It is a pity that?(原句是:What a pity it is that you didn"t arrive by day )

问题描述:

It is a pity that?(原句是:What a pity it is that you didn"t arrive by day )
It is a pity that?(原句是:What a pity it is that you didn"t arrive by day 中的that you didn"t arrive by day 是that 引导的主语从句吗?

it是形式主语,that从句是真正的主语那that引导的是主语从句吗??是的,为了防止句子头重脚轻,通常把形式主语it放在句首位置,真正主语搁置于句末