What does the ACT English section test?
The ACT English section has 75 questions in 45 minutes (36 seconds per question), testing grammar, punctuation, and rhetorical writing skills across five prose passages. Questions fall into two categories: Usage/Mechanics (about 53 questions, covering grammar, punctuation, and sentence structure) and Rhetorical Skills (about 22 questions, covering strategy, organization, and style). The five grammar rules that cover the majority of Usage/Mechanics questions are comma placement, subject-verb agreement, pronoun consistency, apostrophe use, and run-on sentences. Mastering these five rules addresses approximately 80% of grammar questions on every test.
The ACT English section is the fastest-paced timed section on the entire test. Thirty-six seconds per question includes reading the relevant portion of the passage, understanding the grammar or rhetorical issue, evaluating all options, and selecting the answer. Students who have not developed true automaticity with the major grammar rules — meaning they apply them without conscious deliberation — will consistently run out of time.
This guide covers every component of the ACT English section: the passage structure, the two question categories, the specific grammar rules that dominate the test, the "No Change" option strategy, and a pacing system that manages 36 seconds per question reliably.
Section Overview
| Feature | Specification |
|---|---|
| Total questions | 75 |
| Total time | 45 minutes |
| Time per question (average) | 36 seconds |
| Number of passages | 5 |
| Questions per passage | 15 |
| Score scale | 1-36 |
| Grammar-style questions | ~53 (Usage/Mechanics) |
| Rhetorical questions | ~22 (Rhetorical Skills) |
Each passage is approximately 400-450 words. Portions of the passage are underlined and numbered. Each question corresponds to a specific underlined portion and asks either for the best revision of that portion or for a rhetorical judgment about the passage as a whole.
The Two Question Categories
Usage/Mechanics (~53 questions)
Usage/Mechanics questions test grammar, punctuation, and sentence structure. Subcategories:
| Subcategory | Approximate Frequency |
|---|---|
| Punctuation | 10-12 questions |
| Basic Grammar and Usage | 12-15 questions |
| Sentence Structure | 12-15 questions |
Punctuation questions test commas, apostrophes, colons, semicolons, dashes, and (rarely) periods. Comma questions are the most frequent single question type on ACT English.
Basic Grammar and Usage questions test subject-verb agreement, pronoun case and agreement, verb tense consistency, adjective vs. adverb usage, and idiom usage.
Sentence Structure questions test run-on sentences, sentence fragments, misplaced modifiers, parallel structure, and transitions between clauses.
Rhetorical Skills (~22 questions)
Rhetorical Skills questions test writing strategy, organization, and style. Subcategories:
| Subcategory | Approximate Frequency |
|---|---|
| Strategy | 8-10 questions |
| Organization | 8-10 questions |
| Style | 4-6 questions |
Strategy questions ask whether adding or deleting a specific sentence serves the passage's purpose, or which alternative best achieves a stated goal.
Organization questions ask about the most logical sequence of sentences or paragraphs.
Style questions ask which version of a phrase is most appropriate for the passage's tone, or which version avoids wordiness and redundancy.
The 5 Grammar Rules That Cover 80% of Questions
Rule 1: Comma Usage
Commas are the most-tested punctuation mark on ACT English. The four most commonly tested comma rules:
Commas with nonessential phrases: A phrase that can be removed without changing the sentence's core meaning is nonessential. Nonessential phrases are surrounded by commas. "My professor, who teaches in the physics department, won an award." Remove "who teaches in the physics department" and the sentence still works: "My professor won an award." The phrase is nonessential — commas required.
No comma between subject and verb: "The research conducted over three years, suggests a correlation" is wrong. No comma separates a subject from its main verb unless a parenthetical is being closed.
Commas in lists: Items in a series are separated by commas. The ACT specifically tests the serial comma (comma before "and" in the final item) — both with and without the serial comma are accepted, but choices must be internally consistent.
No comma between two parts of a compound predicate: "She studied for the exam, and passed" is wrong if "studied" and "passed" share the same subject. "She studied and passed" needs no comma. (If there are two full independent clauses: "She studied for the exam, and she passed" — comma is correct.)
Rule 2: Subject-Verb Agreement
The verb must agree in number with the subject, not with the nearest noun.
The most common trap: an intervening prepositional phrase separates subject and verb. "The collection of rare manuscripts were donated to the university" — subject is "collection" (singular), not "manuscripts" (plural). Correct: "was donated."
Inverted sentences: "There are many reasons" vs. "There is many reasons." The subject follows the verb in "there" constructions. "Reasons" is the subject — "are" is correct.
Collective nouns: In American English, collective nouns (committee, team, jury, audience) take singular verbs: "The committee has reached a decision."
Rule 3: Pronoun Consistency
Pronoun errors on ACT English take three forms:
Pronoun-antecedent agreement: A pronoun must agree in number with its antecedent. "Each student should bring their textbook" — "each student" is singular, so "his or her textbook" is formally correct. The ACT still tests this distinction.
Pronoun case: I/me, he/him, she/her, they/them, who/whom. The nominative case (I, he, she, they, who) is used for subjects. The objective case (me, him, her, them, whom) is used for objects. "Give the award to whoever earns it" vs. "Give the award to whomever the committee selects" — "whoever" is the subject of "earns"; "whomever" is the object of "selects."
Unclear pronoun reference: A pronoun must have a clear, unambiguous antecedent. "When Maria told her mother she was right, she meant that she had been right about the diagnosis" — the second "she" is ambiguous. The ACT tests whether students can identify these ambiguities and choose clear alternatives.
Rule 4: Apostrophes
Apostrophe questions appear on every ACT. The three rules:
Possession with singular nouns: Add 's. "The student's notebook" = the notebook of one student.
Possession with plural nouns already ending in -s: Add only an apostrophe. "The students' notebooks" = the notebooks of multiple students.
Contractions: Apostrophes mark omitted letters. it's = it is. they're = they are. you're = you are. "Its," "their," "your" without apostrophes are possessive pronouns, not contractions.
The most commonly tested distinction: "its" (possessive) vs. "it's" (it is). "The committee gave its recommendation" (possessive). "It's time to begin" (it is).
Rule 5: Run-On Sentences and Sentence Boundaries
A run-on sentence joins two independent clauses without proper punctuation. The ACT tests four ways to correctly join independent clauses:
- Period: "The experiment failed. The researchers began again."
- Semicolon: "The experiment failed; the researchers began again."
- Comma + coordinating conjunction (FANBOYS): "The experiment failed, so the researchers began again."
- Subordinating conjunction: "Because the experiment failed, the researchers began again." (This makes one clause dependent.)
A comma alone between two independent clauses (comma splice) is always wrong on the ACT.
Fragment recognition: A sentence must contain both a subject and a verb and express a complete thought. "The researchers who designed the experiment over three years" is a fragment — it has a subject but no main verb.
Rhetorical Skills: Strategy Questions in Depth
Strategy questions are worth spending extra time on relative to grammar questions, because they require reading more of the passage for context.
"Should the writer add this sentence?" questions require evaluating whether the proposed addition serves the essay's stated purpose or the paragraph's function. Read the question carefully — it typically specifies what the sentence should accomplish (e.g., "to introduce the topic of the next paragraph" or "to provide a relevant example"). Then evaluate whether the proposed sentence does that.
"Should the writer delete this sentence?" questions work the same way in reverse. If the question asks whether the sentence should be deleted because it's redundant, check whether the sentence restates information already in the passage.
"Which alternative best achieves the writer's goal?" questions present a specific goal (e.g., "to emphasize the contrast between the two approaches") and four alternatives. These are judgment questions, not rule-application questions. Read for the intended effect, not correctness.
"Strategy questions are the most mishandled question type in ACT English. Students apply grammar instincts to rhetorical questions and end up evaluating grammatical correctness when the real question is about rhetorical purpose. The key is to read the question stem carefully and treat it as a writing instruction, not a grammar check." — Tim Averill, ACT curriculum director and author, ACT Prep Black Book, 2024.
Using the "No Change" Option Intelligently
Every ACT English question includes "NO CHANGE" as option A (occasionally option F). Students who understand the test's question design can use this option strategically.
The "No Change" frequency reality: Approximately 20-25% of ACT English answers are "No Change." This means the underlined portion is already correct approximately 1 in 4-5 times. Students who habitually avoid "No Change" will miss these questions systematically.
When to choose "No Change": When the underlined portion follows all grammar rules and is clearer, more concise, or more appropriate than any alternative. Do not change what isn't broken.
The conciseness principle: ACT English specifically tests the ability to choose the most concise grammatically correct option. If two options are both grammatically correct, the shorter one is usually correct. "Due to the fact that" versus "because" — choose "because."
Pacing: 36 Seconds Per Question
Thirty-six seconds is the average needed per question. In practice, grammar questions should take 20-30 seconds each, and rhetorical questions should take 40-60 seconds each. This unequal distribution allows the section to be completed within time.
Passage reading strategy: Do not read the entire passage before looking at questions. Read the passage around each underlined portion — typically the sentence containing the underlined portion, plus the sentence before it (for context). For rhetorical questions asking about the essay's overall purpose, skim the full passage in 30-45 seconds first.
| Question Type | Target Time |
|---|---|
| Grammar (punctuation, agreement) | 20-30 seconds |
| Sentence structure | 25-35 seconds |
| Strategy and organization | 40-60 seconds |
| Style and conciseness | 25-35 seconds |
The marking strategy: If a question requires more than 45 seconds, mark it, answer with your best guess, and return later. Do not leave the section with unanswered questions — guess if necessary, as there is no wrong-answer penalty.
"ACT English time pressure is real and often underestimated. Students who complete 65 questions accurately score higher than students who complete 55 questions perfectly and run out of time on the remaining 20. Accuracy matters, but completeness is the prerequisite." — Jed Applerouth, founder of Applerouth Tutoring Services, educator testimony to ACT Advisory Panel, 2022.
The Conciseness Principle: One of ACT English's Most Consistent Rules
One of the most reliable test-taking principles for ACT English is this: when two answer choices are both grammatically correct, the more concise one is almost always right.
This principle reflects a core value in academic writing: clear, direct expression is better than wordy, redundant expression. ACT English tests this principle explicitly through questions that ask which option avoids unnecessary wordiness.
Wordy patterns to recognize:
- "Due to the fact that" → use "because"
- "In spite of the fact that" → use "although"
- "At this point in time" → use "now"
- "For the purpose of" → use "to"
- "In the event that" → use "if"
- "It is important to note that" → delete entirely
- Redundant pairs: "past history," "future plans," "final conclusion," "unexpected surprise" — one word in each pair is redundant
The "OMIT the underlined portion" option: Some ACT English questions offer "OMIT the underlined portion" as choice F. This option is correct more often than students expect — approximately 1 in 6 times it appears. If the underlined portion adds no new information and its removal doesn't break the sentence's grammar, OMIT is usually correct.
Organization Questions: Sentence and Paragraph Sequencing
Organization questions ask students to place a sentence in the most logical location within a paragraph, or to identify the most logical sequence for a group of sentences. These questions require reading the entire relevant paragraph (not just the underlined portion).
Strategy for sentence placement: Read the sentence being placed. Identify whether it introduces a topic, provides evidence, offers an example, or draws a conclusion. Then find the location in the paragraph where that logical function fits — introductory sentences come first, evidence follows claims, examples follow general statements, conclusions come last.
Strategy for sentence sequencing: Look for logical connectives — transitional words that indicate sequence (first, then, finally), causation (because, therefore), or contrast (however, but). These words anchor sentences to their correct positions. The sentence containing "therefore" must follow the sentence that contains the cause. The sentence containing "however" must follow the sentence it contrasts with.
"Organization questions are the most reliably solved Rhetorical Skills question type for students who read for logical structure rather than content. The key is not to think 'what does this sentence say?' but rather 'what logical function does it perform in this argument?'" — Linda Flower, Problem-Solving Strategies for Writing in College and Community. Harcourt Brace, 1998.
Style Questions: Tone and Appropriateness
Style questions typically ask which of four options maintains the essay's existing tone (formal or informal), avoids cliches, or expresses an idea most precisely. These are the most subjective questions on ACT English, but they follow predictable patterns.
Match the passage's register: If the essay is written in formal academic language, informal colloquialisms are wrong. If the essay is written in a casual narrative voice, overly formal language is wrong. Read the surrounding paragraph before answering style questions.
Avoid cliches: ACT style questions often include a cliche among the wrong answers — phrases like "a diamond in the rough," "the tip of the iceberg," or "at the end of the day." These are almost always wrong. Fresh, specific language is preferred over figurative cliches.
Precise over vague: When one answer choice is specific ("the study examined 247 undergraduate students at four Midwest universities") and another is vague ("the study examined many students"), specific is preferred unless vagueness is contextually appropriate.
References
ACT, Inc. ACT English Test Content Areas. 2024. https://www.act.org/content/act/en/products-and-services/the-act/test-preparation/description-of-english-test.html
ACT, Inc. The Official ACT Prep Guide: 2024-2025. Wiley, 2024.
ACT, Inc. Preparing for the ACT 2024-25. Free preparation booklet. https://www.act.org/content/act/en/products-and-services/the-act/test-preparation/free-act-test-prep.html
Averill, Tim, and Mike Barrett. ACT Prep Black Book: The Most Effective ACT Strategies Ever Published. 3rd ed. Black Book Publications, 2024.
Strunk, William, and E.B. White. The Elements of Style. 4th ed. Longman, 2000.
Weaver, Constance. Grammar to Enrich and Enhance Writing. Heinemann, 2008.
Kolln, Martha, and Loretta Gray. Rhetorical Grammar: Grammatical Choices, Rhetorical Effects. 8th ed. Pearson, 2017.
National Council of Teachers of English. "Resolution on Grammar Exercises to Teach Speaking and Writing." NCTE, 1985. https://ncte.org/statement/grammarexercises/