and反義詞，與both

反義詞是neither nor，意思是既不也不，例如：

1、Their house is neither big nor small.他們的房子不大也不小。

2、What might have happened is neither here nor there.曾經發生過什麼事已經都不重要了。

3、I neither knew nor cared what had happened to him.我既不知道也不關心他出了什麼事。