英语问题!A is to b what c is to d

这个句式中都是用what的吗？有没有一种情况是ABCD是数字，表示比例上的关系的时候用as的？
12 is to 4 as 18 is to 6?

不可以
这是外国人的习惯用法，虽然汉语上用as 感觉意思和原来一样，但是是不可以的

below it's my answer :

1,love is to me what  water is to  fish .

2,mother  is to baby  what   sunshine  is to flower .

3,water is to fish what air is to man.

4,care is to human what  food is to bird.

5, happy is to me what  moon is to skey   .

6,family is to man  what  heart is to body .

12 is to 4 What 18 is to 6? 12/4=18/6 固定句型