翻译并分析句子结构,不分析不采纳:it is different to know what the future hol

it is different to know what the future holds
也许句子应该是：
It is difficult to know what the future holds.
想知道未来动向是困难的.
it是用来引导to know what the future holds的,原句相当于：
To know what the future holds is difficult.
整个动词不定式短语To know what the future holds（想知道未来动向）在句子中 作主语,is是系动词,difficult是表语.
different 是“不同”的意思,而difficult是“困难”的意思,看来这里用difficult较合理.

it是形式主语，真正的主语是to后的内容，is是系动词，different是表语，what the future holds是know的宾语从句

你的是错句。应该是
it is difficult to know what the future holds.

it(形式主语) is （系动词）difficult （表语）to know what the future holds（真正主语）.