【英语】关于“A is to B what C is to D”句型

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 A is to B what C is to D 是什么句型? “A is to B what C is to D”句型,what起什么成分作用?这是从句吗? A is to b what c is to d A is to B as/what C is to D 关于A is to B what C is to D 的句式 A is to B what C is to D 这种英语句式可否用否定形式 what A is to B is what C is to D 关于A is to B what C is to D 的句式中WHAT 可以用AS代替吗? 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?