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neither of

Neither / neither of means not the one nor the other of two people or things.

When 'neither' is used as an adjective or pronoun it takes a singular verb.

For example:-

Neither teacher is present.
Neither was present.

When we use 'neither of' there is a bit of controversy. In speech and less formal writing a plural verb is often used,

For example:-

Neither of the teachers were in the classroom.

However, purists will insist on using singular verbs.

For example:-

Neither of the teachers was in the classroom.

See also neither nor vs either or

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