it is hard for me to find him .句子结构 hard for 是什么?

It is hard for me to find him .
it 是形式主语,指代真实主语to find him .is是系动词,hard做表语.
for me 是补充.表明“对我来说”
其实 it's+ 形容词+for+somebody + to do sth.“对于某人来说做某事是.的”for me 做什么呢？for me 是补充作用，表明“对我来说”不是做宾补吗？这句没宾语耶