Overview
Subject-Verb Agreement is the #1 most tested grammar rule on the Digital SAT. Questions appear in the Standard English Conventions domain under the sub-category Form, Structure, and Sense.
The question stem is always:
“Which choice completes the text so that it conforms to the conventions of Standard English?”
The four answer choices are different inflected forms of the same verb — e.g., is / are / was / were — so the only decision is: singular or plural?
The core rule is simple: a verb must agree with its subject in number (singular/plural). The SAT makes this hard by hiding the true subject behind intervening phrases, unusual sentence structures, and special-case nouns.
How to identify this question type: All four answer choices are the same verb in different forms. That is the signal to apply subject-verb agreement reasoning.
Key Points
1. The Three-Step Method
Apply this every time, without exception:
- Find the verb — the word that varies across the four answer choices
- Isolate the subject — cross out everything between the subject and verb (see below)
- Match — decide singular or plural; pick the correct verb form
Everything else in this entry is a specification of Step 2.
2. The Cross-Out Technique
The subject is never found inside these structures — cross them out immediately:
| What to cross out | Example |
|---|---|
| Prepositional phrases | of the students, in the lab, with her team |
| Appositives (set off by commas or dashes) | , a renowned biologist, |
| Relative clauses | who completed the study, which took three years |
| Participial phrases | having reviewed the data, |
| along with / as well as / in addition to / together with phrases | along with two colleagues |
Example:
The results of the three-year experiment, which the team conducted in isolation, ______ surprising.
Cross out: of the three-year experiment + which the team conducted in isolation True subject: The results → plural → answer: were
3. Indefinite Pronouns
Memorize both lists completely.
Always singular — the EACH family and the -ONE / -BODY / -THING family:
each, every, either, neither, one, much anyone, anybody, anything someone, somebody, something everyone, everybody, everything no one, nobody, nothing
Each of the students was expected to participate. Everyone in the three departments has been notified.
Always plural:
both, few, many, several, others
Both of the proposals were rejected.
Context-dependent — look at the noun in the of phrase:
all, any, none, some, most
- Some of the water is contaminated. (water = uncountable mass noun → singular)
- Some of the samples are contaminated. (samples = countable plural → plural)
4. Collective Nouns
In American English, collective nouns take singular verbs when the group acts as a single unit. On the Digital SAT, collective nouns are almost always singular.
Common collective nouns: team, group, committee, faculty, family, audience, class, government, staff, jury, public, crowd, panel, board
The committee has reached a decision. The team is preparing for the championship.
5. Compound Subjects
Joined by and → plural: The researcher and her assistant are presenting today.
Joined by or / nor → agree with the subject closer to the verb (proximity rule):
| Closer subject | Verb |
|---|---|
| Neither the students nor the teacher | was present. (teacher = singular) |
| Neither the teacher nor the students | were present. (students = plural) |
Write the sentence with the nearer subject directly before the verb to check: the teacher was ✓
6. Inverted Sentences
When the verb appears before the subject, mentally flip the sentence to normal order.
| Inverted | Normal Order | Verb |
|---|---|---|
| There are many factors… | Many factors are there | are (plural) |
| There is one exception… | One exception is there | is (singular) |
| Here come the results. | The results come here | come (plural) |
Questions follow the same logic: Where are the keys? → The keys are where?
7. Relative Clause Subjects (who / which / that)
The verb inside a relative clause agrees with the antecedent of the relative pronoun — not with the noun immediately before who/that/which.
Critical construction — “one of the [plural noun] who/that”:
- She is one of the scientists who have won this award. → antecedent = scientists (plural) → have
- She is the only scientist who has won this award. → antecedent = scientist (singular) → has
The presence or absence of the only changes the answer.
8. Special Singular Subjects
These always take a singular verb even when they sound plural:
| Category | Example |
|---|---|
| Gerund phrase as subject | Running every day is healthy. |
| Infinitive phrase as subject | To understand grammar takes practice. |
| Title of a work | ”The Brothers Karamazov” is a long novel. |
| Country / organization (plural in form, singular in meaning) | The United States is a large country. |
| Amount / distance / time as a unit | Twenty miles is a long way. / Two hours is enough. / Fifty dollars was the price. |
Pitfalls and Common Mistakes
Pitfall 1: Agreeing with the Nearest Noun, Not the True Subject
The most common error. Test writers place a plural noun directly before the verb to lure students into a plural verb when the true subject is singular (or vice versa).
The impact of the new regulations ____ still unclear. Trap: regulations is plural and immediately precedes the blank → students write are Correct: cross out of the new regulations → true subject = impact (singular) → is
Fix: Cross out the prepositional phrase before choosing.
Pitfall 2: Treating Collective Nouns as Plural
British English treats collective nouns as plural (the team are playing), but the SAT follows American English conventions where collective nouns are singular.
The research team ____ published its findings. Trap: team feels like many people → students write have Correct: team = singular in American English → has
Fix: On the SAT, if you see team / committee / group / jury, default to singular unless explicitly told otherwise.
Pitfall 3: Getting Confused by or/nor — Choosing the Wrong Closer Subject
Students often agree the verb with whichever subject they read first, not the nearer one.
Neither the proposed budget nor the alternative plans ____ ready for review. Trap: budget (singular) is read first → student writes was Correct: nearer subject = plans (plural) → were
Fix: Read the sentence backwards from the verb to find which subject is closer.
Pitfall 4: Forgetting That Indefinite Pronouns Are Singular
Everyone, each, neither, either feel plural in meaning but are grammatically singular. This is one of the most reliable traps on the SAT.
Each of the three experiments ____ yielded unexpected results. Trap: experiments is plural → students write have Correct: each = always singular → has
Fix: When you see an indefinite pronoun, immediately treat it as singular before reading the rest of the sentence.
Pitfall 5: “One of the [plural] who” vs. “The only one of the [plural] who”
This is a high-difficulty trap that appears rarely but consistently at the hardest level.
She is one of the few researchers who ____ published work in both fields. Answer: have — because who refers to researchers (plural), not one (singular)
She is the only one of the researchers who ____ published work in both fields. Answer: has — because the only one makes who refer back to the singular one
Fix: Check for the only — its presence changes the answer from plural to singular.
Pitfall 6: Amounts and Titles Sound Plural but Are Singular
Three hundred dollars, two miles, “The Grapes of Wrath” — all take singular verbs. Students see a plural form and write a plural verb.
Twelve weeks ____ not enough time to complete the study. Answer: is — twelve weeks as a unit of time is singular
Fix: If the subject is a measurement, price, distance, or title, treat it as singular.
Related Entries
- Pronoun_Antecedent_Agreement — parallel rule set; indefinite pronoun lists apply to both SVA and pronoun agreement
- Verb_Tense_Voice_Mood — once number is settled, tense and voice questions arise from the same verb slot
- Sentence_Boundaries — SVA errors often appear alongside boundary errors (run-ons, fragments) in the same question
- Modifier_Placement — intervening modifiers that obscure the subject are shared traps across SVA and modifier questions
- Parallel_Structure — compound subjects joined by and require plural verbs and often trigger parallel structure issues
Quick Reference Card
| Situation | Rule |
|---|---|
| Phrase between subject and verb | Cross it out; ignore it |
| EACH / EVERY / -ONE / -BODY / -THING | Always singular |
| BOTH / FEW / MANY / SEVERAL | Always plural |
| ALL / SOME / NONE / MOST | Match the of noun |
| Collective noun (team, committee…) | Singular (American English) |
| Compound with and | Plural |
| Compound with or / nor | Match the nearer subject |
| There is / There are | Find the real subject after the verb |
| Gerund or infinitive as subject | Singular |
| Title / country / amount as subject | Singular |
| One of the [plural] who | Plural verb (agrees with plural noun) |
| The only one of the [plural] who | Singular verb (agrees with one) |