1、八岁 - eight years old。

2、eight英[eɪt]美[et]，num.八; 八个; 第八;n.八; 八人（或物）一组; 八人划船队;adj.八个的;

3、例句：Her mother talked her to diet when she was only eight years old.她只有八岁时，母亲就劝她节食。I was eight years old when we made a model plane together. 我八岁的时候我们一起做了个飞机模型。