请对此句进行详细的语法解释.who to do it is what she wants to know.

请对此句进行详细的语法解释.who to do it is what she wants to know.
请对此句进行详细的语法解释.who to do it is what she wants to know.

请对此句进行详细的语法解释.who to do it is what she wants to know.
这里面有两个谓语动词：is ,wants；围绕这两个词分别构建起了两个句子,一个是主句,一个是从句.
【who to do it】 is 【what she wants to know】
主 系 表（表语从句）

谁做的这是她想知道什么。