一、either/either…or
1.either“两者当中任何一个”，后有of时接名词的复数形式，无of时接单数名词，动词用单数形式。
You may wear either of the hats.
Either pencil is ok for this.
2.either…or…“不是……就是……,或者……或者…….”动词与临近的主语保持一致。即 “就近原则”。
Either you or he has to go = Either he or you have to go.
Neither you nor I am right .= Neither I nor you are right.
二、就近原则与就远原则
就近原则
也称“邻近原则”“就近一致原则”(Proximity），即：谓语与靠近的名词、代词（有时不一定是主语）在“人称、数”上一致。
关联词语：
1、there be...
2、neither …nor 既不...也不...
3、either …or 不是…就是…，…或…，要么…要么…
4、whether…or 是...还是，不管...还是
5、not only…but also 不仅 … 而且 ...
6、not…but
就远原则
就是谓语动词的变化，即：谓语动词与前面主语一致。
关联词语：
as well as
（together/along）with
rather than
except
besides
but
including
in addition to
apart from
