Can any part of speech be used as interjections?

While interjections are traditionally considered their own part of speech, almost any part of speech can be used as an interjection, depending on context and intention.

Here's why:

* Interjections express strong emotion, surprise, or a sudden feeling. They often stand alone, but can also be part of a sentence.

* Any word or phrase can be used to convey strong emotions.

Examples:

* Nouns: "Goodness!" "Wow!"

* Verbs: "Stop it!" "Help!"

* Adjectives: "Wonderful!" "Awful!"

* Adverbs: "Seriously!" "Ouch!"

* Prepositions: "Out!" "Away!"

* Conjunctions: "Well!" "Oh, boy!"

Important Note: The key is that the word or phrase is used to express a sudden outburst of emotion, not its typical grammatical function.

Let me know if you'd like more examples or have any other questions!