2. that引导名词性从句不充当任何句子成分，只起连接作用，无任何意义。引导主语从句时，常用it作形式主语，谓语动词用单数，引导宾语从句时，常被省略。 e.g. That she will refuse the offer seems unlikely. I have found (that) all the tickets have been sold out. It is a pity that you missed such a fine talk.