Questions & Answers about Hún spurði hvaðan ég væri að koma þegar ég kom seint.
Væri is the past subjunctive of vera (to be).
In Icelandic, indirect questions and reported speech often use the subjunctive, especially after verbs like spyrja (to ask), segja (to say), and similar verbs.
So:
- Hún spurði: Hvaðan ert þú að koma? = direct question: She asked: Where are you coming from?
- Hún spurði hvaðan ég væri að koma. = indirect question: She asked where I was coming from.
A learner coming from English often expects an indicative form here, but Icelandic commonly prefers the subjunctive in this kind of subordinate clause.