Hun står stærkt i sit nye job, fordi hun allerede har meget erfaring.

Yes, literally står stærkt means stands strongly, but in Danish it is a common idiomatic expression. It means something like:

• is in a strong position
• is doing well
• has a solid standing

So in this sentence, Hun står stærkt i sit nye job means that she is in a good, secure, or successful position in her new job.

Because stærkt is being used adverbially here.

• stærk = strong (adjective)
• stærkt = strongly / in a strong way (adverb-like use)

In står stærkt, the word describes how she stands or how strong her position is, not directly describing hun as a person.

Compare:

• Hun er stærk. = She is strong.
• Hun står stærkt. = She is in a strong position.

Danish often uses the reflexive possessive sin/sit/sine when the owner is the subject of the sentence.

Here, the subject is hun, and the job belongs to that same person, so Danish uses:

• sit nye job = her own new job

You choose the form based on the gender/number of the noun:

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

Since job is a neuter noun (et job), it becomes sit job.

If you said hendes nye job, that would sound more like emphasizing her job, not someone else’s, or it could refer to another woman depending on context.

Yes. In Danish, nouns have grammatical gender, and job is a neuter noun:

• et job = a job

Because of that, the reflexive possessive must be the neuter singular form:

• sit job

So:

• sin bil because bil is common gender (en bil)
• sit job because job is neuter (et job)
• sine bøger because bøger is plural

Because erfaring is often used as an uncountable noun in Danish, much like experience in English.

So:

• meget erfaring = a lot of experience

This is the most natural phrasing here.

You can say erfaringer when you mean separate experiences or specific instances:

• Hun har mange interessante erfaringer. = She has many interesting experiences.

But in a work-context sentence like this, meget erfaring is the normal choice.

In Danish main clauses, adverbs such as allerede often come before the non-finite part of the verb phrase, but after the subject when the finite verb is in second position.

Here the structure is:

• hun = subject
• allerede = adverb
• har = finite verb
• meget erfaring = object/complement

Actually, in this sentence, hun allerede har is inside a fordi clause, which is a subordinate clause. In subordinate clauses, the adverb typically comes before the finite verb:

• fordi hun allerede har meget erfaring

Compare with a main clause:

• Hun har allerede meget erfaring.

So the placement of allerede is strongly tied to clause type.

Because fordi introduces a subordinate clause.

In Danish:

• Main clauses usually follow verb-second word order.
• Subordinate clauses usually place adverbs before the finite verb.

Compare:

• Main clause: Hun har allerede meget erfaring.
• Subordinate clause: fordi hun allerede har meget erfaring

So after fordi, Danish switches to subordinate clause word order. This is a very important pattern to learn.

Fordi means because.

It introduces the reason for something, and yes, it normally starts a subordinate clause, which means you usually get subordinate word order after it:

• fordi hun allerede har meget erfaring

This is different from English, where the word order usually stays the same after because.

Because erfaring here is being used as an uncountable noun.

In English, we also usually say:

• She has a lot of experience

not

• She has an experience in this meaning

So Danish simply says:

• har meget erfaring = has a lot of experience

No article is needed.

You could, but it would not mean exactly the same thing.

• Hun står stærkt i sit nye job = She is in a strong position in her new job.
• Hun er stærk i sit nye job = She is strong / capable in her new job.

The first sounds more idiomatic and more about her position, standing, or prospects. The second is more directly about her personal ability.

The sentence has two parts:

1. Hun står stærkt i sit nye job
   Main clause:

   • Hun = subject
   • står = verb
   • stærkt = adverbial expression
   • i sit nye job = prepositional phrase

2. fordi hun allerede har meget erfaring
   Subordinate clause:

   • fordi = because
   • hun = subject
   • allerede = adverb
   • har = verb
   • meget erfaring = object/complement

So the whole sentence means that she is doing well in her new job, and the reason is that she already has a lot of experience.