谁能讲讲名词性从句啊?答:There is no doubt but (that) we will succeed in designing the project.毫无疑问,我们能把这项工程设计出来。 C.同位语从句的先行词 同位语从句的先行词通常是抽象名词,常见的有:idea, situation thought, fact, evidence, belief, doubt, fear, hope, question, theory, news, order, ability等等。例如: ...