Subject-Verb Agreement

Basic Subject-Verb Agreement

A verb must agree with its subject in number and person. This principle — called subject-verb agreement — means a singular subject takes a singular verb and a plural subject takes a plural verb. In the present tense, most singular verbs end in -s or -es, while plural verbs do not. In the past tense, the distinction disappears for regular verbs (they all end in -ed), but the auxiliary changes with person (e.g., "he was" vs. "they were").
Third person singular: Add -s or -es to the base verb ("She runs", "It matters").
Third person plural: Use the base form without -s ("They run", "The results matter").
First and second person: Use the base form for both singular and plural ("I run", "We run", "You run").
Auxiliary verbs: Forms of be and have change across persons — "I am / You are / He is" and "I have / He has / They have".

Present-Tense Verb Forms by Person and Number

•
1st person singular: I work
•
2nd person singular: You work
•
3rd person singular: He / She / It works
•
1st person plural: We work
•
2nd person plural: You work
•
3rd person plural: They work

Intervening Phrases and Clauses

When a prepositional phrase or a relative clause comes between the subject and the verb, it can trick you into matching the verb with the wrong noun. The verb must agree with the actual subject — not with a noun inside the intervening phrase. Identify the subject first, mentally delete any phrases between it and the verb, and then choose the verb form.
Prepositional phrases: "The box of chocolates is on the table" — the subject is "box" (singular), not "chocolates".
Relative clauses: "The scientist who studies marine biology has published her findings" — the subject is "scientist" (singular), not "biology".
Appositives: "Dr. Khan, along with her colleagues, attends every conference" — the subject is "Dr. Khan" (singular); "along with her colleagues" is parenthetical.
Phrases with with / together with / as well as: These do not create compound subjects. The verb agrees with the main subject only.

Compound Subjects

A compound subject joined by "and" generally takes a plural verb because it refers to two or more entities. However, when the joined nouns name a single person, thing, or concept, the verb is singular. This exception applies to phrases where both elements together describe one unit.
Standard rule: "Bread and butter are sold at the shop" — two separate items → plural verb.
Single-unit exception: "Bread and butter is my usual breakfast" — one combined concept → singular verb.
Titles and phrases: "The president and CEO has addressed the board" — one person holding two titles → singular verb.
Each / every before a compound subject: "Every boy and girl has received a certificate" — singular verb because "every" distributes individually.
When a compound subject is joined by correlative conjunctions such as "or", "nor", "either...or", "neither...nor", or "not only...but also", the verb agrees with the subject that is closest to it. This is called the proximity rule.
Singular + plural → verb matches nearer: "Neither the teacher nor the students were present" — "students" is closer → plural verb.
Plural + singular → verb matches nearer: "Neither the students nor the teacher was present" — "teacher" is closer → singular verb.
Both singular → singular verb: "Either the dog or the cat has knocked over the vase" — both subjects singular → singular verb.
Both plural → plural verb: "Neither the parents nor the teachers have complained" — both subjects plural → plural verb.

Indefinite Pronouns and Agreement

Most indefinite pronouns are grammatically singular and take a singular verb. These include words that refer to unspecified people or things. Even though some — like "everyone" or "everybody" — seem to refer to many people, they function as singular nouns in English grammar.
Always singular: each, either, neither, one, everyone, everybody, everything, anyone, anybody, anything, someone, somebody, something, no one, nobody, nothing.
Example: "Everyone in the class has finished the assignment" — singular verb "has".
Example: "Neither of the options appeals to me" — singular verb "appeals".

Indefinite Pronouns — Always Singular

•
each, either, neither
•
one, anyone, everyone, someone, no one
•
anybody, everybody, somebody, nobody
•
anything, everything, something, nothing
Some indefinite pronouns can be singular or plural depending on the noun they refer to. Words like "some", "any", "all", "most", and "none" follow the notional agreement principle — they take a singular verb when referring to an uncountable concept and a plural verb when referring to countable items.
Referring to uncountable → singular: "Most of the water has evaporated" — "water" is uncountable → singular verb.
Referring to countable plural → plural: "Most of the students have arrived" — "students" is countable plural → plural verb.
None: Can be singular or plural — "None of the food is left" (uncountable) vs. "None of the answers are correct" (countable plural).
Rule of thumb: Look at the of-phrase that follows the indefinite pronoun to determine number.

Indefinite Pronouns — Context-Dependent

•
some, any, all, most, none, more, half
•
Singular if the noun in the of-phrase is uncountable
•
Plural if the noun in the of-phrase is countable plural

Collective Nouns and Agreement

A collective noun names a group — family, team, committee, audience, class, jury, staff. In standard English, a collective noun takes a singular verb when the group acts as a single unit and a plural verb when the members of the group act individually. American English strongly favours the singular verb; British English accepts plural verbs more freely when individual action is emphasised.
Group as one unit → singular: "The committee has reached its decision" — acting together as one body.
Individuals within the group → plural: "The committee have disagreed among themselves" — members acting separately.
American English tendency: Prefer singular for collective nouns unless the context clearly stresses individual actions.
Organisations as singular: "The United Nations has issued a statement" — treated as a single entity.

Common Collective Nouns

•
family, team, committee, jury, staff
•
audience, crowd, public, group
•
class, faculty, orchestra, choir
•
government, organisation, company, committee

Special Agreement Cases

In an inverted sentence, the verb comes before the subject. This happens in questions, sentences beginning with "there" or "here", and sentences where a prepositional phrase of place or direction is fronted. Despite the unusual word order, the verb must still agree with the true subject — the noun that follows it.
There / here sentences: "There are three books on the shelf" — the subject is "three books" (plural), not "there".
Questions: "Has the mail arrived?" — the subject is "the mail" (singular).
Place adverbials fronted: "Around the corner stands an old mosque" — the subject is "an old mosque" (singular).
Negative inversions: "Rarely have the results been so conclusive" — the subject is "the results" (plural).
Nouns that express amounts — distances, periods of time, sums of money, weights, and fractions — are treated as singular when they refer to a single total quantity. They take a singular verb because the focus is on the amount as one unit, not on the individual items that make it up.
Distance: "Fifty kilometres is a long distance to drive every day" — singular verb.
Time: "Three hours was not enough to finish the paper" — singular verb.
Money: "Five hundred rupees is the entry fee" — singular verb.
Mathematical expressions: "Two plus two equals four" — singular verb.
Titles of books, films, organisations, and works of art are singular, even if the title itself contains a plural word. Similarly, a country name that is plural in form takes a singular verb.
Book titles: "Great Expectations is a novel by Dickens" — singular verb despite the plural word in the title.
Country names: "The United States has a large economy" — singular verb.
News: "The news is surprising" — singular, even though "news" ends in -s.
Subjects ending in -ics: "Mathematics is challenging" — singular when referring to the field of study. However, "The statistics show a decline" — plural when referring to individual data points.
A relative pronoun (who, which, that) used as the subject of a relative clause must agree in number with its antecedent — the noun it refers to. If the antecedent is singular, the verb inside the relative clause is singular; if the antecedent is plural, the verb is plural.
Singular antecedent: "She is one of the students who study late" — the antecedent of "who" is "students" (plural) → "study".
One of the + plural + who/that + plural verb: "This is one of the books that were missing" — "that" refers to "books" → plural verb.
The only one of + plural + who/that + singular verb: "He is the only one of the players who has scored a century" — "who" refers to "the only one" → singular verb.
Which and that: Follow the same rule — match the verb to the antecedent.