I chose these senteces from The Eight Parts of Speech:
"The cat sleeps on the sofa."
The (article), cat (noun), sleeps (verb), on (preposition), the (article), sofa (noun).
"She quickly finished her homework."
She (pronoun), quickly (adverb), finished (verb), her (possessive pronoun), homework (noun).
"Wow! That was amazing."
Wow (interjection), That (pronoun), was (verb), amazing (adjective).
These helped me understand the eight parts of speech. Hope they can help you too!