all 後面只能跟that,这是搭配的问题,没有all which的用法.all that=what.句子可以写成 my mother is interested in what I have told her也是可以的.这里的what在主句中做的的宾语,在从句裏呢也是做双宾语（her是一个,what是另外一个）的另外一个宾语.all和what都可以做宾语,所以有all就不用what啦.Satisfied?