Agreement After 'Either... Or' and 'Neither... Nor

Agreement After “Either… Or” and “Neither… Nor”

When “either… or” or “neither… nor” are used to join two nouns, the verb typically agrees with the second noun in the pair.

Either a tablet or a laptop is needed for the course.
(Here, the verb agrees with the second, singular noun: "laptop.")

Neither the teacher nor the children were happy.
(Here, the verb agrees with the second, plural noun: "children.")

If the second noun is singular and the first is plural, either a singular or a plural verb can be used.

Neither the classrooms nor the office have/has internet access.
(In this case, the verb can be either singular or plural.)