what a to b is what c to d

问题描述:

what a to b is what c to d
还有一个as 引导的句子 和上面的类似
好像是 a is to b as c is to d 这个句子对嘛?不对的话予以解释及正确答案啊

应该是a is to be what c is to d
这是一个固定用语,在英语里是一个表修辞类比的句式
意思是:A之于B正如C之于D
例:Air is to human what water is to fish.