Hello Hyunwoo
Wow Nice French! I've watched your spectacular performance! Nice to have leearn about "Poody" or "Poudi". Was it a French poodle? Poody the poodle...
As you requested one mistake I heard was " il y a 5 années."
You should have said "il y a 5 ans".
The difference between the 2, is that "année" stressed on the time passing by.
Example:
Année => Je suis resté aux Etats-Unis pendant une année.
I stayed in the US for 1 year.
(the fact that I stayed for 12 months is stressed)
An(s) => Je suis allé aux Etats-Unis il y a 2 ans.
I went to the US 2 years ago.
(here the time going by is not as important, but rather fact that I was in the US in 2006 - knowing that we are in 2008)
If you need further clarification, don't hesitate to send a post!
Angèle
