Mastering Subject-Verb Agreement for Error-Free Writing

Subject-verb agreement is one of the most basic rules in English, yet it trips up writers at every level. A subject and its verb must match in number: a singular subject takes a singular verb, and a plural subject takes a plural verb. It sounds simple, but problems creep in the moment a sentence gets longer or the subject becomes less obvious. Getting this right matters most when the writing represents you professionally, such as in a resume, a cover letter, an email to a recruiter, or an academic assignment. This guide breaks down the core rule, the mistakes that catch people off guard, and the special cases worth memorising.

Why subject-verb agreement matters 🔗

At its core, subject-verb agreement is the rule that the verb in a sentence must match the subject in number and person. In the present tense, a third-person singular subject (he, she, it, or a single noun) usually takes a verb ending in -s, while a plural subject takes the base form.

Consider these two sentences:

The boy runs fast. (singular subject + singular verb)
The boys run fast. (plural subject + plural verb)

When agreement breaks down, readers notice immediately. A line like “The candidates was shortlisted” sounds wrong to anyone fluent in English, and on a resume or in an interview email, that single error signals carelessness. Clear agreement keeps your writing readable and your meaning precise. Subjects and verbs must agree in both number and person, and this is especially relevant in the present simple tense and with the verb “to be,” which shifts between am, is, are and was, were.

Common mistakes and how to avoid them 🔗

Most agreement errors are not caused by confusion over the basic rule. They happen when something obscures the real subject. Here are the situations that cause the most trouble.

Words coming between the subject and verb 🔗

The biggest source of error is a phrase that sits between the subject and the verb. The verb must agree with the actual subject, not with a noun in an intervening phrase. Make the verb agree with its subject, not with a word that comes between them, whether that word sits inside a prepositional phrase or an adjective clause.

Incorrect: A box of markers are on the table.
Correct: A box of markers is on the table.

Here the subject is “box,” not “markers.” The phrase “of markers” simply describes the box. The word of is responsible for a large share of agreement mistakes, so whenever you see it, look past it to find the true subject.

The same logic applies to connecting phrases like as well as, along with, and in addition to. These do not behave like “and.” They do not make the subject plural. So “The governor, as well as his press secretary, was applauded” takes a singular verb because the real subject is just “the governor.”

Compound subjects joined by “and” 🔗

When two subjects are joined by and, they usually form a plural subject and take a plural verb.

Matt and Lisa write in the morning.

There is one exception worth noting. When the two nouns describe a single combined thing, the subject is treated as singular. For example, “Peanut butter and jelly is my favourite sandwich” uses a singular verb because the two items together name one dish.

Compound subjects joined by “or” or “nor” 🔗

This is where many writers slip. When subjects are joined by or, nor, either/or, or neither/nor, the verb agrees with the subject closest to it. For a compound subject with “or” or “nor,” the verb agrees with the noun nearest the verb.

Either Jeff or his sisters know the answer. (nearest subject “sisters” is plural)
Either his sisters or Jeff knows the answer. (nearest subject “Jeff” is singular)

This explains why “Neither the lab assistant nor the students were able to download the information” takes a plural verb, while reversing the order to “Neither the students nor the lab assistant was able” makes it singular.

Indefinite pronouns 🔗

Indefinite pronouns refer to unspecified people or things, and they are a classic trap. Words such as everyone, everybody, anyone, anybody, someone, somebody, no one, nobody, each, and either are grammatically singular and take a singular verb, even though some of them feel plural in meaning.

Everyone is happy. (not “Everyone are happy”)
Each of the students has a roll number.

The word “everyone” suggests a crowd, but it refers to the group as a single unit, so it stays singular. The same applies to “each,” which points to every individual member of a group and is therefore treated as singular, no matter how many people the group contains.

Rules for special cases 🔗

Beyond the everyday slips, English has a set of special cases where the logic is not obvious. These appear often in competitive exams and formal writing, so they are worth learning properly.

Collective nouns 🔗

Collective nouns name a group as a single unit: team, family, committee, jury, audience, staff, class, government, and police. The general rule is that when the group acts as one body, the verb is singular. Because collective nouns are counted as one unit, they usually require a singular verb.

The committee meets every Friday.
Our class has forty students.

There is a subtlety. When the focus shifts to the individual members acting separately, the verb can become plural. “The team is heading for practice” treats the team as a unit, while “The team are eating with their families” highlights the members individually.

One regional note matters here. In British English, collective nouns can take either a singular or plural verb depending on whether the emphasis is on the body as a whole or on its individual members, so “the committee were unable to agree” is acceptable. American English leans towards keeping these singular. Since Indian English largely follows British conventions, you will see both forms in practice, but for exams and formal documents, staying consistent within a sentence is the safest approach. If “the council needs to review the report,” keep it as “before it could vote,” not “before they could vote.”

Measurements of time, money, and distance 🔗

When a subject expresses a single quantity of time, money, or distance, it takes a singular verb even though the number looks plural. Use a singular verb for quantities thought of as a single amount, because the figure represents one total, not separate items.

Twenty-six kilometres is the distance of a marathon.
Ten minutes is enough time to finish.
Five hundred rupees is too much for that book.

The logic is that “ten minutes” is one block of time, not ten individual things. The same applies to “five hundred rupees,” which names a single sum.

Singular-looking plurals 🔗

Some words end in -s and look plural but are actually singular and take a singular verb. These include subject names and conditions such as mathematics, physics, economics, statistics, politics, news, and measles.

Mathematics is my favourite subject.
The news was shocking.

Occasionally a few of these words carry a plural meaning in a different context, as “office politics often sway decisions” shows, but in their core sense as fields of study, they remain singular.

Quantifiers like “all,” “some,” and “none” 🔗

Words such as all, any, some, most, and none are flexible. Their number depends on the noun they refer to. If that noun is uncountable or singular, the verb is singular; if it is plural, the verb is plural. A few quantifiers may be singular or plural depending on the noun or pronoun they refer to.

Some of the luggage is lost. (luggage is uncountable)
Some of the rocks are slippery. (rocks is plural)

The “number of” versus “the number of” trap 🔗

This pair is a favourite in grammar tests. “The number of teenagers reading books is declining” is singular, while “A number of college graduates are applying for jobs” is plural. “The number” refers to a single figure, so it takes a singular verb. “A number of” means “several,” so it takes a plural verb.

Examples and practice exercises 🔗

Reading the rules is one thing; applying them is another. Work through these sentences and decide on the correct verb before checking the answer. They cover the cases discussed above.

1. Each of the candidates (has / have) submitted the form.
Answer: has. “Each” is always singular.

2. The list of approved books (is / are) on the noticeboard.
Answer: is. The subject is “list,” not “books.”

3. Neither the manager nor the employees (was / were) informed.
Answer: were. The nearest subject, “employees,” is plural.

4. Physics (is / are) considered a difficult subject.
Answer: is. It looks plural but is singular.

5. Fifty thousand rupees (is / are) a fair salary.
Answer: is. The amount is a single sum.

6. The committee (has / have) reached a unanimous decision.
Answer: has. The group is acting as one unit.

7. The teacher, along with her students, (was / were) present.
Answer: was. “Along with” does not make the subject plural; the subject is “teacher.”

A quick self-check trick helps in tricky moments: cover up everything between the subject and the verb, find the one word that controls the sentence, and ask whether that word is singular or plural. As one grammar guide notes, English often refuses to follow its own rules, so when a sentence sounds awkward even after you have applied the rule correctly, rewriting it is perfectly acceptable. A sentence like “Neither she, my friends, nor I am going” is technically correct but clumsy, and reordering it reads far better.

Mastering these patterns pays off directly in professional writing. A clean, error-free resume and a well-phrased email show that you pay attention to detail, which is exactly the impression you want to create before anyone has even met you.

What do you think? Which of these special cases do you find hardest to remember in your own writing? Can you spot a subject-verb agreement slip in something you wrote recently and explain why the correction works?

References

1. https://www.grammarly.com/blog/grammar/grammar-basics-what-is-subject-verb-agreement/
2. https://writingcenter.gmu.edu/writing-resources/grammar-style/subject-verb-agreement
3. https://guides.library.lls.edu/c.php?g=1066706&p=7765396
4. https://www.touro.edu/departments/writing-center/tutorials/subject-verb-agreement/
5. https://lib.conestogac.on.ca/grammar/subject-verb-agreement
6. https://soundwriting.pugetsound.edu/universal/subject-verb-agreement.html
7. https://pressbooks.lib.vt.edu/commskillshandbook1/chapter/5-4-subject-verb-agreement/
8. https://www.grammarbook.com/blog/singular-vs-plural/subject-and-verb-agreement-with-collective-nouns/
9. https://en.wikipedia.org/wiki/American_and_British_English_grammatical_differences