* Formal: "I would like to inquire about the availability of tickets for the upcoming concert."
* Informal: "Could you inquire about the best place to get tacos in town?"
* Figurative: "The old man's eyes seemed to inquire about the meaning of life."
* Passive voice: "The police were inquiring into the cause of the accident."
Let me know if you'd like me to create a sentence using "inquire" in a specific context!