精选优质文档-倾情为你奉上名词性从句名词性从句包括主语从句、表语从句、宾语从句、同位语从句。其关联词有连接词that,if,whether;疑问代词who,what,which和疑问副词when,where,how,why等。1. 主语从句主语从句在句中做主语。它可以放在主句谓语动词之前,但多数情况由it作形式主语,而把 主语从句放在主句之后。例如:Who did that is known to all.It is interesting that you should like him.2. 表语从句 表语从句在句中作表语,位于主句中的系动词之后。如: The question is who can complete the difficult task.表语从句不能用if引导,但可用as if引导。例如: He looked as if he was going to cry3. 同位语从句同位语从句跟在名词后面,进一步说明该名词的具体内容。引导同位语从句的名词主要有 fact,news,pr