低级别鳞状病变严重吗:看这句话为什么用that 不用what?

来源：百度文库 编辑：查人人中国名人网 时间：2024/05/12 09:37:12
Mary told me that she had a bad cold last week

这里的that起引导的宾语从句的作用,无实义.而what是有意义的,译作"什么",在句中意思是不通的.

看这句话为什么用that 不用what? I have a dream that one day we could meet这句话中，关系代词为什么用that而不用which 这个为什么不用where而用that? Energy is what make things work.这句中的what为什么不能用that代替? What did happen?这句话对吗?为什么?请祥解 What's that? that what when which!????? that和what what is that? 这句话里that引导什么从句