"He don't know." Almost every learner has said this at some point, and almost every learner has also written "The list of items are ready" without noticing anything wrong — because on the surface, both sentences feel fine. Subject-verb agreement (also called concord) is the grammar rule that says the verb must match its subject — and while the basic version of this rule is simple, English has a long list of tricky, specific situations where the "obvious" choice is actually wrong. This is the complete guide: every rule, every exception, and every commonly confused case, explained clearly with examples for each one, so nothing is left vague.

What Is Subject-Verb Agreement?

Subject-verb agreement means choosing the verb form that matches its subject in number — one thing (singular) or more than one thing (plural) — and in person (I / you / he-she-it / we / they). Get the subject right, and the verb almost always follows automatically — the whole skill of this topic is learning to correctly identify what the real subject is, because English hides it in surprising places.

The Basic Rule (and Why "He Don't" Is Wrong)

In the present simple tense, a singular third-person subject (he, she, it, or a singular noun) adds -s / -es to the verb. Every other subject (I, you, we, they, or a plural noun) uses the base form.

This is exactly the rule behind the classic mistake: don't is short for do not, which belongs with I / you / we / they. A third-person singular subject needs doesn't (does not) instead.

• ❌ He don't like coffee. → ✅ He doesn't like coffee.
• ❌ She don't live here anymore. → ✅ She doesn't live here anymore.
• ❌ It don't matter. → ✅ It doesn't matter.

The be-verb follows its own pattern, which is worth memorizing separately:

Compound Subjects: And / Or / Nor

Joined by "and" → usually plural

Two subjects connected by and normally take a plural verb, because together they add up to more than one.

• Tom and Jerry are best friends.
• Rice and beans are served here.
• My brother and I are going to the market.

Exception: if the two nouns joined by and together describe one single idea, dish, or person, the verb stays singular.

• Bread and butter is my favorite breakfast. (one dish)
• Slow and steady wins the race. (one idea)
• The CEO and founder of the company is here today. (one person, two titles)

Joined by "or / nor / either...or / neither...nor" → the closer subject wins

With these connectors, the verb agrees with whichever subject is closest to the verb, not the first one.

• Either the teacher or the students are wrong. (students, plural, is closer)
• Either the students or the teacher is wrong. (teacher, singular, is closer)
• Neither my parents nor my sister is coming. (sister, singular, is closer)
• Neither my sister nor my parents are coming. (parents, plural, is closer)

Words That Get in the Way

A phrase sitting between the subject and the verb does not change what the verb agrees with. This is one of the biggest sources of mistakes, because the noun closest to the verb is often not the real subject.

• The list of items is on the table. (subject = list, singular — not items)
• One of the boxes is missing. (subject = one, singular — not boxes)
• The quality of these photos is excellent.

Phrases like as well as, along with, together with, in addition to, besides, accompanied by behave the same way — unlike and, they don't combine two subjects into a plural one.

• The captain, as well as the players, was exhausted. (subject = captain alone)
• The manager, along with her team, is arriving today.
• Compare: The captain and the players were exhausted. (and really does join them into a plural subject here)

Indefinite Pronouns: Always Singular

Words like everyone, everybody, everything, someone, somebody, something, anyone, anybody, anything, no one, nobody, nothing, and one always take a singular verb — even though "everyone" can feel like it means a lot of people.

• Everyone is here.
• Somebody has left their bag behind.
• Nothing seems to work today.
• Everybody knows the answer.
• Each of the students has a laptop. (each of + plural noun is still singular)

Neither, Either, and None: The Trickiest Three

Neither and either, used alone or followed by of + plural noun, are formally singular:

• Neither of them is right.
• Either of the answers is acceptable.
• Neither answer is correct.

In casual spoken English, "Neither of them are right" is extremely common and easily understood — but formal writing, exams, and careful editing expect the singular verb.

None is more flexible. When it clearly means "not one," use a singular verb; when it means "not any" of a group and the emphasis is on the individual members, a plural verb is common and widely accepted today.

• None of the food is left. (not one bit — singular, uncountable)
• None of the students has finished. (formal — "not one student")
• None of the students have finished. (common in modern usage)

Collective Nouns: Team, Family, Jury

A collective noun names a group treated as one thing: team, family, committee, government, staff, audience, jury, crowd, class, company, band.

• American English almost always treats these as singular — the group acts as one unit: "The team is playing well." "My family is coming for dinner."
• British English allows a plural verb when the focus is on the individual members acting separately: "The team are arguing among themselves." "The committee have different opinions."

Whichever style you use, stay consistent within the same piece of writing.

Nouns That Look Plural but Aren't

Some nouns end in -s but name a single subject, field, or disease, and always take a singular verb: news, mathematics, physics, economics, politics (as a subject), measles, athletics, statistics (as a field of study), gymnastics.

• The news is good today.
• Mathematics is my favorite subject.
• Measles is a contagious disease.
• Economics affects everyone's daily life.

Nouns That Are Always Plural

A separate group of nouns names a single item made of two joined parts, and these always take a plural verb: scissors, trousers, pants, glasses (spectacles), pliers, jeans, shorts, binoculars.

• These scissors are sharp.
• My glasses are broken.
• Those trousers are too tight.

If you add "a pair of," the verb switches to agree with pair instead, which is singular:

• A pair of scissors is on the desk.
• Two pairs of scissors are on the desk.

There Is / There Are, Here Is / Here Are

In these sentences, there and here are not the real subject — the noun that comes after the verb is. Look past "there/here is/are" to find the true subject before choosing the verb.

• There is a book on the table. (subject: a book, singular)
• There are three books on the table. (subject: three books, plural)
• Here comes the bus.
• Here come the buses.

A very common informal mistake is using "there's" before a plural noun ("There's some issues") — in careful or formal writing, this should be "There are some issues."

Titles, Names, and Amounts as One Unit

Titles of books, films, and the names of countries or organizations can look plural but refer to a single thing, so they take a singular verb.

• "The Avengers is one of the highest-grossing film series ever." (one series)
• The United States has a large economy. (one country)
• "Great Expectations is a novel by Charles Dickens." (one book)

The same logic applies to a measurement of money, time, weight, or distance when it's treated as a single amount, not individual units.

• Ten dollars is not enough for this. (one amount of money)
• Five years is a long time to wait. (one span of time)
• Two kilometers is too far to walk. (one distance)

"A Number Of" vs. "The Number Of" (and Fractions)

This pair confuses even advanced learners because they look almost identical but behave in opposite ways:

• A number of employees are complaining about the new policy.
• The number of complaints is rising every month.

The same "agree with the noun after of" logic applies to fractions, percentages, and words like majority, most, some, all, plenty when followed by of + noun:

• Half of the cake is gone. (cake = singular/uncountable)
• Half of the students are absent. (students = plural)
• 80% of the work is done.
• 80% of the workers are on strike.
• The majority of the committee agrees with the plan.
• The majority of voters oppose the plan.

Gerunds and Infinitives as the Subject

When an -ing form (gerund) or a to + verb (infinitive) acts as the subject of a sentence, treat it as a single idea and use a singular verb — even if the activity itself involves many things.

• Swimming is great exercise.
• Reading books relaxes me.
• To finish this project on time is our main goal.
• Eating vegetables improves your health.

Each and Every With Compound Subjects

Placing each or every in front of a subject joined by and makes the whole subject singular, even though two or more nouns are named.

• Each boy and girl has a badge.
• Every student and teacher is required to attend.
• Every man, woman, and child was rescued safely.

Relative Clauses: Who, Which, That

Inside a clause beginning with who, which, or that, the verb must agree with whatever noun that pronoun stands for (its antecedent) — not with the subject of the main sentence.

• He is one of the students who work hard. (who refers back to students, which is plural)
• This is the only one of the pens that works. (that refers to "the only one" — a single pen, singular)

A quick way to check: find exactly what noun the pronoun is standing in for, then match the verb to that noun alone.

Master Reference Table

Practice: Choose the Correct Verb

Fill in the blank with the correct form of the verb in brackets:

1. "He ______ (not / like) mushrooms." → doesn't like
2. "Neither of the answers ______ (be) correct." → is
3. "The team ______ (practice) every day this week." → is practicing (AmE)
4. "A number of employees ______ (complain) about the policy." → are complaining
5. "The number of complaints ______ (rise) steadily." → is rising
6. "Mathematics ______ (be) my strongest subject." → is
7. "These scissors ______ (be) very sharp." → are
8. "Each student and teacher ______ (have) to sign in." → has
9. "There ______ (be) several reasons for the delay." → are
10. "Swimming every morning ______ (keep) me fit." → keeps
11. "Either my brother or my parents ______ (be) picking me up." → are

Frequently Asked Questions

Summary

• The verb must match the true subject in number — ignore any phrase sitting between them.
• He/she/it takes doesn't, not don't.
• And usually joins subjects into a plural, unless they describe one combined idea.
• Or / nor / either...or / neither...nor — the verb agrees with the subject closest to it.
• Everyone, someone, nobody, each, either, neither (formally) are always singular.
• Collective nouns (team, family, jury) are usually singular in American English, and either in British English.
• News, mathematics, measles = singular; scissors, trousers, glasses = plural.
• In "there is/are" and "here is/are," the verb agrees with the noun that follows it, not with "there/here."
• A number of = plural; the number of = singular.
• A gerund or infinitive used as a subject is always singular.