Questions & Answers about Pimeä kammio olisi koristeltu kullalla.
How do we know olisi koristeltu is the conditional perfect passive?
The conditional perfect passive uses the auxiliary verb olla in its conditional form (olisi) followed by the past passive participle of the main verb. Notice that the auxiliary is always just olisi in this structure, never the passive oltaisiin.
How is the past passive participle koristeltu formed from the base verb?
The base verb is koristella (to decorate), which is a Type 3 verb. To form the past passive participle for Type 3 verbs, you simply take the consonant stem (koristel-) and add the passive ending -tu, giving us koristeltu.
Since the chamber is the object of the decorating, why is pimeä kammio in the nominative (dictionary) case?
In Finnish passive sentences, a total object (an entire, countable thing being acted upon) is placed in the nominative case rather than taking the standard -n object ending. Because the entire chamber would have been decorated, pimeä kammio is nominative.
Why does kullalla (gold) end in the adessive case -lla, which normally means "on"?