How do you make these two sentences turn into sentences with a nominative absolute???
"Since the waves had washed away much of the cliff, the house was in danger."
"As the game was over, the contestants quietly filed out of the room."
Here's a clue as to how you can do that:
A nominative absolute is a noun phrase that begins or ends a sentence. The phrase has no grammatical connection with the rest of the sentence. Most nominative absolutes contain a participle or participial phrase which modifies the noun or pronoun.
Example: The weather being rainy, we decided to postpone the trip. (Nominative absolute in italics)