It's not who you are underneath...but what you do that defines you 这里面的that能去掉吗?

It's not who you are underneath...but what you do that defines you 这里面的that能去掉吗?
It's not who you are underneath...but what you do that defines you 这里面的that能去掉吗?

It's not who you are underneath...but what you do that defines you 这里面的that能去掉吗?
这个复合句中,it is是形式主语,两个what后面那串并列做表语,that引导的主语从句才是句子真正主语.所以that不可省略