Question

what a to b is what c to 是这个句型么

Answer 1

1、what
A
to
B
is
what
C
to，是what引导的比较状语从句。
如：what
you
to
me
is
what
water
to
fish.
我离不开你
就像鱼离不开水。
2、也可以这样表达：A
is
to
B
what
/as
C
is
to
D，表示A与B的关系和C与D的关系具有可比性。但是，如果A、B、C、D为数字时，则用as取代what，表示比例上的相等。
eg：Twelve
is
to
three
as
four
is
to
one.
18之于3等同于6之1。
Intellect
is
to
the
mind
what
sight
is
to
the
body.
智力之于大脑，犹如视力之于躯体。

Answer 2

what引导比较状语从句
a
is
to
b,what
c
is
to
d或者
what
a
is
to
b,so
is
c
to
d
as
a
is
to
b,that
c
is
to
d
翻译成，a和b的关系正如c和d的关系一样

不能换成as，这是一个固定用语，在英语里是一个表修辞的句式（类比）
汉语意思是：a之于b正如c之于d
例：air
is
to
human
what
water
is
to
fish.
空气之于人类犹如水之于鱼．
有些托福的语法书上讲有的，或你也可参考《修辞学》黄任著（上海外语教育出版社）