名词性从句1 名词性从句 主语从句宾语从句表语从句同位语从句主语从句在句中做-宾语从句在句中做-表语从句在句中做-同位语从句在句中-主语宾语表语同位语1.That he will come is certain.2.I know that he will come.3.The truth is that I have been there.4.The fact that she was late surprised us.主语从句宾语从句表语从句同位语从句21.为什么叫名词性从句？2._整个从句相当于一个名词比较:The man looked around.That the boy failed again in the exam disappointed his mother.同样作主语，从句可以表示较复杂的含义,一般是个动作或性质I know him.I know that he is writing his composition in his room2.为什么要有名词性从句？那人看了看四周.(名词作主语)那孩子考试又不及格令他母亲很失望.(从句作主语)我知道他在房间里写作文.
