精选优质文档-倾情为你奉上主语从句讲解主语从句主语从句定义:在句子中担当主语的是一个从句,这个从句就叫做主语从句。主语从句是在复合句中充任主语的从句,通常放在主句谓语动词之前或由形式主语it代替,而本身放在句子末尾。1.引导主语从句的关联词有三类:(1)从属连词that,whetherThat they were true sisters was clear from the facial resemblance between them.Whether hell come here isnt clear.(2)连接代词who, whom, whose, what, which, whoever, whatever, whichever,What she did is not yet known.How this happened is not clear to anyone.Whoever comes is welcome.(3)连接副词where,when, how, why2.主语从句是在复合句中充任主语的从句,其功同名