what a to b is what c to d

A is to b what c is to d A is to B as/what C is to D what A is to B is what C is to D A is to B what C is to D 的句型,将what从句放句首 A is to B what C is to D 的句型,将what从句放居首 请问：1.A is to B ,what C is to D.what 是做什么词? A is to B what C is to D what 在句中是什么成份? 关于A is to B what C is to D 的句式 谁知道“A is to B what C is to D”的例句? A is to B what C is to D 是什么句型? 帮忙分析一下这个句子的成分：A is to B what C is to D . A is to B what C is to D 这种英语句式可否用否定形式