the boy learned to play the piano when he was 5改为同义句

the boy learned to play the piano when he was 5改为同义句 He began to play the piano when he was seven.(同义句)He( )( )th 改同义句：He began to play the piano when he was 5 years old.He b I started to play the piano when I was six years old .(改为同义句 He began to learn the piano when he was?(改为同义句) He started to learn the piano when he was seven改为同义句 he could play the piano well when he was seven years old的同义句 同义句转换：He could play the piano very well when he was only fiv The boy went to school when he was five years old.（改为同义句） 1.I started to play the piano when I was six years old.(改为同义 My friends could play the piano when he was ten的同义句 英语同义句转换!1.Li yundi could play the piano when he was seven ye