Question

There is no denying the fact that as one grows older one`s m

Answer 1

句子的主干：There is no denying the fact.

主语：no denying the fact(中心词是denying,这是一个动名词,后面带了宾语the fact.)

系动词：is

表语：there

There is no denying the fact 有一个不可否认的事实

that as one grows older one`s memory declines是the fact的同位语从句,它们指同一件事.

后面的同位语从句又含有一个主句和一个时间状语从句：

one`s memory declines是主句（主语one`s memory 谓语declines）,

as one grows older 是时间状语从句,连词as表示“随着”.

句意：有一个不可否认的事实：随着年龄的增长,人的记忆力也会下降.