Subject-Verb & Pronoun-Antecedent Agreement - 3rd Grade Writing

Section 1

Why Does Agreement Matter?

Have you ever heard someone say something that sounded a little "off"? Maybe they said "The dogs runs fast" instead of "The dogs run fast." It sounded weird, right? That is because the words did not agree with each other. When we talk about agreement in English, we mean that certain words in a sentence need to match. This has been a rule for a very, very long time!

Long, Long Ago

People first started speaking languages thousands of years ago. Even the very first languages had rules about making words match!

Old English

Hundreds of years ago, English was very different. But even then, the subject and verb of a sentence had to agree. The rules were even harder back then!

Grammar Books Appear

About 250 years ago, people started writing grammar books. These books helped everyone learn the rules of English, including agreement.

School Today

Now you are learning these same rules! When you use agreement, your writing is clear and easy to understand.

So why do we care? Because agreement helps people understand what you mean. When your words match, your sentences sound smooth. When they don't match, readers get confused. Let's learn how to make your subjects, verbs, and pronouns all get along!

Section 2

The Big Ideas

Before we dive in, let's learn some important words. A subject is who or what the sentence is about. A verb is the action word—what the subject does. A pronoun is a little word like he, she, it, or they that takes the place of a noun. An antecedent (say it like: an-tuh-SEE-dent) is the noun that the pronoun is replacing.

Subject

The subject is who or what does something. In "The cat sleeps," the cat is the subject.

Verb

The verb is the action word. In "The cat sleeps," the word sleeps is the verb.

Pronoun

A pronoun takes the place of a noun. Instead of "Sara laughed," you can say "She laughed."

Antecedent

The antecedent is the noun a pronoun replaces. In "Sara laughed. She was happy," Sara is the antecedent of she.

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Key Takeaway

Think of agreement like a pair of matching socks. Your subject and verb need to match, just like your socks should match each other. If you wear one red sock and one blue sock, something looks wrong! The same thing happens in a sentence when the subject and verb don't agree. They need to be a matching pair.

Section 3

See It! Subject-Verb Agreement

Let's look at a picture that shows how subject-verb agreement works. When the subject is singular (just one), the verb needs a special form. When the subject is plural (more than one), the verb changes too!

Here is a cool trick to remember: when the subject has an -s (like dogs), the verb usually does not end in -s (like run). When the subject does not have an -s (like dog), the verb usually does end in -s (like runs). They take turns with the -s!

Section 4

How Subject-Verb Agreement Works

Making your subject and verb agree is like following a recipe. Here are the simple steps you need to follow every time you write a sentence.

Rule 1

One subject → add -s to the verb

Example: The bird sings. The car goes fast.

Rule 2

More than one → no -s on the verb

Example: The birds sing. The cars go fast.

Rule 3

I → special verb forms (no -s)

Example: I run. I eat. I am happy.

Rule 4

You → no -s on the verb

Example: You run. You eat. You are happy.

The verb "to be" is a special verb. It changes a lot! With I, we say "am". With he, she, or it, we say "is". With you, we, or they, we say "are". Those are important to remember!

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Key Takeaway

Think of your subject and verb like a dance. When one person dances (singular), the music sounds one way (verb + s). When a group dances (plural), the music changes (verb without s). The dancers and the music always need to be in sync!

Section 5

Pronoun-Antecedent Agreement

Now let's talk about the second kind of agreement: pronoun-antecedent agreement. Remember, a pronoun is a word like he, she, it, they, him, or her. The antecedent is the noun the pronoun is replacing. They need to match!

Here is an easy way to check: after you write a pronoun, look back and find the noun it is replacing. Ask yourself: Is that noun a boy, a girl, a thing, or more than one? Then pick the pronoun that matches!

If the noun is…	Use this pronoun	Example
One boy or man	he / him / his	Tom lost his hat.
One girl or woman	she / her / hers	Lisa rode her bike.
One thing or animal	it / its	The tree lost its leaves.
More than one (any!)	they / them / their	The kids ate their lunch.

Section 6

Worked Example: Fix the Sentence!

Let's practice fixing a paragraph that has agreement mistakes. We will go step by step, just like a detective looking for clues!

Fix the Paragraph

1
The Paragraph with Mistakes

"The girls walks to the park. Sarah find a frog. He puts it in a jar. The boys wants to see it. He run over to Sarah."
2
Step 1 — Find each subject

The subjects are: The girls, Sarah, She (Sarah), The boys, and They (the boys).
3
Step 2 — Check: singular or plural?

"The girls" = plural (more than one). "Sarah" = singular (just one girl). "The boys" = plural.
4
Step 3 — Fix the verbs

"The girls walks" → Girls is plural, so: "The girls walk." ✓ "Sarah find" → Sarah is singular, so: "Sarah finds." ✓ "The boys wants" → Boys is plural, so: "The boys want." ✓
5
Step 4 — Fix the pronouns

"He puts it in a jar." → Sarah is a girl, so: "She puts it in a jar." ✓ "He run over to Sarah." → We are talking about the boys (plural), so: "They run over to Sarah." ✓
6
Step 5 — The Fixed Paragraph!

"The girls walk to the park. Sarah finds a frog. She puts it in a jar. The boys want to see it. They run over to Sarah." ✓

Section 7

Common Mistakes & How to Fix Them

Even great writers make mistakes sometimes! Here are the mistakes kids make most often, and how to fix them.

Common Mistake	Why It's Wrong	How to Fix It
"The cat play outside."	"Cat" is one → verb needs -s	"The cat plays outside."
"My friends likes pizza."	"Friends" is more than one → no -s on verb	"My friends like pizza."
"Jake forgot her lunch."	Jake is a boy → use "his"	"Jake forgot his lunch."
"The students got her books."	"Students" is plural → use "their"	"The students got their books."
"The puppy wagged their tail."	One puppy → use "its"	"The puppy wagged its tail."

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Key Takeaway

Before you turn in your writing, be a sentence detective! Read each sentence and ask two questions: (1) Does my verb match my subject? (2) Does my pronoun match the noun it is replacing? If you check these two things every time, your writing will be super clear.

Section 8

Going Further: Tricky Situations

Now that you know the basics, let's look at some tricky sentences that can fool even grown-ups! As you get older, you will see sentences that are harder to figure out. Here is a sneak peek.

Tricky Sentence	What You Learn Now (3rd Grade)	What You'll Learn Later
"The box of crayons is on the desk."	The subject is "box" (one box), so we use "is."	In 4th and 5th grade, you will learn about "prepositional phrases" that can trick you!
"Everyone has a pencil."	"Everyone" sounds like a lot of people, but it means each one person, so we use "has."	Words like "everyone," "nobody," and "each" are called "indefinite pronouns." You will study these more later.
"Sam and Mia are friends."	Two people together = plural. Use "are."	Later you will learn about "compound subjects" and when to use "and" vs. "or."

Don't worry about memorizing all of these right now! The most important thing is to master the basics: one subject gets a singular verb, and more-than-one subjects get a plural verb. When you have that down, the trickier stuff will be much easier later.

Section 9

Practice Problems

Time to show what you know! Try each problem, then click "Show Answer" to check your work. Good luck!

Question 1: Problem 1 — What Do You Know?

What does subject-verb agreement mean? Explain it in your own words.

Show answer

Subject-verb agreement means that the subject (who or what the sentence is about) and the verb (the action word) need to match. If the subject is one thing (singular), the verb takes one form. If the subject is more than one thing (plural), the verb takes a different form. For example, "The bird flies" (one bird) and "The birds fly" (many birds). Great job if you explained it like that!

Question 2: Problem 2 — Pick the Right Verb

Which is correct?
(A) The flowers grows in the garden.
(B) The flowers grow in the garden.

Show answer

The answer is (B) "The flowers grow in the garden." The subject is "flowers," which is plural (more than one flower). Plural subjects take a verb without the -s ending. So we say "grow," not "grows." Nice work!

Question 3: Problem 3 — Fix the Pronoun

Find the mistake and fix it: "Maria went to the store. He bought some apples."

Show answer

The mistake is the word "He." Maria is a girl, so the pronoun should be "She." The fixed sentence is: "Maria went to the store. She bought some apples." Remember, the pronoun must match the antecedent. Maria = girl = she. You're doing great!

Question 4: Problem 4 — Fix the Whole Paragraph

This paragraph has three mistakes. Can you find and fix all of them?

"My brothers plays soccer every day. Jake score a goal yesterday. He teammates cheered for them."

Show answer

Here are the three mistakes and fixes: Mistake 1: "My brothers plays" → Brothers is plural. Fix: "My brothers play soccer every day." Mistake 2: "Jake score" → Jake is one person (singular). Fix: "Jake scored a goal yesterday." Mistake 3: "He teammates cheered for them." → Jake is one boy, so his teammates cheered for him. Fix: "His teammates cheered for him." Amazing detective work if you found all three!

Question 5: Problem 5 — Think About It

Write two sentences about your favorite animal. In the first sentence, write about one animal. In the second sentence, write about more than one. Make sure your subjects, verbs, and pronouns all agree! Then check your work by asking: "Does the verb match? Does the pronoun match?"

Show answer

There is no single right answer here — it depends on your favorite animal! Here is one example: Singular: "The dolphin swims in the ocean. It jumps out of the water." Plural: "The dolphins swim in the ocean. They jump out of the water." Check yours: Did you use a verb with -s for one animal? Did you use a verb without -s for many animals? Did your pronoun (it/they/he/she) match? If yes, you nailed it! 🎉

Summary

What We Learned

Summary

Today we learned about two important rules that make our writing clear and easy to read. The first rule is subject-verb agreement: when the subject is singular (just one), the verb usually ends in -s (like "runs," "eats," "plays"). When the subject is plural (more than one), the verb does not end in -s (like "run," "eat," "play"). The second rule is pronoun-antecedent agreement: when we use a pronoun like he, she, it, or they, it must match the noun it is replacing in number (one or many) and type (boy, girl, or thing).

Remember our matching-socks trick: the subject and verb take turns with the -s! And always check that your pronouns point back to the right noun. When your sentences have good agreement, your readers will understand exactly what you mean. Keep practicing, and soon this will feel as easy as tying your shoes! 🧦✨