Identify Usage Errors — Identify incorrect subject-verb and...

SECTION 1

Why Grammar Rules Matter

Have you ever read a sentence that just felt "off"? Maybe someone wrote "The team are winning" or "Him and me went to the store." These sentences have usage errors — mistakes in how words are matched together. English grammar rules have developed over hundreds of years to help us communicate clearly.

The rules we follow today come from a long history. People have always wanted language to be clear and understood by everyone. Let's look at how grammar rules grew over time.

1762

First Major English Grammar Book

Robert Lowth published one of the first big grammar guides. It set many rules about subjects and verbs that we still use today.

1800s

Grammar Taught in Schools

Schools across America began teaching formal grammar. Students practiced matching subjects with verbs and using pronouns correctly.

1950s

Standardized Testing Begins

Tests like the HSPT started asking students to find grammar mistakes. Subject-verb agreement and pronoun usage became key skills to master.

Today

Grammar in the Digital Age

Spell-checkers catch some errors, but they miss many tricky usage mistakes. Knowing the rules yourself is still the best way to write — and to ace tests!

On the HSPT Language Skills section, you will read sentences and decide if they contain errors. The two biggest categories of mistakes are subject-verb agreement and pronoun usage. So how do you spot these errors quickly and confidently? Let's find out.

SECTION 2

Core Principles & Definitions

Before we can find errors, we need to understand the key ideas. A subject is the person, place, or thing doing the action. A verb is the action word. A pronoun is a word that takes the place of a noun (like he, she, they, it, him, her). Here are the four big ideas you need.

Subject-Verb Agreement

A singular subject needs a singular verb. A plural subject needs a plural verb. Example: She runs (singular) vs. They run (plural).

Pronoun-Antecedent Agreement

A pronoun must match the noun it replaces (its antecedent) in number and gender. Example: The dog wagged its tail (not their tail).

Pronoun Case

Use subject pronouns (I, he, she, we, they) for subjects and object pronouns (me, him, her, us, them) for objects. Example: She and I went (not Her and me).

Tricky Subjects

Some subjects are tricky. Words like everyone, nobody, each are singular even though they feel plural. Phrases between the subject and verb can trick you too.

✦ KEY TAKEAWAY

Think of subjects and verbs like a lock and key. A singular subject is a small lock that needs a small key (singular verb). A plural subject is a big lock that needs a big key (plural verb). If the key doesn't fit the lock, the sentence is broken!

SECTION 3

Seeing Subject-Verb Agreement

The diagram below shows how to connect a subject to its verb, even when extra words sit between them. The key is to find the true subject and ignore the distracting phrases in between.

Notice how the prepositional phrase "of chocolates" sits between the true subject "box" and the verb "was." The noun closest to the verb is "chocolates" (plural), which can trick you into choosing a plural verb. Always find the true subject!

SECTION 4

How Subject-Verb Agreement Works

The Basic Rule

Here is the main rule: a singular subject takes a singular verb, and a plural subject takes a plural verb. This sounds simple, but test-makers use several tricks to make it harder.

Trick #1: Words Between Subject and Verb

Prepositional phrases (groups of words starting with of, with, in, for, along with, together with) do NOT change the subject. Cross them out mentally. For example: "The captain of the teams leads the practice." The subject is captain (singular), not teams.

Trick #2: Indefinite Pronouns

Words like everyone, everybody, each, either, neither, nobody, anyone, somebody are always singular. They need singular verbs. "Everyone has a pencil" is correct, not "Everyone have a pencil."

Trick #3: Compound Subjects

When two subjects are joined by and, they are usually plural: "Sam and Alex are ready." But when two subjects are joined by or or nor, the verb agrees with the subject closest to it: "Neither the coach nor the players were upset."

Common subject-verb agreement situations

Situation	Example	Subject Number
Simple singular subject	The dog runs.	Singular
Simple plural subject	The dogs run.	Plural
Subject + prepositional phrase	The bag of apples is heavy.	Singular (bag)
Indefinite pronoun	Each of the students has a book.	Singular (each)
Compound subject with "and"	Tom and Jerry are friends.	Plural
Compound subject with "or"	The teacher or the students decide.	Closest noun (students = plural)

SECTION 5

Pronoun Usage Errors

Pronoun errors are the other big category on the HSPT. There are two main kinds: pronoun case errors (using the wrong form) and pronoun-antecedent agreement errors (using a pronoun that doesn't match the noun it replaces).

This diagram organizes the two types of pronouns. Subject pronouns (in cyan) do the action, while object pronouns (in pink) receive the action. The yellow box shows a quick trick: remove the other person from the sentence to hear which pronoun sounds right.

⚠️ Watch Out!

On the HSPT, sentences with two people are the most common pronoun traps. You'll see choices like "Me and him went" or "between she and I." Always try the "remove the other person" trick to check!

SECTION 6

Worked Example: Spotting Errors Step by Step

Let's walk through a sample HSPT-style question together. You'll see how to use the strategies we've learned to find the error quickly.

Find the Error

Step 1 — Read the SentenceRead the sentence carefully: "Each of the students in the advanced classes have completed their project on time."

Step 2 — Find the SubjectCross out prepositional phrases to find the true subject. "of the students" and "in the advanced classes" are prepositional phrases. The true subject is "Each."

Subject = Each (singular indefinite pronoun)

Step 3 — Check Subject-Verb Agreement"Each" is singular, so it needs a singular verb. The sentence uses "have" which is plural. This is the first error! It should be "has."

Error #1: "have" should be "has"

Step 4 — Check Pronoun AgreementThe sentence says "their project." The pronoun "their" is plural, but it refers back to "Each," which is singular. This is a pronoun-antecedent agreement error. It should be "his or her project."

Error #2: "their" should be "his or her"

Step 5 — Write the Corrected SentenceThe corrected sentence reads: "Each of the students in the advanced classes has completed his or her project on time."

Both errors fixed! ✓

SECTION 7

Common Traps & How to Avoid Them

Test writers are clever. They set traps that look correct at first glance. Here are the most common traps you'll see on the HSPT, along with tips for avoiding them.

Top 5 HSPT usage error traps

Trap	Why It's Tricky	How to Beat It
Prepositional phrase between subject and verb	The noun inside the phrase is close to the verb, so it sounds like the subject.	Cross out all prepositional phrases first, then match subject to verb.
Indefinite pronouns (everyone, each, nobody)	They refer to groups of people, so they feel plural.	Memorize: these are ALWAYS singular.
Compound subjects with "or/nor"	Two subjects seem to make a plural, but "or/nor" separates them.	The verb agrees with the subject closest to it.
Pronoun case with two people	"Me and her" sounds casual and familiar.	Remove the other person. "Me went" sounds wrong → use "I."
"Between you and I"	People overcorrect because they think "I" is always more proper.	After prepositions (between, for, to), always use object pronouns: "between you and me."

✦ KEY TAKEAWAY

Think of finding usage errors like being a detective. You have two main clues to check: (1) Does the verb match the subject? (2) Does the pronoun match the noun it replaces, and is it in the right form? If either clue doesn't check out, you've found the error!

SECTION 8

Connecting to Harder Grammar Concepts

Once you master subject-verb agreement and pronoun usage, you'll be ready for more advanced grammar skills. The table below shows how what you're learning now connects to harder concepts you'll see in high school.

From HSPT basics to high school grammar

What You Learn Now	What Comes Next
Subject-verb agreement with simple sentences	Agreement in complex sentences with multiple clauses
Pronoun case (I vs. me)	Who vs. whom; reflexive pronouns (myself, themselves)
Pronoun-antecedent agreement	Unclear pronoun reference and ambiguous antecedents
Identifying errors in given sentences	Revising and improving sentences for style and clarity

These harder topics build directly on what you're learning here. If you can spot a subject-verb error now, figuring out who vs. whom later will feel like a natural next step. Mastering the basics gives you a strong foundation for everything that follows.

SECTION 9

Practice Problems

Now it's your turn! Read each sentence and find the error. Then check the answer to see if you got it right. These questions get harder as you go.

PROBLEM 1 — CONCEPTUAL

Which sentence is correct? (A) The dogs in the park runs fast. (B) The dogs in the park run fast.

PROBLEM 2 — BASIC

Find the error: "Nobody in my classes have finished the homework yet."

PROBLEM 3 — INTERMEDIATE

Find the error: "The coach told him and I to run three extra laps after practice."

PROBLEM 4 — APPLIED

Find all errors: "Either the principal or the teachers gives their approval before a field trip are scheduled."

PROBLEM 5 — CRITICAL THINKING

Read carefully: "Each of the girls on the three championship teams have earned their spot, and the committee have decided to honor them and she at a special banquet." Identify every usage error and explain why each is wrong.

SUMMARY

Summary & Review

To ace usage error questions on the HSPT, you need two main skills. First, check subject-verb agreement by finding the true subject (ignore prepositional phrases!), determining if it is singular or plural, and making sure the verb matches. Remember that indefinite pronouns like everyone, each, nobody are always singular, and compound subjects with "or/nor" match the verb to the closest subject.

Second, check pronoun usage in two ways: make sure the pronoun case is correct (subject pronouns like I, he, she for subjects; object pronouns like me, him, her for objects), and make sure the pronoun-antecedent agreement is correct (singular nouns need singular pronouns). Use the "remove the other person" trick whenever you see two people in a sentence. With practice, spotting these errors will become second nature!