2. It is + 名词词组(no wonder, a good thing, a pity, no surprise, ect.) + that 从句
It’s a pity that we can’t go.
that 是否可以省略?
That we can’t go is a pity.
( )
that 在句首时绝对不能省. 口语中that引导真正的主语时,that可省.