Third Grade English: Grammar: Parts of Speech - Subject-Verb and Pronoun-Antecedent Agreement
Agreement is the grammatical harmony that exists when words in a sentence match each other in number and person, creating sentences that sound smooth, natural, and logical. Just as two musicians in a band must play in the same key and rhythm to produce beautiful harmony, a subject must agree with its verb in number, and a pronoun must agree with its antecedent in both number and gender. In this chapter, you will master the golden rule of subject-verb agreement, discover the tricky "Inverted S Rule," learn how to handle compound subjects joined by "and," and ensure your pronouns match their antecedents perfectly.
The Principle of Agreement: What Does It Mean to Match?
In grammar, words must agree in "number"—meaning whether they are singular (one) or plural (more than one).
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| THE HARMONY OF AGREEMENT |
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| SINGULAR SUBJECT =======> SINGULAR VERB |
| (One dog) (barks) |
| "The dog barks at the mail truck." |
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| PLURAL SUBJECT =======> PLURAL VERB |
| (Two dogs) (bark) |
| "The dogs bark at the mail truck." |
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The "Inverted S Rule": The Secret of Present Tense Verbs
Here is a quirky truth about the English language that trips up many students:
- Plural NOUNS usually end in "s" (one cat -> two cats).
- Singular VERBS usually end in "s" (he walks, she runs, it leaps)!
- They are complete opposites! If the noun has an "s", the verb does NOT. If the noun does NOT have an "s", the verb DOES!
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| THE "INVERTED S" BALANCE |
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| Singular: The girl [NO S] -----> skates [HAS S] |
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| Plural : The girls [HAS S] -----> skate [NO S] |
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| Only ONE side gets the "S" in simple present tense! |
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Subject-Verb Agreement: The Core Rules
Let us explore how subject-verb agreement works across different sentence types.
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| # | SUBJECT TYPE | VERB TYPE | EXAMPLE |
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| 1 | Singular Noun | Singular (-s form) | The train arrives. |
| 2 | Plural Noun | Plural (base form) | The trains arrive. |
| 3 | Singular Pronoun | Singular (-s form) | She sings loudly. |
| | (He, She, It) | | It shines brightly. |
| 4 | Plural Pronoun | Plural (base form) | They sing loudly. |
| | (We, They) | | We cheer together. |
| 5 | Pronouns "I" & "You" | Special Base Form | I sing. You sing. |
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The Tricky "To Be" and "To Have" Verbs
The irregular verbs be and have change their forms completely between singular and plural:
- Forms of "Be":
- Present: I am | He/She/It is | We/They/You are
- Past: He/She/It was | We/They/You were
- Forms of "Have":
- Present: He/She/It has | I/We/They/You have
Compound Subjects Joined by "And"
When two or more subjects are connected by the coordinating conjunction "and", they combine into a plural team. Because 1 + 1 = 2, compound subjects joined by "and" always take a plural verb!
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| COMPOUND SUBJECT ADDITION |
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| Leo (1) + Marcus (1) = 2 (Plural Subject) |
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| WRONG : "Leo and Marcus walks to school." |
| CORRECT : "Leo and Marcus walk to school." |
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| WRONG : "The dog and the cat is sleeping." |
| CORRECT : "The dog and the cat ARE sleeping." |
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Watch Out for Interrupter Phrases!
Sometimes, a group of words sneaks in between the subject and the verb, trying to trick your brain:
- Sentence: "The captain [of the soccer players] kicks the ball."
- Notice: "players" is plural, but "players" is NOT the subject! The subject is the singular noun "captain."
- Ignore the prepositional phrase inside the brackets: "The captain ... kicks."
Pronoun-Antecedent Agreement
Just as subjects and verbs must agree, a pronoun must agree in number and gender with the noun it replaces (its antecedent).
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| PRONOUN-ANTECEDENT MATCHING |
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| Singular Female Antecedent -> she, her, hers |
| "Clara forgot her notebook in the science lab." |
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| Singular Male Antecedent -> he, him, his |
| "Julian tied his running sneakers tightly." |
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| Singular Thing Antecedent -> it, its |
| "The tree dropped its golden leaves onto the grass." |
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| Plural Antecedent (People or Things) -> they, them, their |
| "The students packed their backpacks before the bell." |
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Common Pronoun-Antecedent Mistakes
- WRONG: "Every student must bring their pencil." (In formal traditional grammar, "student" is singular, so pairing with plural "their" was considered mismatched. In third grade, write: "All students must bring their pencils" to make both clearly plural!).
- WRONG: "The dog licked their paw." (Singular dog requires singular pronoun: "The dog licked its paw").
Practice Exercises and Review
Test your agreement expertise on these practice sentences.
Exercise 1: Subject-Verb Match
Select the correct verb form in parentheses.
1. The flock of wild geese _ (flies / fly) south for the winter.
2. Elena and Jordan _ (builds / build) a model bridge out of craft sticks.
3. The heavy wooden door _ (creaks / creak) in the wind.
4. They _ (was / were) thrilled to visit the space museum.
Exercise 2: Pronoun-Antecedent Match
Fill in the blank with the pronoun that agrees with the underlined antecedent.
1. The ship dropped _ anchor in the sheltered bay.
2. Lucas searched through the drawer until _ found the flashlight.
3. The owls spread _ wings and launched into the night sky.
Answer Key and Explanations
- Exercise 1:
- flies (Subject is the singular collective noun "flock").
- build (Compound subject "Elena and Jordan" is plural; 1 + 1 = 2).
- creaks (Singular noun "door" takes singular verb with "s").
- were (Plural subject pronoun "They" takes plural past verb "were").
- Exercise 2:
- its (Singular neuter noun "ship" agrees with "its").
- he (Singular masculine noun "Lucas" agrees with "he").
- their (Plural noun "owls" agrees with "their").