This document discusses subject-verb agreement rules in English. It provides examples of when a singular or plural subject takes a singular or plural verb depending on whether the subjects are joined by "and", "or", "either...or", "neither...nor" and other conjunctions. It also discusses how the verb agrees with the subject in sentences beginning with expressions like "one of", "each of", "either of" as well as sentences beginning with "there". Finally, it notes exceptions to subject-verb agreement rules for certain collective nouns, nouns with plural endings but singular meaning, and nouns ending in "-ics".