Final answer:
The part of speech in the sentence 'Ouch! I have a splinter in my finger.' is an interjection.
Explanation:
Identify the part of speech in the sentence 'Ouch! I have a splinter in my finger.' It is an interjection, which expresses a sudden emotion or sentiment.
In the parts of speech poem, it is mentioned that interjections are words like 'ouch' that signify strong emotion or feeling.
Interjections are standalone words and phrases used to convey emotion and are usually followed by an exclamation mark.
Learn more about Parts of speech here:
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