Questions & Answers about Har hun noensinne vært her?
Because this is a yes/no question in Norwegian. In main clauses, Norwegian usually has subject–verb order, but in yes/no questions the finite verb comes first.
- Statement: Hun har noensinne vært her is not natural, but the normal statement pattern would still place the verb after the subject.
- Question: Har hun noensinne vært her? = Has she ever been here?
So har comes first because Norwegian forms this kind of question by inverting the usual subject and verb order.
Noensinne means ever.
In this sentence, it asks whether something has happened at any time up to now:
- Har hun noensinne vært her?
- Has she ever been here?
It is a slightly stronger or more formal-sounding way to say ever. In everyday speech, many people would also use noen gang.