两个句子:“I want to know what is love?”

问题描述:

两个句子:“I want to know what is love?”
“I want to know what love is?”哪个是正确的?原因是什么.

I want to know (that省略了) what is love.
I want to konw what love is.
that可有可无,所以是同义的另一表述