{"id":139,"date":"2026-02-24T22:09:42","date_gmt":"2026-02-24T17:09:42","guid":{"rendered":"https:\/\/grammarspell.com\/blog\/?p=139"},"modified":"2026-02-24T22:09:43","modified_gmt":"2026-02-24T17:09:43","slug":"act-grammar-rules","status":"publish","type":"post","link":"https:\/\/grammarspell.com\/blog\/act-grammar-rules\/","title":{"rendered":"ACT Grammar Rules: The Complete Guide to Master ACT English"},"content":{"rendered":"\n<p>If you want a higher ACT English score, you must master the core ACT <a href=\"https:\/\/grammarspell.com\/blog\/category\/grammar-rules\/\" target=\"_blank\" rel=\"noreferrer noopener\">grammar rules<\/a>. The good news? The ACT tests the same patterns repeatedly.<\/p>\n\n\n\n<p>This guide breaks down every major ACT English rule in a simple, strategic, and easy-to-scan format &#8211; plus exam-day shortcuts your competitors won\u2019t tell you.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-act-grammar-rules-matter\">Why ACT Grammar Rules Matter<\/h2>\n\n\n\n<p><strong>The ACT English section:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Contains 75 questions<\/li>\n\n\n\n<li>Must be completed in 45 minutes<\/li>\n\n\n\n<li>Tests grammar, punctuation, style, and rhetorical skills<\/li>\n\n\n\n<li>Repeats the same rule patterns year after year<\/li>\n<\/ul>\n\n\n\n<p>Once you understand the most tested rules, your score improves quickly.<\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#why-act-grammar-rules-matter\">Why ACT Grammar Rules Matter<\/a><\/li><li><a href=\"#most-tested-act-grammar-rules-priority-ranking\">Most Tested ACT Grammar Rules (Priority Ranking)<\/a><\/li><li><a href=\"#1-comma-rules-most-tested-on-act\">1. Comma Rules (Most Tested on ACT)<\/a><ul><li><a href=\"#use-commas\">Use commas:<\/a><\/li><li><a href=\"#do-not-use-commas\">Do NOT use commas:<\/a><\/li><li><a href=\"#act-shortcut\">ACT Shortcut<\/a><\/li><\/ul><\/li><li><a href=\"#2-semicolons-colons-dashes\">2. Semicolons, Colons &amp; Dashes<\/a><ul><li><a href=\"#semicolon-period\">Semicolon = Period<\/a><\/li><li><a href=\"#colon-rule\">Colon Rule<\/a><\/li><li><a href=\"#dashes\">Dashes<\/a><\/li><\/ul><\/li><li><a href=\"#3-subject-verb-agreement\">3. Subject-Verb Agreement<\/a><ul><li><a href=\"#watch-out-for-traps\">Watch Out for Traps<\/a><\/li><li><a href=\"#act-tip\">ACT Tip<\/a><\/li><\/ul><\/li><li><a href=\"#4-pronoun-agreement\">4. Pronoun Agreement<\/a><ul><li><a href=\"#common-errors\">Common Errors<\/a><\/li><li><a href=\"#quick-trick\">Quick Trick<\/a><\/li><\/ul><\/li><li><a href=\"#5-verb-tense-rules\">5. Verb Tense Rules<\/a><ul><li><a href=\"#keep-tense-consistent\">Keep tense consistent.<\/a><\/li><li><a href=\"#present-perfect\">Present Perfect<\/a><\/li><li><a href=\"#past-perfect\">Past Perfect<\/a><\/li><\/ul><\/li><li><a href=\"#6-parallel-structure\">6. Parallel Structure<\/a><ul><li><a href=\"#word-pairs\">Word Pairs<\/a><\/li><\/ul><\/li><li><a href=\"#7-modifiers-dangling-misplaced\">7. Modifiers (Dangling &amp; Misplaced)<\/a><\/li><li><a href=\"#8-apostrophes\">8. Apostrophes<\/a><\/li><li><a href=\"#9-diction-idioms\">9. Diction &amp; Idioms<\/a><\/li><li><a href=\"#restrictive-vs-nonrestrictive-clauses\">Restrictive vs. Nonrestrictive Clauses<\/a><\/li><li><a href=\"#act-english-strategy-you-wont-find-elsewhere\">ACT English Strategy You Won\u2019t Find Elsewhere<\/a><ul><li><a href=\"#shorter-is-usually-better\">Shorter Is Usually Better<\/a><\/li><li><a href=\"#eliminate-redundancy\">Eliminate Redundancy<\/a><\/li><li><a href=\"#read-the-full-sentence\">Read the Full Sentence<\/a><\/li><li><a href=\"#identify-the-question-type-first\">Identify the Question Type First<\/a><\/li><\/ul><\/li><li><a href=\"#mini-practice-quiz\">Mini Practice Quiz<\/a><\/li><li><a href=\"#final-exam-day-checklist\">Final Exam-Day Checklist<\/a><\/li><li><a href=\"#conclusion\">Conclusion:<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"most-tested-act-grammar-rules-priority-ranking\">Most Tested ACT Grammar Rules (Priority Ranking)<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/grammarspell.com\/blog\/wp-content\/uploads\/most-tested-act-grammar-rules-priority-ranking-1.webp\" alt=\"most tested act grammar rules (priority ranking)\" class=\"wp-image-161\" srcset=\"https:\/\/grammarspell.com\/blog\/wp-content\/uploads\/most-tested-act-grammar-rules-priority-ranking-1.webp 800w, https:\/\/grammarspell.com\/blog\/wp-content\/uploads\/most-tested-act-grammar-rules-priority-ranking-1-300x200.webp 300w, https:\/\/grammarspell.com\/blog\/wp-content\/uploads\/most-tested-act-grammar-rules-priority-ranking-1-768x512.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p><strong>May be you like it:<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/grammarspell.com\/blog\/words-that-rhyme-with-confusing\/\">Words That Rhyme With Confusing: Complete Guide<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/grammarspell.com\/blog\/words-often-confused-worksheet\/\">Words Often Confused Worksheet: Learn, Practice, and Master English<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/grammarspell.com\/blog\/writing-tips-first-person-pov-using-i-a-lot\/\">Writing Tips First Person POV Using \u201cI\u201d a Lot &#8211; Complete Guide<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-comma-rules-most-tested-on-act\">1. Comma Rules (Most Tested on ACT)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"use-commas\">Use commas:<\/h3>\n\n\n\n<p>Before FANBOYS joining two full sentences<br>(for, and, nor, but, or, yet, so)<br>London is old, but it has modern areas.<\/p>\n\n\n\n<p>After introductory clauses<br> Because it is old, London attracts tourists.<\/p>\n\n\n\n<p>Around non-essential information<br> London, which is very old, attracts tourists.<\/p>\n\n\n\n<p>Between items in a list<br> Museums, parks, and galleries<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"do-not-use-commas\">Do NOT use commas:<\/h3>\n\n\n\n<p>Between subject and verb<br> The city of London, is historic.<\/p>\n\n\n\n<p>Between two complete sentences (comma splice)<br> London is old, it is beautiful.<\/p>\n\n\n\n<p>Before or after \u201cthat\u201d<br> The book, that I read, was helpful.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"act-shortcut\"> ACT Shortcut<\/h3>\n\n\n\n<p>If you see:<br>Comma + pronoun (it, they, he, she)<br>\u2192 It is probably wrong.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-semicolons-colons-dashes\">2. Semicolons, Colons &amp; Dashes<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"semicolon-period\">Semicolon = Period<\/h3>\n\n\n\n<p>Use a semicolon between two complete sentences.<\/p>\n\n\n\n<p>London is old; it attracts tourists.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"colon-rule\">Colon Rule<\/h3>\n\n\n\n<p>A colon must follow a complete sentence.<\/p>\n\n\n\n<p> London has many attractions: museums and parks.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"dashes\">Dashes<\/h3>\n\n\n\n<p>Used like commas (non-essential info) or colons (lists).<\/p>\n\n\n\n<p> London-which is very old-attracts tourists.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-subject-verb-agreement\">3. Subject-Verb Agreement<\/h2>\n\n\n\n<p>Singular subject \u2192 singular verb<br>Plural subject \u2192 plural verb<\/p>\n\n\n\n<p> The city is large.<br> The cities are large.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"watch-out-for-traps\">Watch Out for Traps<\/h3>\n\n\n\n<p>Prepositional phrases confuse students:<\/p>\n\n\n\n<p> The list of items are long.<br> The list of items is long.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"act-tip\">ACT Tip<\/h3>\n\n\n\n<p>Ignore extra phrases and find the real subject.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-pronoun-agreement\">4. Pronoun Agreement<\/h2>\n\n\n\n<p>Pronouns must match the noun in number.<\/p>\n\n\n\n<p> Students must bring their pencils.<br> The student must bring his or her pencil.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"common-errors\">Common Errors<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>its vs. it\u2019s<\/li>\n\n\n\n<li>their vs. there vs. they\u2019re<\/li>\n\n\n\n<li>who vs. whom<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"quick-trick\">Quick Trick<\/h3>\n\n\n\n<p>Whom \u2192 after a preposition<br> To whom it may concern<\/p>\n\n\n\n<p>Who \u2192 before a verb<br> Who is coming?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"5-verb-tense-rules\">5. Verb Tense Rules<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"keep-tense-consistent\">Keep tense consistent.<\/h3>\n\n\n\n<p> She walked to school and eats lunch.<br> She walked to school and ate lunch.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"present-perfect\">Present Perfect<\/h3>\n\n\n\n<p>Use with \u201cfor\u201d or \u201csince.\u201d<\/p>\n\n\n\n<p> They have lived here for years.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"past-perfect\">Past Perfect<\/h3>\n\n\n\n<p>Use with \u201cby the time.\u201d<\/p>\n\n\n\n<p> By the time she arrived, the class had started.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"6-parallel-structure\">6. Parallel Structure<\/h2>\n\n\n\n<p>Keep lists in the same format.<\/p>\n\n\n\n<p> She likes running, to swim, and biking.<br> She likes running, swimming, and biking.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"word-pairs\">Word Pairs<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Either\u2026or<\/li>\n\n\n\n<li>Neither\u2026nor<\/li>\n\n\n\n<li>Not only\u2026but also<\/li>\n\n\n\n<li>More\u2026than<\/li>\n<\/ul>\n\n\n\n<p>Both sides must match.<\/p>\n\n\n\n<p><strong>May be you like it:<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/grammarspell.com\/blog\/tips-for-writing-lyrics\/\">Tips For Writing Lyrics: A Complete Step-by-Step Guide<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/grammarspell.com\/blog\/tips-for-writing-wedding-vows%E2%80%8B\/\">Tips for Writing Wedding Vows That Feel Real, Personal &amp; Unforgettable<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/grammarspell.com\/blog\/act-grammar-rules\/\"><a href=\"https:\/\/grammarspell.com\/blog\/words-from-confuse\/\">Words From Confuse &#8211; 40+ Anagrams You Can Make<\/a><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"7-modifiers-dangling-misplaced\">7. Modifiers (Dangling &amp; Misplaced)<\/h2>\n\n\n\n<p>Modifier must clearly describe the subject.<\/p>\n\n\n\n<p>Running down the street, the backpack fell.<br>Running down the street, she dropped her backpack.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"8-apostrophes\">8. Apostrophes<\/h2>\n\n\n\n<p>Singular possessive \u2192 add \u2019s<br>The dog\u2019s leash<\/p>\n\n\n\n<p>Plural possessive \u2192 s\u2019<br>The dogs\u2019 leashes<\/p>\n\n\n\n<p>No apostrophe = plural only<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"9-diction-idioms\">9. Diction &amp; Idioms<\/h2>\n\n\n\n<p>ACT tests correct word usage.<\/p>\n\n\n\n<p>Interested in<br>Capable of<br>Different from<\/p>\n\n\n\n<p>No grammar rule helps here &#8211; trust what sounds correct.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"restrictive-vs-nonrestrictive-clauses\"> Restrictive vs. Nonrestrictive Clauses<\/h2>\n\n\n\n<p>This is heavily tested and often misunderstood.<\/p>\n\n\n\n<p>Restrictive (essential) \u2192 no commas<br>The students who studied passed.<\/p>\n\n\n\n<p>Nonrestrictive (extra info) \u2192 commas<br>The students, who studied all night, passed.<\/p>\n\n\n\n<p>If removing the clause changes the meaning, do NOT use commas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"act-english-strategy-you-wont-find-elsewhere\">ACT English Strategy You Won\u2019t Find Elsewhere<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"shorter-is-usually-better\">Shorter Is Usually Better<\/h3>\n\n\n\n<p>If two answers mean the same thing \u2192 choose the shorter one.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"eliminate-redundancy\">Eliminate Redundancy<\/h3>\n\n\n\n<p>Large in size<br>Large<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"read-the-full-sentence\">Read the Full Sentence<\/h3>\n\n\n\n<p>Never answer based only on the underlined portion.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"identify-the-question-type-first\">Identify the Question Type First<\/h3>\n\n\n\n<p><strong>Ask yourself:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Is this punctuation?<\/li>\n\n\n\n<li>Agreement?<\/li>\n\n\n\n<li>Verb tense?<\/li>\n\n\n\n<li>Word choice?<\/li>\n<\/ul>\n\n\n\n<p>Then apply the correct rule.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"mini-practice-quiz\">Mini Practice Quiz<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>The group of students are studying for the exam.<br>A) NO CHANGE<br>B) is studying<br>C) were studying<br>D) have studied<\/li>\n<\/ol>\n\n\n\n<p><strong>Answer: B<\/strong><\/p>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>She enjoys reading, to swim, and biking.<br>A) NO CHANGE<br>B) swimming<br>C) swim<br>D) to swimming<\/li>\n<\/ol>\n\n\n\n<p><strong>Answer: B<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"final-exam-day-checklist\">Final Exam-Day Checklist<\/h2>\n\n\n\n<p><strong>Before submitting answers, check:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Does the verb match the subject?<\/li>\n\n\n\n<li>Are commas used correctly?<\/li>\n\n\n\n<li>Is tense consistent?<\/li>\n\n\n\n<li>Is the structure parallel?<\/li>\n\n\n\n<li>Is the sentence concise?<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">Conclusion:<\/h2>\n\n\n\n<p>Mastering ACT grammar rules is not about memorizing endless definitions &#8211; it is about understanding patterns, spotting common traps, and applying clear, logical rules under time pressure.<\/p>\n\n\n\n<p><strong>To recap, you should focus on:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Punctuation rules (commas, semicolons, colons, dashes)<\/li>\n\n\n\n<li>Subject\u2013verb agreement<\/li>\n\n\n\n<li>Pronoun clarity and agreement<\/li>\n\n\n\n<li>Modifier placement<\/li>\n\n\n\n<li>Parallel structure<\/li>\n\n\n\n<li>Sentence boundaries (fragments &amp; run-ons)<\/li>\n\n\n\n<li>Conciseness and redundancy elimination<\/li>\n\n\n\n<li>Transition words and logical flow<\/li>\n<\/ul>\n\n\n\n<p><strong>The ACT English section rewards students who:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Choose the shortest clear answer<\/li>\n\n\n\n<li>Eliminate redundancy<\/li>\n\n\n\n<li>Check verb tense consistency<\/li>\n\n\n\n<li>Ensure every pronoun has a clear noun<\/li>\n\n\n\n<li>Read the entire sentence for meaning<\/li>\n<\/ul>\n\n\n\n<p>Unlike many test guides that simply list rules, the real advantage comes from understanding why answers are correct, practicing strategically, and recognizing patterns the test repeats year after year.<\/p>\n\n\n\n<p>If you <a href=\"https:\/\/en.wikipedia.org\/wiki\/Wikipedia:Consistency\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">consistently <\/a>review high-frequency ACT grammar rules, practice with timed drills, and analyze your mistakes, your score will improve. Grammar on the ACT is predictable &#8211; and that means it\u2019s beatable.<\/p>\n\n\n\n<p>Stay focused, practice smart, and treat every question as a logic puzzle. With the right strategy, a higher ACT English score is absolutely within reach.<\/p>\n\n\n\n<p><strong>May be you like it:<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/grammarspell.com\/blog\/seo-agency-in-australia-uploadarticle\/\">SEO Agency in Australia UploadArticle: The Complete Guide to Choosing the Right Partner in 2026<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/grammarspell.com\/blog\/uploadarticle\/\">The Ultimate Guide to UploadArticle: Boost Your SEO &amp; Reach More Readers<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/grammarspell.com\/blog\/uploadarticle-relationship\/\">UploadArticle Relationship: The Complete Strategy to Get Published, Approved &amp; Ranked<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you want a higher ACT English score, you must master the core ACT grammar rules. The good news? The ACT tests the same patterns repeatedly. This guide breaks down every major ACT English rule in a simple, strategic, and easy-to-scan format &#8211; plus exam-day shortcuts your competitors won\u2019t tell you. Why ACT Grammar Rules [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":156,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-139","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-grammar-rules"],"_links":{"self":[{"href":"https:\/\/grammarspell.com\/blog\/wp-json\/wp\/v2\/posts\/139","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/grammarspell.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/grammarspell.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/grammarspell.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/grammarspell.com\/blog\/wp-json\/wp\/v2\/comments?post=139"}],"version-history":[{"count":9,"href":"https:\/\/grammarspell.com\/blog\/wp-json\/wp\/v2\/posts\/139\/revisions"}],"predecessor-version":[{"id":195,"href":"https:\/\/grammarspell.com\/blog\/wp-json\/wp\/v2\/posts\/139\/revisions\/195"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/grammarspell.com\/blog\/wp-json\/wp\/v2\/media\/156"}],"wp:attachment":[{"href":"https:\/\/grammarspell.com\/blog\/wp-json\/wp\/v2\/media?parent=139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/grammarspell.com\/blog\/wp-json\/wp\/v2\/categories?post=139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/grammarspell.com\/blog\/wp-json\/wp\/v2\/tags?post=139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}