Formal:
* Could you please enlighten me on the history of this ancient artifact?
* The professor's lecture enlightened the students on the complexities of quantum physics.
* The author's insights enlightened my understanding of the human condition.
Informal:
* I'm still a bit confused, can you enlighten me?
* Enlighten me, what's the gossip about the new teacher?
* That was an amazing movie, it really enlightened me about the power of hope.
Figurative:
* The sunrise over the mountains was a truly enlightening experience.
* The artist's paintings enlightened the viewer's soul.
Remember: "Enlighten" usually implies providing information or understanding, often in a way that clarifies or expands on existing knowledge.