neither either both 有什么区别

neither 两者都不
eg: Neither of them is smart.
Neither of my friends has come yet.

either 二者其一
eg: Either of the plans is equally dangerous.
Have you seen either of your parents today?

both 两者都
eg: Both of the films were very good.
Both of them are smart.

neither...nor... 既不是...也不是...
eg: I saw neither Mr nor Mrs Smith at church.

either...or... 不是...就是...
eg: He must be either mad or drunk.

neither两者都不，常用短语：neither...nor
either 两者选一，常用短语：either ...or
both 两者都， 常用短语：both...and

either...or...neither...nor连接两个主语时,其谓语动词应与最近的一个主语在人称和数上保持一致,这就是我们通常说的"就近原则".
both...and表示两者都……
例：Both you and I are good students.
你和我都是好学生.
注意：动词谓语用复数
either...or表示两者中有一个,要么…要么
例：Either you or I am good students.
要么你是好学生,要么我是好学生.
注意：动词谓语就近原则.
neither...nor表示两者都不
例：neither you nor I am good students.
你和我都不是好学生.
注意：动词谓语就近原则.