Referring a choice between two possibilities.
Used in negative sentences instead of “too” or “also”.
I haven’t either.
Used in a negative sense with two nouns.
Used in a negative sense.
If both elements are singular, the verb is singular too.
Neither my mother nor my father needs to attend the meeting.
If one of the elements is plural, the verb is plural too.
Neither John nor his friends are going to make dinner.