Om du ändå ska till centrum, kan du passa på att lämna tillbaka boken?

Om means if and introduces a conditional clause:

• Om du ändå ska till centrum = If you’re going to the town centre anyway

This first part sets up the condition for the request in the second part.

Here, ändå means anyway / in any case.

So:

• Om du ändå ska till centrum = If you’re going there anyway

It adds the idea that the person is already planning to go, so the extra task would not be much trouble.

A learner should notice that ändå is very common in Swedish and can have slightly different shades of meaning depending on context, but here anyway is the natural translation.

Ska here means are going to in the sense of plan/intention.

• du ska till centrum = you’re going to the town centre
• literally, it is closer to you shall/are going to go to the town centre

Swedish often uses ska when talking about something someone is planning to do.

By contrast:

• går = walk/goes
• åker = goes/rides/drives/travels

So ska does not describe how the person goes there; it only says that they intend to go.

Till means to, so it shows movement toward a place:

• ska till centrum = are going to the town centre

Compare:

• i centrum = in the town centre
• till centrum = to the town centre

So till is used because the sentence is about going there, not already being there.

Centrum usually means the town centre / city centre / downtown area, depending on context.

In Swedish, centrum is often used without an article in this kind of expression:

• gå till centrum
• åka in till centrum

That is very natural Swedish. English usually needs the: go to the town centre.

This is because Swedish has verb-second word order in main clauses.

The sentence begins with a subordinate clause:

• Om du ändå ska till centrum

After that, the main clause starts, and the finite verb must come first:

• kan du passa på ...

So the word order is:

1. subordinate clause
2. finite verb in the main clause
3. subject

That is why it is:

• ..., kan du ... not
• ..., du kan ...

This is a very important Swedish pattern.

It is grammatically a question, but in this sentence it functions as a polite request:

• kan du passa på att lämna tillbaka boken?
• could/can you take the opportunity to return the book?

In everyday Swedish, kan du ... ? is a very common way to ask someone to do something, just like can you ... ? in English.

So the speaker is not really asking about ability; they are making a request.

Passa på att is a very common expression meaning:

• take the opportunity to
• while you’re at it
• make use of the chance to

So:

• kan du passa på att lämna tillbaka boken? means something like:
• can you take the opportunity to return the book?
• can you return the book while you’re at it?

It suggests that since the person is already going to the town centre, it would be convenient to do this extra thing too.

Lämna tillbaka means return in the sense of giving something back.

• lämna = leave / hand over
• tillbaka = back

Together they form the idea give back / return.

Examples:

• lämna tillbaka boken = return the book
• Jag måste lämna tillbaka den imorgon. = I have to return it tomorrow.

This is a very useful everyday expression.

Boken means the book.

Swedish usually puts the definite article at the end of the noun:

• bok = book
• boken = the book

So:

• lämna tillbaka boken = return the book

It is definite because both speaker and listener already know which book is being talked about.

Yes, in some contexts the parts can be separated, especially when there is an object pronoun.

Compare:

• lämna tillbaka boken = return the book
• lämna tillbaka den = return it

You may also hear structures where the object comes between parts in certain verb constructions, but for learners, the safest basic pattern is:

• lämna tillbaka + object

Treat it as a fixed expression meaning return/give back.

The tone is natural, conversational, and mildly polite.

It sounds like someone asking a practical favor:

• If you’re going to the town centre anyway, could you return the book?

The use of ändå and passa på att makes it sound reasonable and convenient rather than demanding. The speaker is basically saying: since you’re already going there, maybe you can do this too.

Yes. Even if the meaning is already clear, it helps to know the nuance. Natural English versions include:

• If you’re going to the town centre anyway, can you return the book?
• If you’re going into town anyway, could you return the book?
• If you’re heading to the centre anyway, could you drop off the book?
• If you’re going there anyway, can you take the opportunity to return the book?

The Swedish sentence has a slight while you’re at it feeling because of passa på att.