Writing Tips · 8 min read · January 15, 2024

Common Mistakes in Academic Writing: 10 ESL Patterns and Revision Checks

Identify common mistakes in academic writing through fictional ESL learning examples, a layered revision process, clearer academic alternatives, and writing-center-backed editing checks for international students.

Introduction

Writing academic papers in an additional language can make it harder to present strong ideas as clearly as you intend. A sentence-level pattern does not mean that a writer lacks knowledge or analytical ability; it simply gives the writer a specific point to review. Even students with strong conversational English may need a different revision routine for academic prose.

The good news is that many grammar and style patterns are visible once you know what to check. A focused review can help you make the relationship among claim, evidence, and sentence structure easier for a reader to follow—without replacing your own ideas with generic or unnecessarily complicated language.

> Fictional learning examples: The short sentences in this guide are invented examples for practice. They are not real student work, research findings, instructor feedback, or sentences to submit unchanged. Adapt any revision to your own meaning, evidence, discipline, and assignment instructions.

An eight-step way to find patterns, not just isolated errors

1. Read task, reader, and policy. Confirm the genre, discipline, required level of formality, language or AI policy, and the kind of support your instructor permits before changing sentences.

2. Check the whole paper first. Revisit the question, thesis or central claim, evidence, section purpose, and paragraph sequence; a grammar correction cannot repair a missing reason or unsupported conclusion.

3. Choose one recurring pattern. Start with the issue that makes meaning hard to follow—such as an unclear pronoun, article choice, subject–verb match, sentence boundary, or literal translation—rather than trying to fix everything at once.

4. Read as a new reader. Read the sentence aloud and in its paragraph. Ask what each pronoun refers to, what the main verb is, and how the sentence connects old information to new information.

5. Revise for the actual meaning. Retain technical terms, qualification, discipline-specific wording, and your intended level of certainty; do not replace words merely to sound more “advanced.”

6. Check claims and sources. Make sure an edited sentence has not altered a result, changed causal language, removed a limitation, or separated a borrowed idea from its citation.

7. Proofread one category at a time. After the content and structure pass, make focused passes for grammar, punctuation, spelling, and formatting rather than relying blindly on a checker.

8. Record and recheck. Note patterns you want to learn, use a dictionary, writing center, librarian, or instructor when uncertain, and submit only writing you can explain and take responsibility for.

Mistake 1: Redundant Subject Pronouns

What it looks like: "The study, it shows that..." or "The results, they indicate..."

Why it happens: A writer may be carrying spoken emphasis into a formal sentence or may be revising a sentence that already has a complete grammatical subject. In edited academic English, the repeated pronoun usually adds no new information.

The fix: Remove the extra pronoun entirely.

Corrected: "The study shows that..."

Mistake 2: Overusing the Word "Very"

What it looks like: "This is a very important factor" or "The results are very significant."

Why it happens: Students often translate intensifiers directly from everyday speech into their academic writing.

The fix: State the specific reason something matters, and use stronger wording only when your evidence and discipline justify it. Do not use *significant* merely as a more formal synonym for *important* when you mean statistical significance or another technical claim.

Corrected: Replace vague emphasis with the criterion that matters—for example, explain whether a factor is central to the research question, substantial in scale, or relevant to a particular outcome.

Mistake 3: Informal First-Person Fillers

What it looks like: "In my opinion, I think..." or "I believe that..."

Why it happens: Conversational English habits carry over into formal university assignments.

The fix: Use evidence-led phrasing that removes the subjective "I".

Corrected: "This analysis suggests..." or "The evidence indicates..."

Mistake 4: Incorrect Article Usage (a/an/the)

What it looks like: "The research shows that education is important factor."

Why it happens: Article choices depend on whether a noun is countable, specific, previously introduced, or used in a general sense. Writers whose first language handles these distinctions differently may need a deliberate checking routine, but every writer benefits from checking the noun phrase in context.

The fix: Review whether the noun is countable, specific, or already introduced.

Corrected: "The research shows that education is an important factor."

Mistake 5: Subject-Verb Agreement Errors in Long Sentences

What it looks like: "The number of participants were..." or "The results of the complex study shows..."

Why it happens: Long prepositional phrases can hide the true subject of the sentence, confusing the writer about whether the verb should be singular or plural.

The fix: Identify the grammatical head noun first, ignoring the prepositional phrase, then match the verb to it.

Corrected: "The number [of participants] was..." but "The participants were..."

Mistake 6: Passive Voice Overuse

What it looks like: "It was found by the researchers that the results were shown to be significant."

Why it happens: Some writers learn that academic writing must always sound impersonal, so they may choose a complex passive structure even when naming the actor would help a reader follow the process.

The fix: Use active voice when it improves clarity and directness, but keep passive voice when the action, result, or conventional disciplinary focus matters more than the actor.

Corrected: "The researchers found that the results were significant."

Mistake 7: Run-On Sentences

What it looks like: Several independent ideas joined only with commas, creating a massive, confusing block of text.

Why it happens: When several independent ideas are drafted at once, punctuation and logical connections can become unclear. Academic writing can use long sentences, but readers need to see how each clause connects to the next.

The fix: Break the idea into shorter units using periods, or use a stronger connector (like a semicolon or conjunction). Readers should be able to follow your logic easily on the first pass.

Mistake 8: Incorrect Prepositions

What it looks like: "The research is based in the theory of..." or "This finding is consistent to..."

Why it happens: Prepositions rarely map cleanly from one language to another through direct translation.

The fix: Learn and memorize common academic collocations (words that naturally go together).

Corrected: "based on," "consistent with," "associated with," and "relevant to."

Mistake 9: Tense Inconsistency

What it looks like: "The study found that X is true. The researchers showed that Y was important."

Why it happens: Students are often unsure when to use present tense for general claims versus past tense for specific studies.

The fix: Use past tense for what a particular study did or found in the past, and present tense for accepted general knowledge or what your paper is arguing right now.

Mistake 10: Literal Translation (Chinglish/Spanglish)

What it looks like: "The research has a big meaning for..." or "This problem is very seriousness."

Why it happens: Direct, word-for-word translation often produces phrases that are technically understandable but not idiomatic to native academic readers.

The fix: Replace translated expressions with standard academic combinations.

Corrected: "has important implications for" or "raises serious concerns about."

Add a focused final review for common sentence patterns

The ten patterns above are not the only possible revision targets. University writing resources also commonly flag agreement, unclear pronoun reference, comma splices, misplaced modifiers, fragments, word choice, punctuation, passive-versus-active choices, and wordiness. For example, this should point to a clear noun rather than an entire unclear previous sentence, and two complete sentences usually need a period, semicolon, or appropriate conjunction rather than a comma alone.

A useful rule is to fix the communication problem, not merely make a sentence sound more “advanced.” Passive voice can be appropriate when the action or result matters more than the actor; a concise, direct active sentence may be better when naming the actor makes the process clearer. Your course, genre, and discipline determine which choice fits.

A Practical Editing Routine for International Students

Before submitting your paper, do one revision pass strictly for grammar and another separate pass for style. Looking for everything at once is slow and frustrating. A focused checklist usually works much better:

• [ ] Check article use (a/an/the) sentence by sentence.
• [ ] Highlight the main verbs to test subject-verb agreement.
• [ ] Read your topic sentences aloud to hear awkward phrasing.
• [ ] Search the document for repeated weak words such as "very," "important," and "good."
• [ ] Review whether each paragraph has one clear, single purpose.

Use three focused passes instead of one overloaded pass

Pass 1 — Sentence control: Review articles, subject–verb agreement, pronoun reference, verb tense, fragments, and comma splices. Read one sentence at a time and identify its main subject and verb before changing anything.

Pass 2 — Meaning and evidence: Check whether each claim says exactly what the evidence supports. Replace vague intensifiers such as *very important* only when you can name a more precise meaning. Keep citations near borrowed ideas, and do not let polished wording hide an unsupported claim.

Pass 3 — Paragraph and section function: Check that a paragraph begins with a clear job, develops it with relevant evidence or explanation, and transitions logically to the next point. In a research paper, keep procedures in Methods, findings in Results, and interpretation in Discussion unless your discipline uses a combined structure.

Use writing-center guidance and your assignment instructions

The University of Wisconsin–Madison Writing Center presents common error categories as brief editing reminders and directs writers to classes, conferences, instructors, and handbooks for fuller support. Purdue OWL explains reader-oriented clarity choices such as information flow, transitions, clause placement, parallel construction, action verbs, and clear pronoun references. UNC Writing Center separates content, structure, paragraph, clarity, style, and citation editing from final proofreading for surface errors. These resources support clearer communication; they do not measure a writer’s ideas, potential, or value. Your instructor’s rubric and discipline-specific conventions remain the final standard.

Keep Learning From Your Revision Patterns

Many of these problems can arise when a sentence has been translated too closely from another language, when conversational language is transferred to a formal task, or when a draft is edited before its argument and paragraph path are clear. For more focused guidance, visit Academic English support for ESL and international students, browse the academic phrase library, use the academic paragraph structure guide, or use CorePapers Essay Polish for a second pass on clarity, tone, and academic phrasing. Check hedging language before making a claim sound stronger, use the research paper revision checklist for a final whole-draft review, and consult academic integrity and source use whenever the draft uses sources.