Jeg vil læse bogen i ro, når jeg kommer hjem fra arbejde.

Because vil is a modal verb, and after a modal verb Danish uses the infinitive form of the main verb.

• vil = want to / will
• læse = to read

So:

• jeg vil læse = I want to read / I will read

You do not use the present tense læser after vil.

It can suggest either idea depending on context. In Danish, vil often covers both:

• future meaning: will
• desire/intention meaning: want to

In this sentence, it usually sounds like a plan or intention:
I’ll read the book in peace when I get home from work or I want to read the book in peace when I get home from work.

So the exact nuance depends on the situation, but both are close.

Because bogen means the book, while en bog means a book.

Danish often adds the definite article to the end of the noun:

• bog = book
• en bog = a book
• bogen = the book

So læse bogen means read the book, referring to a specific book.

I ro is a fixed expression meaning something like:

• in peace
• quietly
• without being disturbed

So læse bogen i ro means read the book in peace / undisturbed.

You could use roligt in other contexts, but i ro is a very natural expression here. It focuses more on the situation being calm and uninterrupted, not just on the manner of reading.

In standard Danish, a subordinate clause is usually separated by a comma.

Here:

• main clause: Jeg vil læse bogen i ro
• subordinate clause: når jeg kommer hjem fra arbejde

So the comma marks the beginning of the clause introduced by når.

This is very normal in written Danish.

Because når jeg kommer hjem fra arbejde is a subordinate clause. In Danish subordinate clauses, the word order is typically:

conjunction + subject + verb

So:

• når jeg kommer = when I come / when I get

Not:

• når kommer jeg — this sounds like a question structure and is not correct here.

This is an important difference from main-clause word order in Danish.

That is completely normal in Danish. After time words like når (when), Danish often uses the present tense to talk about the future.

So:

• når jeg kommer hjem literally: when I come home
• natural English: when I get home

Even though the event is in the future, Danish still uses kommer, not a special future form.

Because hjem already means homeward / home in this kind of movement expression.

Danish often says:

• komme hjem = come home / get home
• gå hjem = go home
• køre hjem = drive home

You normally do not say til hjem.

If you want to mention someone’s home as a place, you might say things like:

• til mit hjem = to my home

But in everyday movement expressions, just hjem is the natural word.

In Danish, some common places and activities are often used without the definite article, especially in everyday expressions.

So:

• fra arbejde = from work
• på arbejde = at work / at work place
• i skole = at school / in school

This is similar to English, where we usually say from work, not from the work.

You might say fra arbejdet in a more specific context, for example if you mean a particular workplace or piece of work, but fra arbejde is the normal everyday expression here.

Not always. Danish has several words that can translate as when, and learners often mix them up.

Here, når is correct because it refers to something expected or repeated in the future:

• når jeg kommer hjem = when I get home

Very roughly:

• når = when, in situations that are general, repeated, or future
• da = when, about a specific event in the past

For example:

• Da jeg kom hjem, var han allerede der. = When I got home, he was already there.
• Når jeg kommer hjem, vil jeg læse. = When I get home, I’ll read.

Yes, but the meaning changes a bit.

• jeg vil læse = I want to read / I’ll read
• jeg skal læse = I am going to read / I have to read / I’m supposed to read

So skal often sounds more like:

• a plan
• an obligation
• something scheduled

While vil sounds more like:

• intention
• willingness
• desire

Both are possible in some contexts, but they are not identical.

The æ sound is one English speakers often need to practice.

• læse is approximately pronounced like LEH-suh, but with a front vowel that is more open than the English ay in say
• the æ is somewhat like the vowel in English cat, but not exactly the same
• the final -e is a light schwa sound, like the a in sofa

Also:

• g in jeg is usually very soft or almost disappears in everyday speech
• når has a rounded vowel that may be tricky at first
• arbejde is often pronounced much more smoothly than its spelling suggests

If you are learning pronunciation, it helps to listen to native audio because Danish spelling and pronunciation often differ quite a lot.

Yes. You can say:

Når jeg kommer hjem fra arbejde, vil jeg læse bogen i ro.

That is also completely correct and very natural.

Notice what happens in the main clause after the subordinate clause comes first:

• vil jeg læse
• not jeg vil læse

This is because Danish main clauses follow the verb-second pattern. When the sentence starts with something other than the subject, the finite verb comes before the subject in the main clause.

So:

• Jeg vil læse bogen i ro, når jeg kommer hjem fra arbejde.
• Når jeg kommer hjem fra arbejde, vil jeg læse bogen i ro.

Both are good; the second version puts more emphasis on the time clause.