Questions & Answers about Killen var för oerfaren för att leda gruppen.
Why does the sentence use för twice?
The first för means "too", modifying the adjective oerfaren (too inexperienced). The second för is part of the phrase för att, which connects to the infinitive verb leda. Together, they build the Swedish equivalent of the "too [adjective] to [do something]" structure.
Why do we need för att before the verb instead of just att?
In English, you simply use "to" (too inexperienced to lead), but Swedish requires för att (literally "in order to") when expressing the result or consequence of the "too" condition. Using just att leda here is a common learner mistake but sounds incomplete in Swedish.
How is the word oerfaren formed?
It is built using the prefix o-, which works just like the English prefixes "un-" or "in-" to create an opposite meaning. The root word is erfaren (experienced), so o- plus erfaren translates to "inexperienced".
Is killen a formal or informal word?
Kille (here in its definite form, killen) is a casual but extremely common everyday word meaning "guy" or "boy". It is much less formal than mannen (the man) and more conversational than pojken (the boy).