Subject-Verb Agreement: Rules, Examples & Common Pitfalls

Published: May 17, 2026 · 9 min read

Subject-verb agreement is one of the most fundamental rules in English grammar: a singular subject takes a singular verb, and a plural subject takes a plural verb. While the basic rule sounds simple, real-world sentences create tricky situations that trip up even experienced writers.

The Basic Rule

The verb must match the subject in number. The most common place to apply this is in the present tense, where verbs add an -s for third-person singular.

• The dog barks at the mailman. (singular subject → singular verb)
• The dogs bark at the mailman. (plural subject → plural verb)
• She writes every day. (singular)
• They write every day. (plural)

This rule applies to the verb "to be" as well, though it changes more dramatically: am, is, are, was, were.

Tricky Case 1: Prepositional Phrases Between Subject and Verb

When a prepositional phrase appears between the subject and verb, the verb must still agree with the true subject — not the noun in the prepositional phrase.

• Wrong: A box of chocolates are on the table.
• Right: A box of chocolates is on the table. (box, not chocolates)
• Wrong: The group of students are meeting today.
• Right: The group of students is meeting today. (group, not students)

Mentally cross out the prepositional phrase (of chocolates, of students). The remaining subject will tell you which verb to use.

Common prepositional phrases to watch for: of, in, on, with, for, from, including, accompanied by, together with, as well as.

Tricky Case 2: Compound Subjects with "And"

A compound subject joined by "and" is generally plural and takes a plural verb.

• Tom and Jerry are coming to dinner.
• My laptop and phone were stolen.

Exception: When the compound subject refers to a single unit or person, use a singular verb.

• Peanut butter and jelly is my favorite sandwich. (one sandwich)
• The CEO and founder is speaking tonight. (one person with two titles)
• Bread and butter is served with every meal. (treated as a single dish)

Tricky Case 3: Compound Subjects with "Or" / "Nor"

With "or" or "nor," the verb agrees with the subject closest to the verb.

• Neither the manager nor the employees are satisfied. (employees — plural — is closest)
• Neither the employees nor the manager is satisfied. (manager — singular — is closest)
• Either Sarah or the twins have the keys. (twins — plural — is closest)
• Either the twins or Sarah has the keys. (Sarah — singular — is closest)

For the most natural sound, place the plural subject closest to the verb — this lets you use a plural verb, which tends to sound less awkward.

Tricky Case 4: Indefinite Pronouns

Many indefinite pronouns are singular and take singular verbs — even when they feel like they refer to multiple things.

Always singular: each, every, everyone, everybody, anyone, anybody, someone, somebody, no one, nobody, either, neither, one.

• Everybody is here. (not "are")
• Each of the students has a laptop. (not "have")
• Neither is correct. (not "are")
• Someone has left their bag. (someone is singular; "their" is increasingly accepted as a singular they)

Always plural: both, few, many, several.

• Both are available.
• Few have completed the assignment.

Depends on context: all, some, most, none, half, any.

• All is lost. (all = everything, uncountable)
• All are invited. (all = people, countable)
• None is / are perfect. (both are acceptable in modern English)

Tricky Case 5: Collective Nouns

Collective nouns (team, committee, family, audience, staff, government, group) can be singular or plural depending on meaning.

• The team is meeting at 3 PM. (team as a single unit)
• The team are divided on the issue. (team as individual members)

American English vs British English: American English generally treats collective nouns as singular. British English more readily uses plural verbs with collective nouns. Neither is wrong — consistency within a document matters more.

Tricky Case 6: Inverted Sentences (Subject After Verb)

When the subject follows the verb (common in questions and "there is/are" constructions), you must still match the subject.

• Wrong: There is three reasons for this. (looks at "there" — not the subject)
• Right: There are three reasons for this. (subject = reasons — plural)
• Right: There is a good reason for this. (subject = reason — singular)
• Under the bridge live several families. (subject = families — plural)
• Here comes the bride. (subject = bride — singular)

In questions, locate the subject after the verb:

• Where are the documents I asked for? (subject = documents)
• Where is the file I sent yesterday? (subject = file)

Tricky Case 7: Words That Look Plural but Are Singular

Some words end in -s but take singular verbs, and some never change form.

• Singular: news, mathematics, economics, physics, politics, gymnastics, measles.
• "The news is good." (not "are")
• "Politics is a complicated field." (can also be plural when referring to multiple political beliefs)

Conversely, some words are plural-only:

• Always plural: trousers, glasses, scissors, belongings, outskirts, premises.
• "These scissors are sharp." (not "is")

Tricky Case 8: Titles, Amounts, and Measurements

Titles of works (books, movies, songs), amounts of money, periods of time, and measurements are treated as singular when they refer to a single entity.

• "The Chronicles of Narnia" is a classic series. (one book series, despite the plural title)
• Five hundred dollars is too much for that ticket. (one amount of money)
• Ten years is a long time to wait. (one period of time)
• Two miles is not far to walk. (one distance)

Quick Subject-Verb Agreement Checklist

1. Identify the true subject — ignore prepositional phrases and other modifiers between subject and verb.
2. Check whether the subject is singular or plural.
3. For "or/nor" subjects, look at the noun closest to the verb.
4. For indefinite pronouns, memorize which are always singular and which vary by context.
5. For collective nouns, decide whether you mean the group as a unit or as individuals, and stay consistent.
6. In inverted sentences, find the subject after the verb before choosing your verb form.

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