Correct Agreement Errors — Correct subject-verb agreement...

SECTION 1

Historical Context & Motivation

English grammar has evolved dramatically over the centuries, but one rule has remained remarkably consistent: the subject of a sentence must agree with its verb in number. A singular subject takes a singular verb, and a plural subject takes a plural verb. This principle, known as subject-verb agreement, is one of the foundational rules of Standard English. Understanding where this rule comes from helps us appreciate why it matters on tests like the GED and in everyday writing.

~450

Old English Inflections

Old English (Anglo-Saxon) used complex verb endings that changed based on person, number, and tense. Agreement was enforced by dozens of distinct verb forms, making errors less common but the language harder to learn.

~1100

Middle English Simplification

After the Norman Conquest, English lost many of its inflectional endings. Verb forms simplified, but the core rule of matching subject and verb in number survived.

1762

Lowth's Grammar Codified Rules

Robert Lowth published 'A Short Introduction to English Grammar,' formalizing subject-verb agreement as a written rule. His prescriptive approach shaped English education for centuries.

1900s

Standardized Testing Era

Subject-verb agreement became a staple of grammar tests. The SAT, ACT, and GED all test the ability to spot and correct agreement errors, reflecting its importance in clear communication.

Today, subject-verb agreement errors remain among the most frequently tested grammar concepts on the GED. The challenge is not the rule itself—it is straightforward in simple sentences. The real difficulty arises when sentences become complex: when phrases separate the subject from the verb, when compound subjects appear, or when indefinite pronouns muddy the waters. This lesson will equip you to recognize and correct these errors confidently.

SECTION 2

Core Principles of Subject-Verb Agreement

Before tackling tricky sentences, you need to internalize the foundational principles that govern subject-verb agreement. Every agreement question on the GED ultimately comes down to these core ideas.

Singular ↔ Singular, Plural ↔ Plural

A singular subject requires a singular verb form. A plural subject requires a plural verb form. In present tense, singular verbs usually end in -s (e.g., "she runs"), while plural verbs do not (e.g., "they run").

Ignore Intervening Phrases

Words that come between the subject and verb—prepositional phrases, relative clauses, appositives—do not change the number of the subject. Strip them away mentally to find the true subject.

Compound Subjects Follow Logic

Subjects joined by "and" are usually plural. Subjects joined by "or" or "nor" agree with the subject closest to the verb.

Indefinite Pronouns Have Fixed Number

Words like "everyone," "each," and "nobody" are always singular. Words like "few," "many," and "several" are always plural. Some pronouns ("some," "all," "none") depend on context.

Inverted Sentences Still Must Agree

In questions and sentences beginning with "there" or "here," the subject often follows the verb. You must still identify the true subject to select the correct verb form.

✦ KEY TAKEAWAY

Think of subject-verb agreement like a dance partnership. The subject leads, and the verb must follow. No matter how many other dancers (prepositional phrases, modifiers) crowd the floor between them, the verb always matches its partner—the subject. If the subject is singular, the verb does a singular step; if the subject is plural, the verb does a plural step.

SECTION 3

Visual Explanation — Finding the True Subject

The most common trick on GED agreement questions is placing extra words between the subject and verb. The following diagram shows how to visually "strip away" intervening phrases to find the true subject and check agreement.

The diagram above shows how the prepositional phrase "of red and white roses" sits between the true subject (bouquet) and the verb (sits). Crossing out the intervening phrase reveals that the singular subject "bouquet" correctly pairs with the singular verb "sits."

This technique of mentally crossing out prepositional phrases is one of the most powerful strategies for GED grammar questions. Phrases that begin with words like "of," "in," "with," "along with," "as well as," "together with," and "including" are almost always interrupters. They may contain nouns that look like subjects, but they never are.

SECTION 4

How Subject-Verb Agreement Works in Detail

The Present-Tense Pattern

Subject-verb agreement is most visible in the present tense. In English, verbs change form to match the subject's number. Counterintuitively, it is the singular verb that gains an -s or -es ending, while plural verbs appear in their base form. This is the opposite of nouns, where adding -s makes a noun plural. This reversal is a major source of confusion.

Present-tense agreement patterns

Subject Type	Example Subject	Correct Verb Form	Incorrect Verb Form
Singular noun	The dog	runs	run
Plural noun	The dogs	run	runs
He / She / It	She	writes	write
I / You / We / They	They	write	writes

The Verb "To Be" — A Special Case

The verb "to be" is the most irregular verb in English and appears frequently on the GED. In the present tense, it takes three forms: "am" (with I), "is" (with singular subjects), and "are" (with plural subjects and "you"). In the past tense, it becomes "was" (singular) and "were" (plural). Getting "was" versus "were" wrong is one of the most common agreement errors tested.

⚠️ WATCH OUT

The phrase "there is" is singular ("There is a problem"), while "there are" is plural ("There are several problems"). Many speakers say "there's" even with plural subjects, but on the GED this is an error you must catch.

SECTION 5

Tricky Cases & Common Traps

The GED does not just test simple subject-verb pairs. It specifically targets the tricky cases that trip up careful writers. The diagram below categorizes the most common trap patterns you will encounter.

This classification chart shows the seven major trap categories that appear on the GED. Each category requires a specific strategy, but they all share one core approach: find the true subject and match it to the verb.

Indefinite Pronouns in Detail

Indefinite pronoun number chart

Always Singular	Always Plural	Depends on Context
each, every, everyone, everybody, everything	few, many, several, both	some, all, none, any, most
anyone, anybody, anything	(These are always plural regardless of context.)	Look at the noun in the "of" phrase: "Some of the cake is gone" (singular) vs. "Some of the cookies are gone" (plural).
someone, somebody, something, nobody, nothing, neither, either, one

SECTION 6

Worked Example — Finding & Fixing Agreement Errors

Let's walk through a GED-style sentence correction step by step. Here is the sentence: "Neither the coach nor the players was ready for the championship game."

Correcting a Neither/Nor Agreement Error

Step 1 — Identify the verbThe main verb in this sentence is "was." This is a past-tense form of "to be." The question is whether "was" agrees with the subject.

Verb identified: "was" (singular, past tense)

Step 2 — Identify the subjectThis is a compound subject joined by "neither...nor." The two parts of the subject are "the coach" (singular) and "the players" (plural). With "neither...nor" and "either...or" constructions, the verb agrees with the subject closest to the verb.

Closer subject: "the players" → plural

Step 3 — Check the agreementThe subject closest to the verb is "the players," which is plural. However, the verb "was" is singular. This is an agreement error. The plural subject "players" requires the plural verb "were."

Mismatch: plural subject "players" + singular verb "was"

Step 4 — Correct the sentenceReplace "was" with "were" to match the plural subject "players." The corrected sentence reads: "Neither the coach nor the players were ready for the championship game."

Corrected: "Neither the coach nor the players were ready for the championship game."

Step 5 — Verify by reversing the orderAs a double-check, notice that if the order were reversed—"Neither the players nor the coach was ready"—then "was" would be correct, because "coach" (singular) would be the closer subject. The proximity rule works both ways.

Confirmed: the verb must always match the nearer subject in or/nor constructions.

SECTION 7

Common Errors vs. Correct Forms

The table below lists the most frequently tested agreement error patterns on the GED. Study both the incorrect and correct versions to train your ear and eye to catch these mistakes quickly.

Common GED subject-verb agreement errors and corrections

Trap Type	Incorrect Sentence	Correct Sentence	Why
Prepositional phrase	The list of items were lost.	The list of items was lost.	"List" (singular) is the subject, not "items."
Indefinite pronoun	Everyone in the classes have homework.	Everyone in the classes has homework.	"Everyone" is always singular.
Inverted sentence	There is many reasons to study.	There are many reasons to study.	"Reasons" (plural) is the true subject.
Collective noun	The committee have reached a decision.	The committee has reached a decision.	"Committee" acts as one unit → singular.
Compound with "or"	Either the students or the teacher are leading.	Either the students or the teacher is leading.	"Teacher" (singular, closer to verb) governs agreement.
Relative clause	She is one of those people who believes in fairness.	She is one of those people who believe in fairness.	"Who" refers to "people" (plural), so the verb is "believe."

✦ KEY TAKEAWAY

Think of subject-verb agreement errors like a cell phone picking up the wrong Wi-Fi signal. The verb might "connect" to a nearby noun that is not the true subject—just as your phone might connect to your neighbor's network instead of yours. Your job is to make sure the verb locks onto the correct subject, even if a closer noun tries to interfere.

SECTION 8

Connection to Advanced Grammar & Editing Skills

Mastering subject-verb agreement is not just about passing the GED. It is a gateway skill for more advanced grammar concepts you will encounter on the SAT, ACT, and in college-level writing. The table below shows how this foundational rule connects to broader editing skills.

From GED to advanced standardized test grammar

GED Level (This Lesson)	SAT / ACT Level (Next Step)
Identify basic subject-verb agreement errors in simple and complex sentences.	Identify agreement errors in multi-clause sentences with embedded parenthetical information and appositives.
Apply the proximity rule for or/nor subjects.	Handle subject-verb agreement in sentences with correlative conjunctions and parallel structures.
Recognize always-singular indefinite pronouns.	Navigate context-dependent pronouns (some, all, none) that require analysis of the referent noun.
Fix errors with "there is/there are."	Manage agreement in inverted sentences with complex subject phrases and modifiers.

Beyond standardized tests, subject-verb agreement is central to pronoun-antecedent agreement, another critical grammar concept. The same logical process—finding the correct noun and matching it—applies when choosing between "he," "she," "they," "it," and other pronouns. If you can master subject-verb agreement, you have already built the analytical skill needed for pronoun agreement as well.

🔭 LOOKING AHEAD

On the GED Language Arts test, subject-verb agreement questions often appear alongside pronoun and modifier questions. Practicing all three together will make you a faster, more accurate editor.

SECTION 9

Practice Problems

Test your understanding with these five problems. Each one targets a different agreement trap. Try to identify the error and the correct form before reading the answer.

PROBLEM 1 — CONCEPTUAL

Which of the following sentences contains a subject-verb agreement error? (A) The dogs in the park run every morning. (B) The collection of stamps is valuable. (C) Every one of the students have completed the assignment. (D) Several of the books were damaged.

PROBLEM 2 — BASIC

Correct the agreement error in the following sentence: "There is several reasons why the project failed."

PROBLEM 3 — INTERMEDIATE

Choose the correct verb: "The group of scientists who (is / are) studying climate change (has / have) published new findings." Explain your reasoning for each choice.

PROBLEM 4 — APPLIED

Read the following passage and identify all subject-verb agreement errors. Then rewrite the passage correctly. "The results of the experiment, which was conducted over six months, shows that neither the temperature nor the humidity levels was responsible for the equipment failure. Each of the engineers agree that further testing are needed."

PROBLEM 5 — CRITICAL THINKING

Consider the sentence: "None of the evidence supports the defendant's claim." A classmate argues that "none" means "not one" and is always singular, so "supports" is always correct. Another classmate argues that "none" can be plural and "support" could also be correct. Who is right, and how would the meaning of the sentence change the answer?

SUMMARY

Summary — Correcting Subject-Verb Agreement Errors

Subject-verb agreement requires that a singular subject takes a singular verb and a plural subject takes a plural verb. The most common GED traps involve prepositional phrases that separate the subject from the verb, indefinite pronouns like "everyone" and "each" that are always singular, compound subjects joined by "and," "or," or "nor," and inverted sentences that begin with "there" or "here."

To correct agreement errors, follow this strategy: cross out intervening phrases, identify the true subject, determine whether it is singular or plural, and choose the verb form that matches. For or/nor constructions, remember that the verb agrees with the subject closest to the verb. For collective nouns like "team" and "committee," use a singular verb when the group acts as a unit. Practicing these patterns will build the quick-recognition skills you need on test day.