1、either指两者中的任何一个，neither指两者都不。作代词时，either, neither一般接单数动词。作限定词时，一般加单数名词。
2、either...or表示两个或多个选择中的一项。neither...nor表示“既不，也不”。either...or, neither...nor连接的两个名词或代词作主语时，谓语动词与最靠近它的主语一致。
3、 either表示也不，用于否定句。(too表示“也”，用于肯定句。)
4、neither可以引导倒装句，表示和前面的情况一致，而且前面为否定句。
拓展资料
either
1、他们要么以个人名义要么通过他们的公司捐钱给了保守党。
2、There had been no indication of either breathlessness or any loss of mental faculties right until his death.
他去世前并未出现呼吸困难或意识不清的迹象。
3、There were glasses of champagne and cigars, but not many of either were consumed
这里有香槟和雪茄，但两样东西都没怎么动。
4、She warned me that I'd never marry or have children. —'I don't want either. '
她告诫我千万不要结婚，也别要孩子。——“这两样我都不想要。”
5、He did not even say anything to her, and she did not speak to him either
他甚至一句话也没跟她说，她也没跟他说话。
neither
1、Professor Hisamatsu spoke neither English nor German
久松教授既不会讲英语，也不会讲德语。
2、At first, neither man could speak.
起初，两个人都不会说。
3、I never learned to swim and neither did they
我从没学过游泳，他们也没有。
4、I can't ever recall Dad hugging me. Neither did I sit on his knee.
我不记得爸爸曾经抱过我，我也没在他膝盖上坐过。
5、'I'd never heard of her before I came here.' — 'That is neither here nor there.'
“来之前我从未听说过她。”——“那没什么。”
