Breakdown of Hon brukade dagdrömma om sin idol.
hon
she
sin
his/her/its/their own (en-word)
om
about
bruka
to usually do
Questions & Answers about Hon brukade dagdrömma om sin idol.
Why is there no att before dagdrömma?
Brukade (used to) acts as an auxiliary (helping) verb here. In Swedish, auxiliary verbs are followed directly by the bare infinitive of the main verb, so you just use dagdrömma without the infinitive marker att.
Why does the sentence use sin instead of hennes for "her"?
Sin is a reflexive possessive pronoun. It shows that the idol belongs to the subject of the sentence (Hon). If you said hennes idol, it would mean she was daydreaming about another woman's idol.
Does the verb dagdrömma always take the preposition om?
Yes! Just like the base verb drömma (to dream), you always use the preposition om to express what you are dreaming or daydreaming about.
How would this sentence look if it were happening in the present?
You would change the past tense brukade (used to) to the present tense brukar (usually do). Hon brukar dagdrömma means she usually daydreams.