定语从句中的主格助词常常可以用领格助词代替。比如,下列两个定语从句都是对的。△雨降(日)/下雨(天)△月出(顷)/月亮出来(时)问题是,是不是任何定语从句中的主格助词都可以用领格助词来代替?如果不是,那么,什么样的定语从句中可以代替,什么样的不能代替?还有,能用代替的是否只有主格助词?最后,可以代替时,用和用的定语从 Often attributive clause in the main auxiliary word can be used to replace the leading particle. For example, the following two attributive clauses are correct. △ Rainfall (days) / rain (days) △ Moonrise (a) / moon out (hours) The question is, is not any attributive clause in the main qualifier can be used to replace the leading qualifier? If not, then, What kind of attributive clause can be replaced, what kind of can not be replaced? Also, can use instead of only the main qualifier? Finally, you can replace, with and attributive from