this is one of the best book that(have)ever been written,为什么括号里面不可以是(has)?

题目

this is one of the best book that(have)ever been written,为什么括号里面不可以是(has)?

答案

of 前面的是one所以用have
如果of前面是the one 才用 has!固定搭配 千万要背出哦