oth,neither and either都涉及两个人或事物的关系,both意为“两者都”,neither意为“两者中任何一个也不”,either表示“两者中的任何一个”,我们在使用时应特别注意以下几点.
作代词时,both指两人或两种事物,后面谓语动词用复数.neither,either通常被看作单数,其后谓语动词用单数.
Both of us are students.
Neither is mine.
Either of the magazine is interesting.
作形容词时,both修饰名词一的复数形式,neither和either修饰名词的单数形式.
Both pens are blue.
Neither answer is right.
These are trees on either side/both sides/each side of the river.
注意
both与not连用表示部分否定,意为“并非都.”.而表示“两者都不”要用neither.另外,either和not连用也表示“两者都不”.
Both of us are not musicians.
Neither of us is a musician.