Subject-Verb Agreement Rules: Tips to Avoid Mistakes

Mastering subject-verb agreement is crucial for clear and effective communication in English. It ensures that your sentences are grammatically correct and easy to understand.

This article provides a comprehensive guide to subject-verb agreement rules, offering detailed explanations, examples, and practice exercises. Whether you’re a student, a professional, or simply someone looking to improve your English skills, this guide will help you build a solid foundation in this essential grammar concept and avoid common mistakes.

Table of Contents

  1. Introduction
  2. Definition of Subject-Verb Agreement
  3. Structural Breakdown
  4. Basic Rules of Subject-Verb Agreement
  5. Compound Subjects
  6. Collective Nouns
  7. Indefinite Pronouns
  8. Intervening Phrases and Clauses
  9. Inverted Sentences
  10. Linking Verbs
  11. Expressions of Quantity
  12. Titles and Names
  13. Relative Clauses
  14. Examples of Subject-Verb Agreement
  15. Usage Rules
  16. Common Mistakes
  17. Practice Exercises
  18. Advanced Topics
  19. FAQ
  20. Conclusion

Introduction

Subject-verb agreement is a fundamental aspect of English grammar that ensures clarity and grammatical correctness in writing and speech. It simply means that the verb in a sentence must agree in number (singular or plural) with its subject.

While the concept may seem straightforward, mastering it requires understanding various rules and exceptions. This article will guide you through the intricacies of subject-verb agreement, providing you with the knowledge and tools to avoid common errors and write with confidence.

Whether you are a student learning the basics of English grammar, a professional seeking to improve your writing skills, or an English language learner aiming for fluency, understanding subject-verb agreement is essential. By mastering this concept, you can ensure that your sentences are grammatically sound and convey your intended meaning accurately.

This comprehensive guide will cover all the key rules, exceptions, and common mistakes, equipping you with the skills to write and speak with precision and clarity.

Definition of Subject-Verb Agreement

Subject-verb agreement refers to the grammatical rule that the verb in a sentence must match its subject in number. In other words, a singular subject requires a singular verb, and a plural subject requires a plural verb.

This agreement ensures that the sentence is grammatically correct and easy to understand. The subject is the noun or pronoun that performs the action of the verb, while the verb expresses that action.

The primary function of subject-verb agreement is to maintain grammatical consistency within a sentence. It helps to avoid confusion and ambiguity by clearly indicating which subject performs which action. In English, verbs change their form depending on whether the subject is singular or plural, particularly in the present tense. For example, “he walks” (singular) versus “they walk” (plural). Understanding this basic principle is the foundation for mastering more complex rules.

Structural Breakdown

The basic structure of a sentence that demonstrates subject-verb agreement is simple: Subject + Verb. Identifying the subject and then choosing the correct form of the verb is key. In simple sentences, the subject is usually easy to spot. However, sentences can become more complex with the addition of phrases, clauses, and compound subjects, making it more challenging to determine the correct verb form.

Consider the sentence: “The cat sits on the mat.” Here, “cat” is the singular subject, and “sits” is the singular verb. If the subject were plural, like “cats,” the verb would change to “sit.” Understanding how subjects and verbs interact in different sentence structures is crucial for mastering subject-verb agreement. This includes recognizing compound subjects, collective nouns, and indefinite pronouns, each of which has its own set of rules.

Basic Rules of Subject-Verb Agreement

The fundamental principle of subject-verb agreement is that singular subjects take singular verbs, and plural subjects take plural verbs. In the present tense, most verbs add an “-s” or “-es” when used with a singular subject (he, she, it), but not with plural subjects (they, we, you) or the pronoun “I.” Here are some basic examples:

  • Singular: The dog barks.
  • Plural: The dogs bark.
  • Singular: She eats pizza.
  • Plural: They eat pizza.
  • Singular: It rains often.
  • Plural: We play outside.

These examples illustrate the core concept. However, subject-verb agreement can become more complex with compound subjects, collective nouns, and other grammatical structures.

The following sections will delve into these more intricate rules, providing detailed explanations and examples to help you navigate them effectively.

Compound Subjects

A compound subject is formed when two or more subjects are joined by a conjunction such as “and,” “or,” or “nor.” The rule for subject-verb agreement with compound subjects depends on the conjunction used.

Subjects Joined by ‘and’

When two or more subjects are joined by “and,” they generally form a plural subject and require a plural verb. For example: “John and Mary are going to the store.” However, there are exceptions. If the compound subject refers to a single entity or idea, it takes a singular verb. For instance: “Macaroni and cheese is my favorite dish.”

Sometimes, the subjects joined by “and” might be considered a single unit or refer to the same person or thing. In such cases, the verb remains singular. For example, “My friend and colleague is arriving tomorrow.” This implies that the friend and colleague are the same person.

Subjects Joined by ‘or’ or ‘nor’

When subjects are joined by “or” or “nor,” the verb agrees with the subject that is closest to it. This rule is known as the proximity rule. For example: “Either the cat or the dogs are responsible.” Here, the verb “are” agrees with “dogs” because it is closer to the verb. Conversely, “Either the dogs or the cat is responsible” uses the singular verb “is” because “cat” is closer.

This rule can sometimes lead to awkward sentences, so it’s often better to rephrase the sentence for clarity. For example, instead of “Neither the president nor his advisors agree,” you could say, “The president and his advisors do not agree.” This avoids the potential confusion caused by the proximity rule.

Collective Nouns

Collective nouns refer to a group of people or things as a single unit, such as “team,” “family,” “committee,” “audience,” and “government.” Whether a collective noun takes a singular or plural verb depends on whether the group is acting as a single unit or as individual members.

If the group is acting as a single, unified entity, the collective noun takes a singular verb. For example: “The team is playing well.” Here, the team is considered as one unit performing the action. However, if the members of the group are acting individually, the collective noun takes a plural verb. For example: “The team are arguing about their roles.” In this case, the members of the team are acting separately.

In American English, collective nouns are typically treated as singular. In British English, they are more often treated as plural when the focus is on the individual members. For example, in American English, you might say “The staff is well-trained.” In British English, you might say “The staff are well-trained.”

Indefinite Pronouns

Indefinite pronouns refer to nonspecific persons or things. Some indefinite pronouns are always singular (e.g., “each,” “every,” “everyone,” “someone,” “nobody”), while others are always plural (e.g., “both,” “few,” “many,” “several”).

Still others can be singular or plural depending on the context (e.g., “some,” “any,” “none,” “all,” “most”).

Singular indefinite pronouns always take singular verbs. For example: “Each has a different opinion.” “Everyone is welcome.” “Someone is knocking at the door.” Plural indefinite pronouns always take plural verbs. For example: “Both are correct.” “Few agree with the proposal.” “Many have already left.”

For indefinite pronouns that can be singular or plural, the verb agreement depends on the noun or pronoun to which the indefinite pronoun refers. For example: “Some of the cake is gone” (singular because “cake” is singular). “Some of the cookies are gone” (plural because “cookies” is plural). “None of the water was wasted” (singular because “water” is singular). “None of the students were present” (plural because “students” is plural).

Intervening Phrases and Clauses

Intervening phrases and clauses are groups of words that come between the subject and the verb. These phrases and clauses do not affect subject-verb agreement.

It is essential to identify the true subject of the sentence and ignore any intervening phrases or clauses when determining the correct verb form.

For example: “The box of chocolates is on the table.” The phrase “of chocolates” is an intervening phrase. The subject is “box,” which is singular, so the verb “is” is also singular. Another example: “The students who study hard get good grades.” The clause “who study hard” is an intervening clause. The subject is “students,” which is plural, so the verb “get” is also plural.

It is important to carefully identify the subject of the sentence and disregard any phrases or clauses that come between the subject and the verb. This will help you avoid errors in subject-verb agreement, especially in more complex sentences.

Inverted Sentences

In an inverted sentence, the verb comes before the subject. This often occurs in questions or when a sentence begins with a prepositional phrase.

In these cases, you need to identify the subject carefully to ensure correct subject-verb agreement.

For example, in the question “Are the books on the shelf?” the subject is “books,” which is plural, so the verb “are” is also plural. Another example: “There is a cat in the garden.” The subject is “cat,” which is singular, so the verb “is” is also singular. Note that “there” is an expletive and does not function as the subject.

Identifying the subject in inverted sentences can be tricky, but it is essential for correct subject-verb agreement. Pay attention to the word order and identify the noun or pronoun that the verb is referring to.

Linking Verbs

Linking verbs connect the subject of a sentence to a noun or adjective that describes or identifies the subject. Common linking verbs include “be” (is, are, was, were, am), “seem,” “become,” “appear,” and “feel.” The subject-verb agreement rule still applies with linking verbs: the verb must agree in number with the subject.

For example: “The flowers are beautiful.” Here, “are” is a linking verb connecting the subject “flowers” to the adjective “beautiful.” Since “flowers” is plural, the verb “are” is also plural. Another example: “He is a doctor.” In this case, “is” links the subject “he” to the noun “doctor.” Since “he” is singular, the verb “is” is also singular.

It is important to remember that the verb must agree with the subject, not with the noun or adjective that follows the linking verb. This is a common mistake, especially when the noun or adjective has a different number than the subject.

Expressions of Quantity

Expressions of quantity, such as “a lot,” “some,” “all,” “most,” and “none,” can be singular or plural depending on the noun they refer to. If the noun is countable, the expression of quantity is plural.

If the noun is uncountable, the expression of quantity is singular.

For example: “A lot of students are present.” “Students” is countable, so the verb “are” is plural. “A lot of water is needed.” “Water” is uncountable, so the verb “is” is singular. Another example: “Some of the books are missing.” “Books” is countable, so the verb “are” is plural. “Some of the information is incorrect.” “Information” is uncountable, so the verb “is” is singular.

Understanding whether the noun is countable or uncountable is crucial for determining the correct verb form with expressions of quantity. Pay attention to the noun that the expression of quantity modifies to ensure correct subject-verb agreement.

Titles and Names

Titles of books, movies, and songs, as well as names of organizations and companies, are generally treated as singular, even if they appear to be plural. This is because they are considered a single entity.

For example: “The Adventures of Tom Sawyer is a classic novel.” “The Beatles was a famous band.” “Microsoft is a multinational corporation.” In each of these examples, the title or name is treated as a singular subject and takes a singular verb, even though some of the titles or names contain plural words.

It is important to remember that titles and names are treated as singular entities, regardless of their apparent number. This will help you avoid errors in subject-verb agreement when using titles and names in your writing.

Relative Clauses

A relative clause is a clause that modifies a noun or pronoun. It is introduced by a relative pronoun such as “who,” “whom,” “which,” or “that.” The verb in a relative clause must agree in number with the noun or pronoun that the clause modifies.

For example: “The student who studies hard succeeds.” The relative clause “who studies hard” modifies “student,” which is singular, so the verb “succeeds” is also singular. Another example: “The students who study hard succeed.” The relative clause “who study hard” modifies “students,” which is plural, so the verb “succeed” is also plural.

It is essential to identify the noun or pronoun that the relative clause modifies and ensure that the verb in the relative clause agrees with it in number. This will help you avoid errors in subject-verb agreement when using relative clauses in your writing.

Examples of Subject-Verb Agreement

The following tables provide a comprehensive list of examples illustrating various subject-verb agreement rules. These examples are categorized to help you understand the different scenarios and exceptions.

Table 1: Basic Subject-Verb Agreement

This table illustrates the basic rules of subject-verb agreement with singular and plural subjects.

Subject Verb Example Sentence
He is He is a student.
She works She works at the hospital.
It rains It rains frequently in the spring.
I am I am happy to be here.
You are You are a talented musician.
We play We play soccer every weekend.
They live They live in New York City.
The dog barks The dog barks loudly.
The cat sleeps The cat sleeps on the couch.
The bird sings The bird sings beautifully.
The dogs bark The dogs bark at strangers.
The cats sleep The cats sleep all day.
The birds sing The birds sing in the morning.
My friend visits My friend visits me often.
My friends visit My friends visit me regularly.
The teacher explains The teacher explains the lesson clearly.
The teachers explain The teachers explain the concepts well.
The student studies The student studies diligently.
The students study The students study together.
The car runs The car runs smoothly.

Table 2: Compound Subjects

This table demonstrates subject-verb agreement with compound subjects joined by “and,” “or,” and “nor.”

Compound Subject Verb Example Sentence
John and Mary are John and Mary are going to the party.
The dog and the cat play The dog and the cat play together.
My brother and I are My brother and I are planning a trip.
Macaroni and cheese is Macaroni and cheese is my favorite food.
Peanut butter and jelly is Peanut butter and jelly is a classic combination.
The president and CEO is The president and CEO is giving a speech.
Either the cat or the dogs are Either the cat or the dogs are responsible for the mess.
Either the dogs or the cat is Either the dogs or the cat is responsible for the mess.
Neither John nor Mary is Neither John nor Mary is available right now.
Neither the students nor the teacher is Neither the students nor the teacher is happy with the results.
Neither the teacher nor the students are Neither the teacher nor the students are happy with the results.
My friend and colleague is My friend and colleague is arriving tomorrow.
Pizza and beer is Pizza and beer is what I want for dinner.
The actor and singer is The actor and singer is very talented.
The bed and breakfast is The bed and breakfast is fully booked.
Both the car and the truck are Both the car and the truck are in the garage.
Not only the book but also the pen is Not only the book but also the pen is missing.
Not only the pens but also the book are Not only the pens but also the book are missing.
The director and writer is The director and writer is presenting the film.
Either the manager or the employees are Either the manager or the employees are going to be late.

Table 3: Indefinite Pronouns

This table illustrates subject-verb agreement with various indefinite pronouns.

Indefinite Pronoun Verb Example Sentence
Each has Each has a different opinion.
Every is Every student is required to attend.
Everyone is Everyone is welcome to join us.
Someone is Someone is knocking at the door.
Nobody knows Nobody knows the answer.
Both are Both are correct.
Few agree Few agree with the proposal.
Many have Many have already left the meeting.
Several are Several are interested in the project.
Some (of the cake) is Some of the cake is gone.
Some (of the cookies) are Some of the cookies are missing.
Any (of the water) is Any of the water is safe to drink.
Any (of the apples) are Any of the apples are ripe.
None (of the water) was None of the water was wasted.
None (of the students) were None of the students were present.
All (of the money) is All of the money is accounted for.
All (of the books) are All of the books are on the shelf.
Most (of the pie) is Most of the pie is eaten.
Most (of the grapes) are Most of the grapes are sour.
Everything is Everything is ready for the event.

Table 4: Collective Nouns

This table shows how collective nouns can take singular or plural verbs depending on the context.

Collective Noun Verb Example Sentence
The team is The team is playing well.
The team are The team are arguing about their roles.
The family is The family is planning a vacation.
The family are The family are having different opinions.
The committee has The committee has made a decision.
The committee have The committee have expressed their concerns.
The audience is The audience is enjoying the performance.
The audience are The audience are clapping enthusiastically.
The government is The government is implementing new policies.
The government are The government are divided on the issue.
The staff is The staff is well-trained. (American English)
The staff are The staff are well-trained. (British English)
The jury has The jury has reached a verdict.
The jury are The jury are still deliberating.
The class is The class is taking a test.
The class are The class are working on different projects.
The group is The group is meeting tomorrow.
The group are The group are discussing their individual tasks.
The crowd is The crowd is cheering loudly.
The crowd are The crowd are dispersing after the event.

Table 5: Titles and Names

This table demonstrates that titles and names are treated as singular entities.

Title/Name Verb Example Sentence
The Adventures of Tom Sawyer is The Adventures of Tom Sawyer is a classic novel.
The Beatles was The Beatles was a famous band.
Microsoft is Microsoft is a multinational corporation.
Friends is Friends is a popular TV show.
Guns N’ Roses is Guns N’ Roses is planning a reunion tour.
The United Nations is The United Nations is an international organization.
The Rolling Stones is The Rolling Stones is still touring.
Star Wars is Star Wars is a science fiction franchise.
Game of Thrones is Game of Thrones is a well-known TV series.
AC/DC is AC/DC is an Australian rock band.
Led Zeppelin is Led Zeppelin is considered one of the greatest rock bands.
The Lord of the Rings is The Lord of the Rings is an epic fantasy novel.
Harry Potter is Harry Potter is a series of fantasy novels.
The Avengers is The Avengers is a superhero film.
Jurassic Park is Jurassic Park is a science fiction film.
Coca-Cola is Coca-Cola is a popular beverage.
Nike is Nike is a sportswear company.
Samsung is Samsung is a technology company.
Toyota is Toyota is a car manufacturer.
McDonald’s is McDonald’s is a fast-food chain.

Usage Rules

The fundamental rule of subject-verb agreement is that a singular subject takes a singular verb, and a plural subject takes a plural verb. However, several factors can complicate this basic rule.

Understanding these factors is crucial for accurate subject-verb agreement in various contexts.

Rule 1: Identify the subject. The first step is to identify the true subject of the sentence. Ignore any intervening phrases or clauses that come between the subject and the verb.

Rule 2: Consider compound subjects. Determine whether the compound subjects are joined by “and,” “or,” or “nor,” as this affects the verb form.

Rule 3: Pay attention to collective nouns. Decide whether the collective noun is acting as a single unit or as individual members.

Rule 4: Be aware of indefinite pronouns. Remember that some indefinite pronouns are always singular, some are always plural, and some can be either depending on the context.

Rule 5: Handle inverted sentences carefully. Identify the subject in inverted sentences to ensure correct verb agreement.

Rule 6: Understand linking verbs. Ensure that the linking verb agrees with the subject, not with the noun or adjective that follows the verb.

Rule 7: Pay attention to expressions of quantity. Determine whether the noun is countable or uncountable to choose the correct verb form.

Rule 8: Treat titles and names as singular. Remember that titles of works and names of organizations are generally treated as singular, even if they appear plural.

Rule 9: Ensure agreement in relative clauses. The verb in a relative clause must agree with the noun or pronoun that the clause modifies.

Common Mistakes

Subject-verb agreement errors are common, even among native English speakers. Understanding these common mistakes and how to avoid them can significantly improve your writing and speaking skills.

Mistake 1: Ignoring intervening phrases. Incorrect: The quality of the apples are poor. Correct: The quality of the apples is poor. (The subject is “quality,” not “apples.”)

Mistake 2: Incorrect agreement with compound subjects. Incorrect: John and Mary is going to the store. Correct: John and Mary are going to the store.

Mistake 3: Misunderstanding collective nouns. Incorrect: The team are playing well. (when referring to the team as a unit). Correct: The team is playing well.

Mistake 4: Incorrect use of indefinite pronouns. Incorrect: Everyone are welcome. Correct: Everyone is welcome.

Mistake 5: Errors in inverted sentences. Incorrect: There are a cat in the garden. Correct: There is a cat in the garden.

Mistake 6: Agreement with the wrong noun after linking verbs. Incorrect: The problem were the delays. Correct: The problem was

the delays.

Practice Exercises

To reinforce your understanding of subject-verb agreement, complete the following exercises. Identify the correct verb form in each sentence.

Exercise 1: Basic Subject-Verb Agreement

Choose the correct verb form in the following sentences:

  1. The dog (barks/bark) loudly.
    Answer

    barks

  2. The students (studies/study) hard for the exam.
    Answer

    study

  3. She (likes/like) to read novels.
    Answer

    likes

  4. They (plays/play) soccer every weekend.
    Answer

    play

  5. It (rains/rain) a lot in April.
    Answer

    rains

Exercise 2: Compound Subjects

Choose the correct verb form in the following sentences with compound subjects:

  1. John and Mary (is/are) going to the store.
    Answer

    are

  2. Either the cat or the dogs (is/are) responsible for the mess.
    Answer

    are

  3. Neither the students nor the teacher (is/are) happy with the results.
    Answer

    is

  4. Macaroni and cheese (is/are) my favorite dish.
    Answer

    is

  5. My friend and colleague (is/are) arriving tomorrow.
    Answer

    is

Exercise 3: Indefinite Pronouns

Choose the correct verb form in the following sentences with indefinite pronouns:

  1. Everyone (is/are) welcome to join us.
    Answer

    is

  2. Both (is/are) correct.
    Answer

    are

  3. Some of the cake (is/are) gone.
    Answer

    is

  4. None of the students (was/were) present.
    Answer

    were

  5. Each (has/have) a different opinion.
    Answer

    has

Exercise 4: Intervening Phrases

Choose the correct verb form in the following sentences with intervening phrases:

  1. The box of chocolates (is/are) on the table.
    Answer

    is

  2. The students who study hard (gets/get) good grades.
    Answer

    get

  3. The price of the tickets (was/were) too high.
    Answer

    was

  4. A collection of rare books (is/are) on display.
    Answer

    is

  5. The songs on the album (is/are) very popular.
    Answer

    are

Advanced Topics

While the basic rules of subject-verb agreement are relatively straightforward, there are some advanced topics that can further enhance your understanding and accuracy. These include:

  • Sentences with delayed subjects: In sentences where the subject is delayed or comes after the verb, it can be challenging to identify the correct verb form. For example, “There are many reasons why he is late.”
  • Subject-verb agreement with “one of those who”: This construction can be tricky because the relative clause can refer to either the singular “one” or the plural noun that follows “one of.” For example, “He is one of those who are always complaining.”
  • Subject-verb agreement in conditional sentences: Conditional sentences often use the subjunctive mood, which can affect subject-verb agreement. For example, “If I were you, I would apologize.”
  • Subject-verb agreement with gerunds and infinitives: When gerunds (verbs ending in “-ing”) or infinitives (to + verb) are used as subjects, they usually take a singular verb. For example, “Swimming is good exercise.” “To err is human.”

Exploring these advanced topics can help you refine your understanding of subject-verb agreement and write with greater precision and confidence.

FAQ

Why is subject-verb agreement important?

Subject-verb agreement is important because it ensures clarity and grammatical correctness in writing and speaking. It helps avoid confusion and ambiguity by clearly indicating which subject performs which action.

What is the basic rule of subject-verb agreement?

The basic rule is that singular subjects take singular verbs, and plural subjects take plural verbs.

How do I identify the subject in a sentence?

To identify the subject, look for the noun or pronoun that performs the action of the verb. Ignore any intervening phrases or clauses that come between the subject and the verb.

What are compound subjects?

Compound subjects are formed when two or more subjects are joined by a conjunction such as “and,” “or,” or “nor.” The rule for subject-verb agreement with compound subjects depends on the conjunction used.

How do collective nouns affect subject-verb agreement?

Whether a collective noun takes a singular or plural verb depends on whether the group is acting as a single unit or as individual members.

What are indefinite pronouns?

Indefinite pronouns refer to nonspecific persons or things. Some are always singular, some are always plural, and some can be either depending on the context.

What are intervening phrases and clauses?

Intervening phrases and clauses are groups of words that come between the subject and the verb. These phrases and clauses do not affect subject-verb agreement.

What are inverted sentences?

In an inverted sentence, the verb comes before the subject. In these cases, you need to identify the subject carefully to ensure correct subject-verb agreement.

What are linking verbs?

Linking verbs connect the subject of a sentence to a noun or adjective that describes or identifies the subject. The subject-verb agreement rule still applies with linking verbs: the verb must agree in number with the subject.

How do expressions of quantity affect subject-verb agreement?

Expressions of quantity can be singular or plural depending on the noun they refer to. If the noun is countable, the expression of quantity is plural.

If the noun is uncountable, the expression of quantity is singular.

Are titles and names treated as singular or plural?

Titles of works and names of organizations are generally treated as singular, even if they appear plural.

How do relative clauses affect subject-verb agreement?

The verb in a relative clause must agree in number with the noun or pronoun that the clause modifies.

Conclusion

Mastering subject-verb agreement is essential for clear and effective communication in English. By understanding the basic rules, exceptions, and common mistakes, you can significantly improve your writing and speaking skills.

This comprehensive guide has provided you with the knowledge and tools to navigate the complexities of subject-verb agreement and avoid errors. Remember to identify the true subject of the sentence, consider compound subjects and collective nouns, be aware of indefinite pronouns, and handle inverted sentences carefully.

With practice and attention to detail, you can confidently apply the rules of subject-verb agreement and write with precision and clarity. Keep practicing, and you’ll find that subject-verb agreement becomes second nature, enhancing the overall quality of your communication.

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