It is a pity that he could not come .这句话是主语从句吗?请分析一下句子成分,It is un_英语解答

It is a pity that he could not come .这句话是主语从句吗?请分析一下句子成分,
It is unusual for him to be late .这里的it是形式主语，to be late是真正的主语，麻烦分析一下句子成分，

人气：302 ℃　时间：2020-03-28 09:45:55

解答

He could not come 这件事情是一个遗憾.
It 是形式主语,真正的主语是that 引导的从句.
这句话就等于：That he could not come is a pity.
It is + 形容词（for sb.) to do sth.to do sth 是真正的主语,it 只是形式主语.
你说得很对!很棒!
祝学习愉快!