HI7607{"id":7606,"date":"2026-09-01T07:14:06","date_gmt":"2026-09-01T07:14:06","guid":{"rendered":"https:\/\/www.trinka.ai\/blog\/?p=7606"},"modified":"2026-09-01T07:14:06","modified_gmt":"2026-09-01T07:14:06","slug":"academic-grammar-mistakes-that-can-weaken-research-writing","status":"publish","type":"post","link":"https:\/\/www.trinka.ai\/blog\/academic-grammar-mistakes-that-can-weaken-research-writing\/","title":{"rendered":"Academic Grammar Mistakes That Can Weaken Research Writing"},"content":{"rendered":"<p class=\"isSelectedEnd\">Research writing needs to communicate complex ideas clearly. A study may have strong methods and meaningful findings, but unclear sentences can make the research harder to follow. Grammar helps establish clear relationships between ideas, actions, results, and conclusions. Recognizing <strong>academic grammar mistakes<\/strong> can therefore improve the clarity and precision of research writing.<\/p>\n<p>These mistakes are not always obvious. Errors with verb tense, subject-verb agreement, articles, pronouns, modifiers, and sentence structure can affect clarity, especially in long, information-heavy sentences. Learning to identify these issues can make editing a research paper, thesis, or journal manuscript more effective. <a href=\"https:\/\/www.trinka.ai\/grammar-checker\"><strong>Trinka Grammar Checker<\/strong> <\/a>can provide an additional review by identifying grammar and language issues in academic and technical writing.<\/p>\n<ol>\n<li>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_50 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\" role=\"button\"><label for=\"item-6a96974e66e30\" aria-hidden=\"true\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;direction:ltr;\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input  type=\"checkbox\" id=\"item-6a96974e66e30\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.trinka.ai\/blog\/academic-grammar-mistakes-that-can-weaken-research-writing\/#Subject-Verb_Agreement_Errors\" title=\" Subject-Verb Agreement Errors\"> Subject-Verb Agreement Errors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.trinka.ai\/blog\/academic-grammar-mistakes-that-can-weaken-research-writing\/#Inconsistent_Verb_Tenses\" title=\" Inconsistent Verb Tenses\"> Inconsistent Verb Tenses<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.trinka.ai\/blog\/academic-grammar-mistakes-that-can-weaken-research-writing\/#Problems_With_Articles\" title=\" Problems With Articles\"> Problems With Articles<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.trinka.ai\/blog\/academic-grammar-mistakes-that-can-weaken-research-writing\/#Unclear_Pronoun_References\" title=\" Unclear Pronoun References\"> Unclear Pronoun References<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.trinka.ai\/blog\/academic-grammar-mistakes-that-can-weaken-research-writing\/#Misplaced_and_Dangling_Modifiers\" title=\" Misplaced and Dangling Modifiers\"> Misplaced and Dangling Modifiers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.trinka.ai\/blog\/academic-grammar-mistakes-that-can-weaken-research-writing\/#Overly_Complicated_Sentence_Structures\" title=\" Overly Complicated Sentence Structures\"> Overly Complicated Sentence Structures<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.trinka.ai\/blog\/academic-grammar-mistakes-that-can-weaken-research-writing\/#Inconsistent_Parallel_Structure\" title=\" Inconsistent Parallel Structure\"> Inconsistent Parallel Structure<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.trinka.ai\/blog\/academic-grammar-mistakes-that-can-weaken-research-writing\/#Problems_With_Active_and_Passive_Voice\" title=\" Problems With Active and Passive Voice\"> Problems With Active and Passive Voice<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.trinka.ai\/blog\/academic-grammar-mistakes-that-can-weaken-research-writing\/#Punctuation_and_Sentence_Boundaries\" title=\" Punctuation and Sentence Boundaries\"> Punctuation and Sentence Boundaries<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.trinka.ai\/blog\/academic-grammar-mistakes-that-can-weaken-research-writing\/#Conclusion\" title=\"Conclusion\">Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Subject-Verb_Agreement_Errors\"><\/span><strong> Subject-Verb Agreement Errors<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<\/li>\n<\/ol>\n<p>One of the first things to check is whether the subject and verb agree in number. This can become difficult in research writing because sentences often contain several nouns between the subject and the verb.<\/p>\n<div style=\"background-color: #f4f8fb; border-left: 5px solid #2b6cb0; padding: 20px; margin: 30px 0; border-radius: 6px;\">\n<p style=\"font-size: 16px; line-height: 2; margin-bottom: 15px;\"><strong>Incorrect:<\/strong> The results of the experiment shows a significant difference.<br \/>\n<strong>Correct:<\/strong> The results of the experiment show a significant difference.<\/p>\n<\/div>\n<p>Here, \u201cresults\u201d is the subject, so the plural verb \u201cshow\u201d is required. A useful way to catch these errors is to temporarily ignore phrases between the subject and verb and identify the main subject first. Subject-verb agreement is also an important area of grammar in academic writing guidance. (<a href=\"https:\/\/www.fordham.edu\/academics\/academic-resources\/writing-center\/writing-resources\/grammar\/subject-verb-agreement\/\">Fordham University<\/a>)<\/p>\n<ol start=\"2\">\n<li>\n<h3><span class=\"ez-toc-section\" id=\"Inconsistent_Verb_Tenses\"><\/span><strong> Inconsistent Verb Tenses<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<\/li>\n<\/ol>\n<p>Once subject-verb agreement is correct, the next question is whether the verb tense accurately reflects the research being described. Academic papers often move between different time frames, so tense should change when the meaning requires it, not simply because the writer has moved to a new sentence.<\/p>\n<p>For example, researchers generally describe completed procedures in the past tense: \u201cSamples were collected from three sites.\u201d However, established knowledge may be presented in the present tense: \u201cPrevious studies suggest that temperature affects growth.\u201d The appropriate tense can depend on the section and discipline, so researchers should also follow the conventions of their target journal. (<a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC5730143\/\">PubMed Central<\/a>)<\/p>\n<ol start=\"3\">\n<li>\n<h3><span class=\"ez-toc-section\" id=\"Problems_With_Articles\"><\/span><strong> Problems With Articles<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<\/li>\n<\/ol>\n<p>Small words can create problems for researchers writing in English, particularly when English is an additional language. Articles such as \u201ca,\u201d \u201can,\u201d and \u201cthe\u201d tell readers whether a noun refers to something general, one unspecified example, or something specific.<\/p>\n<div style=\"background-color: #f4f8fb; border-left: 5px solid #2b6cb0; padding: 20px; margin: 30px 0; border-radius: 6px;\">\n<p style=\"font-size: 16px; line-height: 2; margin-bottom: 15px;\"><strong>Incorrect:<\/strong> The researchers collected data from laboratory in India.<br \/>\n<strong>Correct:<\/strong> The researchers collected data from a laboratory in India.<\/p>\n<\/div>\n<p>Because articles are easily overlooked during proofreading, they can remain in a manuscript even after several rounds of editing. Research examining grammatical errors in published health-care articles has also identified article errors as a common category. (<a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC8150060\/\">PubMed Central<\/a>)<\/p>\n<ol start=\"4\">\n<li>\n<h3><span class=\"ez-toc-section\" id=\"Unclear_Pronoun_References\"><\/span><strong> Unclear Pronoun References<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<\/li>\n<\/ol>\n<p>Another common problem occurs when a pronoun does not clearly identify what it refers to. Words such as \u201cthis,\u201d \u201cit,\u201d \u201cthey,\u201d and \u201cwhich\u201d are useful for avoiding repetition, but they can make research writing vague when several possible references appear in the same sentence.<\/p>\n<p><strong>Unclear:<\/strong> The researchers changed the protocol after the trial, which improved the results.<\/p>\n<p>The reader may not immediately know whether \u201cwhich\u201d refers to the trial, the protocol, or the change itself. A clearer version is:<\/p>\n<p><strong>Clear:<\/strong> Changing the protocol after the trial improved the results.<\/p>\n<p>When a pronoun could have more than one possible reference, repeating the important noun is often better than leaving the reader to interpret it.<\/p>\n<ol start=\"5\">\n<li>\n<h3><span class=\"ez-toc-section\" id=\"Misplaced_and_Dangling_Modifiers\"><\/span><strong> Misplaced and Dangling Modifiers<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<\/li>\n<\/ol>\n<p>Clarity can also suffer when descriptive phrases are separated from the words they are intended to modify. This is particularly common in long sentences describing research procedures.<\/p>\n<div style=\"background-color: #f4f8fb; border-left: 5px solid #2b6cb0; padding: 20px; margin: 30px 0; border-radius: 6px;\">\n<p style=\"font-size: 16px; line-height: 2; margin-bottom: 15px;\"><strong>Incorrect:<\/strong> Using the revised protocol, the results were analyzed by the researchers.<br \/>\n<strong>Correct:<\/strong> Using the revised protocol, the researchers analyzed the results.<\/p>\n<\/div>\n<p>The first sentence suggests that the results used the protocol. The second clearly identifies the researchers as the ones who used it. Keeping modifiers close to the words they describe can prevent this unintended meaning. (<a href=\"https:\/\/academic.oup.com\/book\/58841\/chapter\/489871459\">Oxford University Press<\/a>)<\/p>\n<ol start=\"6\">\n<li>\n<h3><span class=\"ez-toc-section\" id=\"Overly_Complicated_Sentence_Structures\"><\/span><strong> Overly Complicated Sentence Structures<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<\/li>\n<\/ol>\n<p>Researchers often need to communicate several pieces of information in one sentence. However, adding too many clauses can make the grammatical structure difficult to control. This can lead to run-on sentences, fragments, misplaced phrases, or sentences in which the main point becomes difficult to identify.<\/p>\n<p><strong>Difficult:<\/strong> The samples were collected from three locations that were selected based on their proximity to the treatment area and because previous studies had reported similar conditions and they were stored at 4\u00b0C before analysis.<\/p>\n<p>Breaking the information into two sentences can make the relationship between the ideas clearer:<\/p>\n<p><strong>Clearer:<\/strong> The samples were collected from three locations selected for their proximity to the treatment area and similarity to conditions reported in previous studies. They were stored at 4\u00b0C before analysis.<\/p>\n<p>The goal is not to make every sentence short. Instead, each sentence should have a structure that readers can follow easily.<\/p>\n<ol start=\"7\">\n<li>\n<h3><span class=\"ez-toc-section\" id=\"Inconsistent_Parallel_Structure\"><\/span><strong> Inconsistent Parallel Structure<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<\/li>\n<\/ol>\n<p>The same principle applies when presenting multiple research aims, methods, or findings. When items perform the same grammatical role, they should generally follow the same structure.<\/p>\n<div style=\"background-color: #f4f8fb; border-left: 5px solid #2b6cb0; padding: 20px; margin: 30px 0; border-radius: 6px;\">\n<p><strong>Incorrect:<\/strong> The study aimed to identify risk factors, evaluating outcomes, and to compare treatment groups.<\/p>\n<p><strong>Correct:<\/strong> The study aimed to identify risk factors, evaluate outcomes, and compare treatment groups.<\/p>\n<\/div>\n<p>The corrected version makes the three research aims easier to recognize because they use the same verb form. Consistency becomes especially important when sentences contain several items that readers need to compare.<\/p>\n<ol start=\"8\">\n<li>\n<h3><span class=\"ez-toc-section\" id=\"Problems_With_Active_and_Passive_Voice\"><\/span><strong> Problems With Active and Passive Voice<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<\/li>\n<\/ol>\n<p>Voice is another area where researchers can improve clarity. Passive voice is not grammatically incorrect and can be useful when the action or procedure is more important than the person performing it.<\/p>\n<div style=\"background-color: #f4f8fb; border-left: 5px solid #2b6cb0; padding: 20px; margin: 30px 0; border-radius: 6px;\">\n<p style=\"font-size: 16px; line-height: 2; margin-bottom: 15px;\"><strong>Passive:<\/strong> The samples were analyzed using microscopy.<br \/>\n<strong>Active:<\/strong> We analyzed the samples using microscopy.<\/p>\n<\/div>\n<p>Both sentences are grammatically correct. The better choice depends on the context and the journal\u2019s style. Researchers should avoid changing every passive sentence into an active one simply because active voice is often considered clearer. Instead, choose the construction that keeps the focus on the most important information. (<a href=\"https:\/\/writingcenter.gmu.edu\/writing-resources\/grammar-style\/active-and-passive-voice\">George Mason University<\/a>)<\/p>\n<ol start=\"9\">\n<li>\n<h3><span class=\"ez-toc-section\" id=\"Punctuation_and_Sentence_Boundaries\"><\/span><strong> Punctuation and Sentence Boundaries<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<\/li>\n<\/ol>\n<p>After checking sentence structure, review punctuation. Commas, semicolons, and periods help readers understand how clauses and ideas relate to one another. Incorrect punctuation can therefore affect meaning as well as readability.<\/p>\n<p>One common problem is a comma splice, where two independent clauses are joined only by a comma.<\/p>\n<div style=\"background-color: #f4f8fb; border-left: 5px solid #2b6cb0; padding: 20px; margin: 30px 0; border-radius: 6px;\">\n<p><strong>Incorrect:<\/strong> The samples were stored at 4\u00b0C, they were analyzed the next day.<\/p>\n<p><strong>Correct:<\/strong> The samples were stored at 4\u00b0C, and they were analyzed the next day.<\/p>\n<\/div>\n<p>Reading complicated sentences slowly during the final editing stage can help researchers notice places where punctuation or a sentence break is needed. (<a href=\"https:\/\/www.utm.utoronto.ca\/rgasc\/student-resource-hub\/writing-resources\/ten-common-grammatical-errors-and-conventions-academic\">University of Toronto Mississauga<\/a>)<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><strong>Treat grammar as a separate editing stage:<\/strong> Review language after completing the manuscript\u2019s content and structure, focusing specifically on grammar and sentence-level issues.<\/li>\n<li><strong>Check common grammar issues systematically:<\/strong> Review subject-verb agreement, verb tense, articles, pronouns, modifiers, sentence boundaries, parallel structure, and punctuation.<\/li>\n<li><strong>Review sentences in context:<\/strong> A grammatically correct sentence can still cause confusion within a paragraph. Check pronoun references, tense consistency, and the flow between sentences.<\/li>\n<li><strong>Use a grammar checker as an additional review:<\/strong> Tools such as Trinka <a href=\"https:\/\/www.trinka.ai\/grammar-checker\">Grammar Checker<\/a> can help identify grammar, spelling, punctuation, sentence-structure, and word-choice issues in academic and technical writing.<\/li>\n<li><strong>Apply your own judgment:<\/strong> Always review grammar suggestions in context, especially when working with specialized terminology, research methods, and discipline-specific language.<\/li>\n<li><strong>Focus on clarity, not simplification:<\/strong> Good academic writing does not mean removing complexity. It means presenting complex ideas clearly, precisely, and in a way that readers can easily follow.<\/li>\n<\/ul>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Learn about common academic grammar mistakes that can weaken research writing and discover how to improve clarity, accuracy, readability, and overall writing quality.<!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":13,"featured_media":7607,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[175],"tags":[],"acf":[],"featured_image_url":"https:\/\/www.trinka.ai\/blog\/wp-content\/uploads\/2026\/09\/Trinka-New-Blog-Banners-2026-56.png","_links":{"self":[{"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/posts\/7606"}],"collection":[{"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/comments?post=7606"}],"version-history":[{"count":1,"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/posts\/7606\/revisions"}],"predecessor-version":[{"id":7608,"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/posts\/7606\/revisions\/7608"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/media\/7607"}],"wp:attachment":[{"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/media?parent=7606"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/categories?post=7606"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.trinka.ai\/blog\/wp-json\/wp\/v2\/tags?post=7606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}