the scientist needs to find some grounds on which to base his argument on 可以放后面吗
问题描述：
the scientist needs to find some grounds on which to base his argument on 可以放后面吗
答
可以 一样应该不可以，因为同时有两个答案。只是一时无法解释为什么可能是定语从句里面的介宾结构吧。。。忘了