* Verb: This is the most common use. It means to come to be or to grow to be something.
* "The caterpillar will become a butterfly."
* Linking verb: It connects the subject of the sentence to a noun, pronoun, or adjective that describes or identifies the subject.
* "She became a doctor." (The verb connects "she" to the noun "doctor.")
* Adjective: This is less common, but it can sometimes be used to mean "suitable" or "appropriate."
* "A good writer must become a master of language."
Let me know if you have a specific sentence in mind, and I can tell you which part of speech "become" is!