Question

可以帮忙分析下句子结构成分吗？

The two approaches are so fundamentally different that it is surprising that they have both been successfully

Answer 1

The two approaches are so fundamentally different that 【it （形式主语）is surprising that {they have both been successfully}（真正的主语）】【结果状语从句】

主干部分：The two approaches are different 

从句套从句

翻译：

这两种方法有着本质上的不同，令人惊讶的是它们都成功了

Answer 2

这句话采用“so……that……”句式。
主句是主系表结构：
主语：The two approaches
系动词：are
表语：fundamentally different
从句采用it作形式主语，真正的主语是后面的that从句。

Answer 3

The two approaches are so fundamentally different主句
that it is surprising that they have both been successfully结果状语从句
（The two approaches主语）（ are so fundamentally different系表结构）
that（ it形式主语）（ is surprising系表结构） （that they have both been successfully主语）

Answer 4

这2种方式从根本上不同，但令人惊讶的是它们都获得了成功。