I have bought two ball pens, neither of which writes well. 为什么这个标红色的地方不能用 neither of them 或者 none of them, 好困惑,多谢解答!
neither of which writes well是一个非限制性定语从句。如果用 neither of them,应该是: I have bought two ball pens, and neither of them writes well. 在谈到三个或多于三个的人或事物时,才能用none 或 none of。