Jag måste skriva ut filen hemma i kväll.

Because måste is a modal verb. In Swedish, modal verbs such as kan, vill, ska, and måste are normally followed directly by the infinitive, without att.

So:

• Jag måste skriva = I must / have to write
• not Jag måste att skriva

This works much like English must write, not must to write.

Here skriva ut means to print out.

Literally, skriva means write, and ut often means out, but together skriva ut is a fixed expression that commonly means print or print out, especially with things like documents or files.

So in this sentence, skriva ut filen means print the file.

It is a particle verb: a verb plus a small word, in this case ut.

So grammatically, you should learn skriva ut as a unit, because the meaning is not always completely predictable from the parts.

Examples:

• Jag måste skriva ut filen.
• Jag skriver ut filen nu.
• Jag skrev ut filen i går.

Even though it is written as two words, it functions as one lexical unit.

Because filen is the definite form, meaning the file.

In Swedish, definiteness is often shown by adding an ending to the noun:

• en fil = a file
• filen = the file

So instead of using a separate word like English the, Swedish often attaches the definite article to the end of the noun.

Because Swedish usually puts the as a suffix on the noun.

So:

• fil = file
• filen = the file

This is one of the big differences from English. A native English speaker often expects something like the file, but Swedish usually builds that meaning into the noun itself.

Because hemma means at home, while hem usually means home as a destination, in the sense of movement to home / homeward.

Compare:

• Jag är hemma. = I am at home.
• Jag går hem. = I am going home.

In this sentence, the person is printing the file at home, not moving home, so hemma is the correct choice.

I kväll means this evening / tonight.

Yes, ikväll is also very common. In modern Swedish, both spellings are used, and ikväll is often seen as the more everyday one-word form.

So these are both possible:

• i kväll
• ikväll

The meaning is the same here.

Because Swedish often does not need a separate future tense form.

The idea of future time is already clear from i kväll, and the obligation is already shown by måste. So Jag måste skriva ut filen hemma i kväll naturally means that this has to happen tonight.

Swedish often relies on:

• time expressions, like i kväll, i morgon
• modal verbs, like ska, måste

instead of a special future ending.

A simple way to see it is:

• Jag = subject
• måste = finite verb
• skriva ut = infinitive verb phrase
• filen = object
• hemma = place
• i kväll = time

So the pattern is roughly:

Subject + finite verb + infinitive + object + place + time

That is a very natural word order in Swedish.

Because place and time expressions often come later in the sentence, especially after the main object.

A neutral order is:

• verb material first
• then object
• then place
• then time

So:

• skriva ut filen hemma i kväll

sounds very natural.

That said, Swedish word order is somewhat flexible, especially if you want to emphasize something.

Yes. You can say:

I kväll måste jag skriva ut filen hemma.

That is perfectly good Swedish and puts more focus on tonight.

But when you move something to the beginning in Swedish, the finite verb must still stay in the second position. That is why it becomes:

• I kväll måste jag ...

not

• I kväll jag måste ...

This is an important Swedish word-order rule, often called V2.

Often yes, but in many everyday contexts it can feel closer to have to.

So:

• Jag måste skriva ut filen
  can mean
• I must print the file
• I have to print the file

In ordinary speech, English speakers will often translate it as have to, depending on context.

Although it is spelled jag, in everyday spoken Swedish it is often pronounced more like ya.

So a learner may hear something closer to:

• ya måste skriva ut filen...

The exact pronunciation varies by region and speaking style, but this is very common and useful to know for listening comprehension.