1、either用于否定句，放在句末，之前加逗号。2、too语气较轻，多用于口语，在肯定句中使用，通常位于句末。3、either表示二者之一。too表示“太”，有超出极限无法忍受之意。
either造句
Eitheryou or I am going there tomorrow。
Eitheryou or she is good at drawing。
When the girl is happy， sheeithersings or dances。
Doeitheryou or he have lunch at school?
I want to visiteitherParis or London。
too造句
1、It's neithertoosleepy nortoointimidating.
2、You sit downtoo.
3、Germany (toosmelly).
4、He istoodogmatic!
5、You deserve onetoo.