“In spite of all that has been said,……”

题目

“In spite of all that has been said,……”
为什么说关系代词that在从句中做主语而不能省略,为什么不能是"In spite of all has been said"?
还有哦,一般什么情况下可省略that,什么情况下不能?

答案

充当主语的代词都是不能省的.只有that充当宾语时才能省略.如：He is the one (that) I love.这个一般就是省略的.