -en
• et noun → definite -et

På plads here means something like back in its proper place, where it belongs, or simply away.

So sætter jeg kosten og fejebakken på plads means:

• I put the broom and dustpan back where they belong
• I put them away

It is a very natural Danish expression. It is not just a literal on place.

Fejet is the form used with har in the perfect tense. For a learner, it is easiest to think of it as the past participle of feje.

• feje = to sweep
• har fejet = have swept

So in the clause:

• jeg har fejet gulvet

the verb is built from:

• har
  • fejet

Yes. Danish very often writes compound nouns as one word.

So:

• fejebakke = dustpan

and the definite form is:

• fejebakken = the dustpan

This is completely normal in Danish. English often uses two words where Danish uses one compound word.

Sætte is natural here because sætte noget på plads is a common expression meaning put something back in its place.

Danish also has more specific placement verbs such as:

• stille = put something standing
• lægge = put something lying down

But when the meaning is more generally put away / return to its proper place, sætte ... på plads works very well.

So this sentence sounds natural and idiomatic.

Because Efter jeg har fejet gulvet is a subordinate clause, and it is followed by the main clause.

The comma marks the boundary between:

• Efter jeg har fejet gulvet
  and
• sætter jeg kosten og fejebakken på plads

That comma is normal in Danish when a subordinate clause comes first.

You can, but the nuance changes a little.

• Efter jeg har fejet gulvet emphasizes that the sweeping is finished first
• Efter jeg fejer gulvet sounds more general and may feel less focused on completion

So the version with har fejet is especially good when you want to show a clear sequence:

1. sweep the floor
2. put the broom and dustpan away

Most naturally, it sounds like a habit, a routine, or a general statement about what the speaker does.

That is because the main clause uses the present tense:

• sætter jeg

In Danish, the present tense is often used for regular actions or for describing what normally happens.

So the sentence can be understood as:

• whenever I have swept the floor, I put the broom and dustpan away

Context would decide whether it is a general habit or something connected to a specific situation.