He started to learn the piano when he was five years old.改成同义句还有：1.he was first in the competition 2.I took part in the school football team last year.注意：第一个用 at the age ofhe started _ the piano _ _ _ five .(注意格数）
He started to learn the piano when he was five years old.
改成同义句
还有：
1.he was first in the competition
2.I took part in the school football team last year.
注意：
第一个用 at the age of
he started _ the piano _ _ _ five .(注意格数）
He started to learn the piano at the age of five years old.
2.He the winner in the compettion.
3. I joined in the school football team last year.
He did not know how to play the piano until he was five.
He took the first place in the competition.
I joined the school football team last year.
He started learning the piano at the age of five.
He winned the competition.
I joined in the school football team last year.
He started to learn the piano at the age of five
1. No one is better than him in the competition/ he took the first place in the competiton
2. I attended the school football team last year .