Hello there!
The details from the narration relate Rainsford’s impression of Zaroff are
*almost bizarre quality about the general's face
*his thick eyebrows and pointed military mustache were as black as the night
*His eyes, too, were black and very bright
*the face of an aristocrat
Those are descriptive details that allow us to know how is the reaction and impression of Rainsford.
Hope this helps.
1. The school's principal said that the school must follow certain principles in order to be at its best.
2. The groom wanted to have their wedding on an isle, while the bride didn't really care where it took place, she simply wanted to walk down the aisle and get married.
3. In class today, we're going to gave a lesson on how to lessen our expenses.
4. The idle man simply sat there lazily as he stared at a poster of his idol, Michael Jackson.
5. She was so vain, she wanted to look perfect, but a huge vein in the middle of her forehead was getting in the way.
Introduced is a regular verb because all you did was add -ed at the end. Good luck!