Subject-verb Agreement

Table of Contents
1. Basic Subject-Verb Agreement Rules
2. Compound Subjects
3. Intervening Phrases and Clauses
4. Indefinite Pronouns
5. Special Cases and Exceptions
6. Common Confusing Constructions
7. Agreement with Pronouns
8. Common Student Mistakes
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Subject-verb agreement is a fundamental grammatical rule that ensures the subject and verb in a sentence match in number (singular or plural). This concept is critical for writing clear, grammatically correct sentences. Mastering subject-verb agreement helps you avoid common errors in formal writing and standardized tests.

1. Basic Subject-Verb Agreement Rules

1.1 Singular and Plural Agreement

• Singular subjects take singular verbs. A singular verb typically ends in -s or -es in present tense (e.g., walks, runs, goes).
• Plural subjects take plural verbs. Plural verbs do not end in -s in present tense (e.g., walk, run, go).
• Example (Singular): The dog barks loudly. (Subject: dog; Verb: barks)
• Example (Plural): The dogs bark loudly. (Subject: dogs; Verb: bark)

1.2 Third Person Singular Rule

• In present tense, verbs with third person singular subjects (he, she, it, or singular nouns) add -s or -es.
• Example: She writes poetry. He teaches mathematics. It rains frequently.
• Trap Alert: First and second person singular (I, you) do NOT take the -s ending. "I walk" and "You walk" are correct.

2. Compound Subjects

2.1 Subjects Joined by "And"

• When two or more subjects are connected by "and," use a plural verb.
• Example: The teacher and the student are in the classroom.
• Example: Coffee and tea contain caffeine.
• Exception: When compound subjects refer to a single entity or concept, use a singular verb. Example: Peanut butter and jelly is my favorite sandwich.

2.2 Subjects Joined by "Or" or "Nor"

• When subjects are joined by "or," "nor," "either...or," or "neither...nor," the verb agrees with the subject closest to it.
• Example (Singular closer): Neither the students nor the teacher is available.
• Example (Plural closer): Neither the teacher nor the students are available.
• Trap Alert: The verb matches the NEAREST subject, not the first one mentioned.

3. Intervening Phrases and Clauses

3.1 Phrases Between Subject and Verb

• Words or phrases that come between the subject and verb do NOT affect agreement.
• Identify the true subject and ignore prepositional phrases, appositives, or descriptive clauses.
• Common intervening phrases: of, in, with, along with, together with, as well as, in addition to.
• Example: The box of chocolates is on the table. (Subject: box, not chocolates)
• Example: The students in the classroom are studying. (Subject: students, not classroom)
• Trap Alert: "As well as" and "along with" do NOT create compound subjects. Example: The teacher, as well as the students, is excited. (Verb agrees with "teacher")

3.2 Relative Pronouns as Subjects

• When relative pronouns (who, which, that) serve as subjects, the verb agrees with the pronoun's antecedent.
• Example: She is one of the students who are graduating. ("Who" refers to "students," which is plural)
• Example: He is the only one of the candidates who has experience. ("Who" refers to "one," which is singular)

4. Indefinite Pronouns

4.1 Always Singular Indefinite Pronouns

• The following indefinite pronouns always take singular verbs:
• Each, every, either, neither, one, someone, anyone, everyone, no one, somebody, anybody, everybody, nobody, something, anything, everything, nothing
• Example: Everyone is welcome to attend.
• Example: Neither of the answers is correct.
• Trap Alert: "None" can be singular or plural depending on context, but is often treated as singular in formal writing.

4.2 Always Plural Indefinite Pronouns

• The following indefinite pronouns always take plural verbs:
• Both, few, many, several, others
• Example: Both of the students are present.
• Example: Many have tried, but few have succeeded.

4.3 Variable Indefinite Pronouns

• These pronouns can be singular or plural depending on the noun they refer to:
• All, any, more, most, none, some
• If they refer to a singular noun or uncountable quantity, use a singular verb.
• If they refer to plural countable nouns, use a plural verb.
• Example (Singular): All of the cake is gone. (Cake is singular/uncountable)
• Example (Plural): All of the cookies are gone. (Cookies is plural)

5. Special Cases and Exceptions

5.1 Collective Nouns

• Collective nouns (team, committee, family, jury, class, group, audience) can be singular or plural.
• Use a singular verb when the group acts as a single unit.
• Use a plural verb when members act individually.
• Example (Singular): The committee meets every Monday. (Acting as one unit)
• Example (Plural): The committee disagree on the proposal. (Members have different opinions)
• Note: American English typically treats collective nouns as singular; British English may use plural more frequently.

5.2 Subjects Following the Verb

• In inverted sentences (verb comes before subject), identify the true subject first.
• Common inversions: Questions, sentences beginning with "there" or "here," sentences with adverbial phrases at the start.
• Example: There are three books on the shelf. (Subject: books; Verb: are)
• Example: Here comes the bus. (Subject: bus; Verb: comes)
• Example: On the table were the keys. (Subject: keys; Verb: were)

5.3 Titles, Names, and Words as Words

• Titles of books, movies, organizations, even if plural in form, take singular verbs.
• Example: "The Chronicles of Narnia" is a beloved series.
• Example: The United States is a federal republic.
• Words referred to as words take singular verbs.
• Example: "Scissors" is a plural noun.

5.4 Measurements, Time, and Money

• When referring to a single amount, quantity, or period, use a singular verb.
• Example: Five dollars is the price. (One amount)
• Example: Ten miles is a long distance. (One distance)
• Example: Three weeks is not enough time. (One period)

5.5 Fractions and Percentages

• The verb agrees with the noun in the prepositional phrase following the fraction or percentage.
• Example: Half of the cake is eaten. (Cake is singular)
• Example: Half of the students are absent. (Students is plural)
• Example: Seventy percent of the work is complete. (Work is singular)

5.6 Gerunds and Infinitives as Subjects

• Gerunds (verb + -ing used as a noun) and infinitives (to + verb) used as subjects take singular verbs.
• Example: Swimming is excellent exercise. (Gerund subject: Swimming)
• Example: To read regularly improves vocabulary. (Infinitive subject: To read)

6. Common Confusing Constructions

6.1 "Number" vs "A Number"

• "The number of" takes a singular verb (refers to the total).
• "A number of" takes a plural verb (means several/many).
• Example: The number of applicants is increasing.
• Example: A number of applicants are waiting.

6.2 Plural Form Nouns That Are Singular

• Some nouns ending in -s appear plural but are actually singular: news, mathematics, physics, economics, politics, measles, mumps.
• Example: The news is encouraging.
• Example: Mathematics requires logical thinking.
• Trap Alert: "Statistics" is singular when referring to the field of study, but plural when referring to numerical data.

6.3 Plural Form Nouns Always Plural

• Some nouns are always plural and take plural verbs: scissors, pants, trousers, glasses (eyewear), tweezers, pliers.
• Example: The scissors are on the desk.
• Note: When preceded by "a pair of," use a singular verb: A pair of scissors is needed.

6.4 Latin and Greek Plurals

• Recognize irregular plurals from Latin and Greek origins.
• Examples: criterion/criteria, phenomenon/phenomena, datum/data, analysis/analyses, thesis/theses
• Example: The criterion is clear. / The criteria are clear.
• Note: "Data" is traditionally plural (data are), but increasingly accepted as singular (data is) in informal contexts.

7. Agreement with Pronouns

7.1 Pronoun-Antecedent Agreement

• Pronouns must agree with their antecedents in number (singular/plural) and gender.
• Example: Each student must bring his or her laptop. (Singular pronoun for singular antecedent)
• Example: The students must bring their laptops. (Plural pronoun for plural antecedent)
• Trap Alert: Avoid mixing singular and plural. Incorrect: "Everyone should bring their book." Correct: "Everyone should bring his or her book" or "All students should bring their books."

8. Common Student Mistakes

8.1 Mistakes to Avoid

• Mistake 1: Matching the verb to the nearest noun instead of the actual subject. Example: "The list of items are complete." (Incorrect) → "The list of items is complete." (Correct)
• Mistake 2: Treating "each," "every," "everyone" as plural. Example: "Everyone are here." (Incorrect) → "Everyone is here." (Correct)
• Mistake 3: Using plural verbs with collective nouns when acting as one unit. Example: "The team are winning." (Usually incorrect in American English) → "The team is winning." (Correct)
• Mistake 4: Confusing "there is/are" constructions. Example: "There is three options." (Incorrect) → "There are three options." (Correct)
• Mistake 5: Forgetting that "neither...nor" and "either...or" match the verb to the closest subject. Example: "Neither the teacher nor the students is ready." (Incorrect) → "Neither the teacher nor the students are ready." (Correct)

Mastering subject-verb agreement requires practice in identifying the true subject, understanding pronoun types, and recognizing special constructions. Always locate the subject first, determine whether it is singular or plural, and then choose the verb form that matches. Pay special attention to sentences with intervening phrases, indefinite pronouns, and inverted structures. Consistent application of these rules will improve your grammatical accuracy and writing clarity significantly.