Hun er generøs og deler selvfølgelig sin madpakke, hvis nogen har glemt deres egen.

Because Danish, like English and especially German, often forms compound nouns as a single word. So:

• mad = food
• pakke = package/pack

Together, madpakke becomes one noun with a specific meaning. This is very normal in Danish.

Because deler is the present tense form of the verb at dele (to share / to divide).

• at dele = to share
• deler = shares / is sharing

Since the subject is hun (she), and the sentence is stating what she does in general, Danish uses the present tense: hun deler.

Because Danish can leave out the subject in the second part when the subject is still the same. So:

• Hun er generøs = She is generous
• (Hun) deler selvfølgelig sin madpakke = (She) of course shares her packed lunch

The second hun is understood, so it does not need to be repeated.

Selvfølgelig means of course, naturally, or obviously.

In this sentence, it comes after the finite verb deler, which is a very normal place for this kind of adverb in a main clause:

• Hun deler selvfølgelig sin madpakke

That placement sounds natural and neutral. It tells us that sharing her lunch is the expected thing for a generous person to do.

Because sin is a reflexive possessive. It refers back to the subject of the same clause.

Here, the subject is hun, so:

• sin madpakke = her own packed lunch

If you said hendes madpakke, it would usually mean her lunch in a non-reflexive way, often suggesting it belongs to another female person, not necessarily the subject.

So in this sentence, sin is the correct choice because the lunch belongs to hun herself.

These forms depend on the gender and number of the noun being possessed:

• sin = common gender singular
• sit = neuter singular
• sine = plural

Madpakke is a singular en-word (common gender), so the correct form is sin:

• sin madpakke

If the noun were neuter, you would use sit. If it were plural, you would use sine.

Hvis means if and introduces a condition.

So:

• hvis nogen har glemt deres egen = if someone has forgotten their own

The idea is that she shares her lunch on the condition that someone else forgot theirs.

Here nogen means someone or anyone, depending on how literally you translate it into English.

In this sentence, the most natural meaning is:

• if someone has forgotten their own

So nogen refers to an unspecified person.

Because nogen is used for an unspecified person or any person, while nogle usually means some and is typically plural.

Compare:

• nogen = someone / anyone
• nogle = some / some people

Since the sentence is talking about an unspecified person who may have forgotten a lunch, nogen is the right word.

Har glemt is the present perfect:

• har = has/have
• glemt = forgotten

So har glemt means has forgotten.

This tense is used because the forgetting happened before the sharing, but it is still relevant now. In other words, the person forgot their lunch, and that is why she shares hers.

This is a very natural question.

Deres here works much like English singular their. Since nogen is an unspecified person, deres avoids choosing a gender and sounds natural in modern Danish.

So:

• nogen har glemt deres egen = someone has forgotten their own

You may also hear sin egen in similar sentences, because nogen is the subject of that clause and reflexive reference is possible. But deres is very common when the person is indefinite and gender is unknown or irrelevant.

Egen means own. It adds emphasis:

• deres egen = their own

Without egen, the sentence would still make sense, but egen makes it clearer that the person forgot their own lunch, not someone else’s.

Because the noun madpakke is understood and does not need to be repeated.

So:

• deres egen really means deres egen madpakke

This is very common in Danish, just as in English:

• her own = her own lunch
• their own = their own lunch

The omitted noun is easy to recover from the earlier part of the sentence.

Just like sin/sit/sine, egen changes form to match the noun:

• egen = common gender singular
• eget = neuter singular
• egne = plural

The hidden noun here is madpakke, which is a common gender singular noun, so egen is correct:

• deres egen (madpakke)

Because Danish main clauses and subordinate clauses have different word order patterns.

In a main clause, Danish usually follows verb-second order. But after a subordinating word like hvis, Danish uses more regular subordinate-clause order:

• hvis nogen har glemt deres egen

So the subject (nogen) comes before the finite verb (har). That is why it is not hvis har nogen glemt.

Because in standard Danish writing, a subordinate clause introduced by a word like hvis is often separated by a comma.

So:

• Hun er generøs og deler selvfølgelig sin madpakke, hvis nogen har glemt deres egen.

That comma marks the beginning of the if-clause. Danish comma rules are a bit stricter and more visible than English ones in many cases.