专题九 名词性从句常考点
在复合句中起名词作用的从句叫作名词性从句。它包括主语从句、宾语从句、同位语从句和表语从句。名词性从句是英语中的一个重要语法项目，在历年的高考中几乎都涉及到。引导名词性从句的连接词可分为三类：连接词that，whether，if(不充当从句的任何成分)；连接代词what，whatever，who，whoever，whom，whose，which；连接副词when，where，how，why。
It is...和There is...
It is...句型中it为形式主语，真正的主语为动名词、不定式或从句，而There is意为“有……”，有时be也可以用exist，remain等替代。
用it，there填空：
①________ is a pity that he was absent.
②________ is a fact that he has lied to you.
③________ is no wonder that he is so excited.
④________ is no need to worry about it.
⑤________ is no sense/point (in) arguing with him.
⑥________ is no doubt that he has gone.
【答案】①It ②It ③It ④There ⑤There ⑥There
