Ate is the past tense of the verb 'eat'. Example sentence:
We ate many different samples of food at the garlic fair.
The lion ate the zebra carcasses.
"All the aborigines ate witchety grubs."
In the sentence, "You ate an apple." the noun is apple, a word for a thing.
Example sentence - He wanted dessert after he ate his dinner.
My hands were so glutinous after I ate the candy.
I ate a sandwich today
"He ate my cheeseburger"
I ate a scone.
There was bacteria on the loaf of bread he ate
The dinosaur ate his prey slowly.
I ate the pretzel with melted cheese.
The lion ate the zebra carcasses.
"The man ate in a ravenous manner." or... "The man ate ravenously."
Bobby ate the raisin he found in the couch
I ate peach cobbler today for lunch.
"All the aborigines ate witchety grubs."
i selfishly took and ate her dark chocolate.