1、Suddenly I have got the idea, to visit the art museum in the weekend.
2、Our task, to be that work in one day, could be accomplished.
以上句中不定式均是作同位语成分。在句1中to visit的逻辑主语究竟是句子主语I，还是可以理解为泛指呢（由于不定式同位语idea是个一般抽象概念）？。句2中to be的逻辑主语看上去就是同位语our task(句子主语)，这一点（同位语间又是主谓关系）该如何理解呢？
