In either/or and neither/nor sentence structures, the verb should match what?

In either/or and neither/nor sentence structures, the verb indeed matches whichever subject appears last. This is an important rule in English grammar that helps maintain subject-verb agreement in complex sentences involving compound subjects.

For example, in the phrase "Neither the manager nor the employees were available," the plural subject "employees" is the last subject mentioned, so the verb "were" agrees with it. On the other hand, if the structure were "Either the employees or the manager is available," the last subject mentioned is "manager," which is singular, prompting the use of the singular verb "is."

This pattern demonstrates how the placement of subjects in these constructions dictates the form of the verb used, ensuring clarity and grammatical correctness in the sentence.