either of 后跟单数还是重数

　　例句：

　　You may take either of the two.

　　你可以从两个中间挑任何一个。

　　The news did not shock either of them.

　　这消息没有使他们任何一个人震撼。

　　Letting this out wouldn't do either of us any good.

　　要是嚷嚷出去，对咱俩都没好处。