The noun in "You ate lunch." is lunch.
B Before lunch I played volleyball after lunch I did again
Then your friend ate your lunch..?
ate
Lions eat what they ate for lunch and what they ate for dinner.
Danny ate a pile of hot wings for his birthday.
He ate a mongo for lunch
He ate lunch.
they ate berries.
Yes eg He ate my lunch.
Pythagoras also ate his lunch!
Walter Cunningham ate lunch with Jem and Scout on their first day of school.