Min søster har det med at komme meget punktligt, selv når bussen er forsinket.

Har det med at is an idiomatic expression meaning tends to or has a habit of.

So:

• Min søster har det med at komme meget punktligt
  = My sister tends to arrive very punctually

You should not translate it word for word. Literally, it looks something like has it with to, but that is not how it works in English. Treat have det med at + infinitive as a fixed pattern.

Examples:

• Han har det med at glemme sine nøgler.
  = He tends to forget his keys.
• Jeg har det med at vågne tidligt.
  = I tend to wake up early.

In this expression, det does not have a separate concrete meaning like it usually does. It is just part of the fixed idiom have det med at.

So learners should memorize the whole structure:

• have det med at + infinitive

and not try to interpret det separately.

This is similar to how some expressions in English contain words that are not translated literally when you learn them as a chunk.

Because komme is in the infinitive, and after har det med Danish normally uses:

• at + infinitive

So:

• har det med at komme
• har det med at glemme
• har det med at sige

This is like English to in tends to come.

Because after har det med at, Danish uses the infinitive form, not the present-tense form.

Compare:

• Hun kommer punktligt.
  = She arrives punctually.
  Here kommer is present tense.

• Hun har det med at komme punktligt.
  = She tends to arrive punctually.
  Here komme is infinitive because it follows at.

So kommer is a finite verb, while komme is the basic infinitive form.

Because punktligt is an adverb here.

• punktlig = punctual, on-time
  This is an adjective.
• punktligt = punctually
  This is the adverb form.

In the sentence, the word describes how she comes/arrives, so Danish uses the adverb:

• komme meget punktligt

Compare:

• Hun er punktlig.
  = She is punctual.
  Adjective, describing hun.

• Hun kommer punktligt.
  = She arrives punctually.
  Adverb, describing kommer.

A lot of Danish adverbs are formed by adding -t to the adjective.

Meget means very here. It modifies the adverb punktligt.

So:

• meget punktligt = very punctually

Compare:

• meget stor = very big
• meget hurtigt = very quickly
• meget punktligt = very punctually

Even though meget can also mean much, in this sentence it clearly means very.

Yes. In Danish, komme is very often used where English would say come or arrive, depending on context.

So komme punktligt can naturally mean:

• come punctually
• arrive punctually
• show up on time

Danish also has ankomme, which means arrive, but it is often a bit more formal or specific.

Compare:

• Hun kom klokken otte.
  = She arrived at eight.
• Toget ankommer klokken otte.
  = The train arrives at eight.

In everyday speech, komme is extremely common.

Selv når means even when.

In this sentence:

• selv når bussen er forsinket
  = even when the bus is delayed

Breakdown:

• selv = even
• når = when

Together they introduce a situation that makes the main statement more surprising.

Because after når introducing a subordinate clause, Danish normally keeps the subject before the finite verb:

• når bussen er forsinket

Structure:

• når
  • subject + verb

So:

• når bussen er forsinket
• når hun kommer hjem
• når jeg har tid

This is different from main-clause word order in Danish, where the verb often comes in second position.

Bussen is the definite form, meaning the bus.

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

• en bus = a bus
• bussen = the bus

So in the sentence:

• selv når bussen er forsinket
  = even when the bus is delayed

This is one of the biggest differences from English: Danish often puts the at the end of the noun instead of using a separate word.

It functions as an adjective here, meaning delayed.

So:

• Bussen er forsinket.
  = The bus is delayed.

You can think of forsinket as a past participle that is being used adjectivally, which is very common in Danish.

Other similar examples:

• Døren er lukket.
  = The door is closed.
• Maden er lavet.
  = The food is made / prepared.

Because the sentence is describing a general habit or tendency that is true now.

• Min søster har det med at ...
  = My sister tends to ...

This is not about one single event. It describes her usual behavior, so the present tense is the natural choice.

If you wanted to talk about a past tendency, you could say:

• Min søster havde det med at komme meget punktligt.
  = My sister tended to arrive very punctually.

Yes. Danish has several ways to express the same idea. For example:

• Min søster plejer at komme meget punktligt.
• Min søster kommer som regel meget punktligt.

These also mean that she usually arrives very punctually.

But har det med at has a slightly special feel: it often emphasizes a repeated tendency or characteristic habit.

So the original sentence is perfectly natural, but it is good to know there are alternatives.

It is understandable and grammatically correct. But in everyday Danish, people might often prefer expressions like:

• til tiden = on time
• altid til tiden = always on time

For example:

• Min søster har det med at komme til tiden.
• Min søster kommer næsten altid til tiden.

Still, komme meget punktligt is not wrong. It simply sounds a bit more formal or descriptive than some everyday alternatives.

A too-literal translation would be something like:

• My sister has it with to come very punctually, even when the bus is delayed.

That sounds unnatural in English. The natural English version is:

• My sister tends to arrive very punctually, even when the bus is delayed.

This is a good reminder that Danish idioms like har det med at should be learned as complete expressions, not word by word.