Du kan låne min bold, bare du afleverer den efter kampen.

It means borrow in this sentence: Du kan låne min bold = You can borrow my ball.

A useful thing to know is that Danish låne can cover both ideas that English separates into borrow and lend. The direction is usually understood from the sentence structure and context.

• Du kan låne min bold = you borrow my ball
• Jeg kan låne dig min bold = I can lend you my ball

So English forces you to choose between two verbs, while Danish often uses låne for both.

Here bare means as long as, provided that, or on condition that.

So:

• bare du afleverer den efter kampen = as long as you return it after the match

This is a very common use of bare in spoken and written Danish. It does not mean just in this sentence.

Compare:

• Jeg vil bare hjælpe. = I just want to help.
• Du må gerne komme, bare du ringer først. = You may come, as long as you call first.

Because bare introduces a subordinate clause.

In Danish:

• Main clauses usually follow V2 word order: the finite verb comes in second position.
• Subordinate clauses usually have subject + verb order.

So:

• Main clause: Du kan låne min bold
• Subordinate clause: bare du afleverer den efter kampen

That is why you get du afleverer, not afleverer du.

Compare:

• Main clause question: Afleverer du den? = Are you returning it?
• Subordinate clause: ... bare du afleverer den = ... as long as you return it

Because Danish often uses the present tense for future meaning when the context makes the time clear.

Here, efter kampen clearly shows that the action happens later, so Danish does not need a special future form.

• du afleverer den efter kampen = you return it after the match

This is very natural in Danish.

You could also use a future form in some contexts, but the present tense is the normal, simple choice here.

Aflevere means something like:

• hand in
• return
• give back
• sometimes deliver

In this sentence, the best translation is return or give back.

It is often used when something should be returned to the right person or place:

• aflevere en bog på biblioteket = return a book to the library
• aflevere sine nøgler = hand in one’s keys
• aflevere bolden = give the ball back

So here it has the sense of returning the ball after the match.

Because Danish uses a pronoun to refer back to something already mentioned.

• min bold = my ball
• den = it

Since bold is a common gender noun, the pronoun is den.

So:

• Du kan låne min bold, bare du afleverer den...
• literally: You can borrow my ball, as long as you return it...

Using bolden instead would repeat the noun instead of replacing it with a pronoun. That is possible in some contexts, but den is the natural choice here.

Because bold is a common gender noun in Danish, not a neuter noun.

Danish possessives agree with the gender/number of the noun:

• en bold → min bold
• et hus → mit hus
• plural nouns → mine bøger

So the fact that it is min tells you that bold is an en-word.

Kampen means the match/game, while en kamp means a match/game.

In this sentence, efter kampen suggests a specific match that both speaker and listener know about.

• efter kampen = after the match
• efter en kamp = after a match

So the definite form is used because the match is understood as a specific one.

Here it means permission.

• Du kan låne min bold = You can / may borrow my ball

In English, can can express either ability or permission, and Danish kan can also do both. In this context, it is clearly permission because the speaker is allowing the other person to use the ball.

Yes, but the nuance is a little different.

• bare du afleverer den efter kampen = as long as you return it after the match
• hvis du afleverer den efter kampen = if you return it after the match

With bare, the sentence sounds more like a condition the speaker sets. It often feels very natural in everyday Danish when giving permission.

So bare du... is especially good for:

• permission with a condition
• a slightly conversational tone

Yes, it is completely natural.

It sounds like everyday spoken or written Danish. A native speaker would easily say something like this when allowing someone to borrow something on one condition.

Its structure is also very typical:

• permission in the main clause: Du kan låne min bold
• condition in the subordinate clause: bare du afleverer den efter kampen