He started learning English when he was 10.(改为同义句）

He started learning English when he was 10.(改为同义句） He started to learn English when he was 3.(改为同义句） He started to learn English when he was three（改为同一句） He started swimming when he was four years old.(改为同义句） He started to learn the piano when he was seven改为同义句 When he was five ,he started playing the piano .(改为同义句) He started learning English when he was three years old.(改写同 tom started swimming when he was five years old改为同义句 He started to learn English in 1999.改为同义句 I started learning English when I was nine years old 改成同义句 I i started learning english when i was 12改同义句 改为同义句：He began to learn english when he was six years old.