It's nothing to be suprised about中 to做什么成分,去掉不行吗?

It's nothing to be suprised about中 to做什么成分,去掉不行吗?
It's nothing to be suprised about中 to做什么成分,去掉不行吗?

It's nothing to be suprised about中 to做什么成分,去掉不行吗?
It's nothing to be suprised about该句中的 it 是形式主语,to be suprised about..才是真正的主语,这是不定式做主语的例子,不能省略.
可以转变为：To be surprised about...is nothing.