How old is the old man?---------He is sixty---sixth哪里错了?

题目

How old is the old man?---------He is sixty---sixth哪里错了?

答案

那个老人多大年纪了?
应回答：He is sixty-six.他六十六岁了.
sixty-six 是基数词,“六十六”
sixty-sixth 是序数词,“第六十六”