What part of speech is sing?

"Sing" can be several parts of speech, depending on its use in a sentence. Here's a breakdown:

* Verb: This is the most common use. "The birds sing beautifully."

* Noun: "The singer had a powerful sing." Here, "sing" refers to the act of singing.

* Adjective: Less common, but possible in certain contexts. "He gave a sing-song voice to his story." Here, "sing-song" is an adjective describing the voice.

Let me know if you have a specific sentence in mind and I can help you determine the part of speech for "sing" in that context!