It was through Jack __that___ Mary got to know Bob .你真的认为它是主语从句吗?
问题描述：
It was through Jack __that___ Mary got to know Bob .你真的认为它是主语从句吗?
答
是强调句,将it was 和that去掉后,Mary got to know Bob through Jack能讲的通,此强调句强调through Jack.