when she was five years old ,she could swim怎么变同义句 给解释下为什么.急用

when she was five years old ,she could swim怎么变同义句 给解释下为什么.急用 she could swim in the river when she was 6years old改为同义句 同义句转换 When she was five years old ( )( )( )( )five kate could swim when she was four years old.同义句 Li Fang could swim when she was six years old.【改为同义句】 Li li fang could swim when she was six years old改为同义句 when she was five years old.同义句 Jim could swim when he was five years old.（改同义句） Jim ____ __ when he was five years old(变同义句) I could swim when I was 5 years old .同义句：I could swim ___ __ “She can swim when she was five years old.”哪里有错?怎样改正? she _ （can) swim very well when she was five years old.填什么形式