it's hard to believe that someone could have actually conjured them up.这个句子中是不定式做真正主语还是that从句做真正主语.如果不定式作主语的话那还原后就是 To believe that that someone could have actually conjured them up is hard.那么that从句做什么?如果that从句是宾语的话那他是谁的宾语?是believe的吗?可是to believe 已经是主语了 没有谓语怎么可能做to believe 的宾语呢?

it's hard to believe that someone could have actually conjured them up.
这个句子中是不定式做真正主语还是that从句做真正主语.如果不定式作主语的话那还原后就是 To believe that that someone could have actually conjured them up is hard.那么that从句做什么?如果that从句是宾语的话那他是谁的宾语?是believe的吗?可是to believe 已经是主语了 没有谓语怎么可能做to believe 的宾语呢?