为什么这里用 what ：Nine is to three what three is to one.

题目

为什么这里用 what ：Nine is to three what three is to one.
Nine is to three what three is to one.,为什么这里用what?

答案

引导比较状语从句 固定搭配what做的是宾语,是is 的宾语结构为A is to B,what C is to D或者What A is to B,so is C to Deg;A nest is to a bird what a house is to a manHoney is to a bee what milk is to a cow...