16.关系代词作主语时的主谓一致

关系代词which，who，that在定语从句中作主语时，其谓语动词的数应与其前的先行词的数保持一致。

I，who am the judge，has the right to decide．

我是法官，所以有权决定。

Those who want to go should sign your names here．

那些想去的人请在这儿签上你们的名字。

The tomato is one of nearly 4，500 different plants that are genetically modified．(人教大纲版高一下第46页)

西红柿是近4 500种转基因植物中的一种。

提示：

当one之前有the(only)等修饰时，定语从句的谓语动词用单数。

He is the only one of those boys who is willing to accept the offer．

他是那些男生中唯一愿意接受这个提议的一个。

He is the(only)one of the children who often speaks ill of others behind their backs．

他是这些孩子中唯一经常在背后讲别人坏话的人。