Write a sentence using a verb in the conditional mood and then explain why the sentence uses the conditional mood.
If I had known about the event, I would have attended it.
This sentence uses the conditional mood as it describes a hypothetical scenario in the past. The speaker didn't have the knowledge of the event, but they are imagining what they would have done if they had known about it. The verb "had known" is in the conditional mood because it expresses a condition that didn't happen in reality.