there is no doubt that.和 it is no doubt that...的区别
为什么有的句子要用there is no doubt that.而有的句子又要用it is no doubt that...当然他们都是“毫无疑问”的意思,可用法上有什么区别呢?
这是一道改错题：there is no doubt that he passsd the exam.答案是将there改为it,为什么呢。