both neither either all none的用法 both指两者“都”,表示肯定,后接复数名词,作主语时谓语动词用复数。反义词是neither 。例句:Both of the sisters are students.构成搭配both.and.表示两者兼有。例句:Both Lucy and Lily are students .either指两者中的“任何一个”,作主语时谓语动词用单数。例句:Either of the students is clever. Either of them likes football.构成搭配eitheror 表两者中任意一者。意为或者或者;不是就是。表示两者之一。当连接两个主语时,谓语遵循就近原则。例:Either you or he is student. Either you or I am student. neither指两者“都不”,表示否定,作主语时谓语用单数。 例句: