In phrases like "one of the [plural noun] who/that," the verb is usually plural because it refers to the group. Example: He is one of the men who do the work.
When a gerund (-ing word) is used as a subject, it takes a singular verb. Example: Running is great exercise.
Phrases like together with, as well as, along with, and including do not change the number of the subject. Ignore them when choosing your verb. Example: The mayor , along with his aides, is arriving now. 20 rules of concord and examples pdf download
Singular subjects take singular verbs; plural subjects take plural verbs. Example: The cat sleeps on the sofa. (Singular) Example: The cats sleep on the sofa. (Plural) Handling Conjunctions
When subjects are joined by or or nor , the verb must agree with the part of the subject closest to it. Example: Neither the manager nor the employees are happy. Example: Neither the employees nor the manager is happy. Tricky Pronouns In phrases like "one of the [plural noun]
The subject is never found inside a prepositional phrase starting with "of."
If two nouns joined by "and" represent a single idea or a single person, use a singular verb. Example: Bread and butter is my favorite breakfast. Example: Running is great exercise
Mastery Guide: 20 Rules of Subject-Verb Concord (With PDF Examples)