强调句的疑问形式

问题描述:

强调句的疑问形式
It was Lily who/that I dreamed of yesterday.(变成一般疑问句)
Was it Lily that you dreamed of yesterday?
that 可以换成who 或者whom 确定再答

that 可以换成who,不过强调的要是人,至于whom就不得行老