http://zhidao.baidu.com/question/464803273.html
无论是限制性定语从句还是非限制定语从句都不一定紧跟被修饰词。
The boy will go to the nursery(幼儿园) nearby that was bulit last year.
（限制性定语从句）先行词是the nursery，而不是nearby。
He doesn't like the book on the desk, the cover of which is green.
（非限制性定语从句）先行词是book,而不是the desk.
