分析一下这句英语的成分

题目

分析一下这句英语的成分
Considering how recent these developments are,it is even more remarkable that as long age as the 1960s,an Englishman,Leon Bagrit,was able to predict some of the uses of computers which we know today
Considering引导的是不是伴随状语?
it is even more remarkable that as long age as the 1960s 这个分句各个部分所做的语法成分,一定要仔细!as long age as the 1960s 做状语为什么要用that引到?去掉that可不可以?
提出的问题一定要全部回答啊!

答案

it is+形容词+that引导主语从句,在这里it是形式主语,that后跟的是真正的主语,为了使你更好的理解,将句子还原一下——as long age as the 1960s,an Englishman,Leon Bagrit,was able to predict some of the uses of ...