Common Grammar Mistakes ESL Students Make in UK Academic Writing (And How to Fix Them)
A small, predictable set of grammar patterns accounts for most of the language marks lost by international students in UK academic writing. These aren’t signs of weak English overall — they’re specific, learnable patterns that repeat because English handles them differently from most other languages. Here are the ones that show up most often in dissertations and assignments, with the fix for each. (The University of Manchester’s Academic Phrasebank is also a great resource for seeing correct academic phrasing modelled in context.)
1. Articles (“a,” “an,” “the”)
Article errors are consistently one of the top mistakes for non-native writers, largely because many languages don’t have direct equivalents to English articles at all.
The rule: Use “a/an” for something general or mentioned for the first time; use “the” when both you and the reader already know exactly which one you mean.
❌ “Study examined impact of remote work.”
✅ “The study examined the impact of remote work.”
2. Subject-Verb Agreement
This is one of the most frequent errors in ESL academic writing, especially when a long phrase separates the subject from its verb — the writer’s ear tracks the nearest noun instead of the true grammatical subject.
❌ “The impact of social media on political views of young voters are significant.”
✅ “The impact of social media on political views of young voters is significant.”
Fix: Mentally cross out the phrase between the subject and verb. Here, “The impact … is” — “impact” is singular, so the verb must be too.
3. Verb Tense Inconsistency
Tense shifting without a clear reason is a particularly jarring error because it disrupts the reader’s sense of when something happened — and it’s genuinely difficult for ESL writers, since not every language expresses time the way English does.
❌ “The researcher collected the data and analyzes the results.”
✅ “The researcher collected the data and analyzed the results.”
A UK-specific tip: Academic convention typically uses past tense for describing what you did (“I conducted interviews”) and present tense for what the literature says (“Smith argues that…”). Check your department’s convention and apply it consistently — then do a dedicated tense-only read-through as a separate editing pass, not mixed in with general proofreading.
4. Prepositions
Prepositions are especially persistent for ESL writers because English preposition usage is largely idiomatic — it often can’t be reliably worked out from grammar rules, only learned collocation by collocation.
❌ “The results are consistent to previous findings.”
✅ “The results are consistent with previous findings.”
Fix: Keep a running list of the specific verb-preposition and adjective-preposition pairs common in your subject area (“consistent with,” “responsible for,” “based on”) and review it periodically — these have to be memorised individually, not deduced.
5. Countable vs Uncountable Nouns
Nouns that are countable in one language aren’t always countable in English, and vice versa — a common source of quiet, easy-to-miss errors.
❌ “The researchers collected many datas.”
✅ “The researchers collected a lot of data.” (data is typically treated as uncountable in academic English)
6. Run-Ons and Comma Splices
Joining two complete sentences with just a comma is a frequent structural error in ESL academic writing.
❌ “The sample size was small, this limits generalisability.”
✅ “The sample size was small, which limits generalisability.” (or split into two sentences, or use a semicolon)
7. Direct Translation from Your First Language (L1 Interference)
This is often the hardest pattern to self-correct, because the resulting sentence is frequently grammatically valid English — it just follows your first language’s sentence logic rather than English’s, and reads as subtly unnatural to a native academic reader. This is exactly the kind of error a grammar-checking tool tends to miss, since nothing is technically “wrong.”
8. Vague Pronoun Reference
Using “this,” “it,” or “which” without a clear, single noun to point back to forces the reader to guess your meaning.
❌ “The policy changed and funding increased, which surprised researchers.” (which — the policy change, or the funding increase?)
✅ “The policy change, which surprised researchers, led to increased funding.”
A Practical Way to Catch These in Your Own Writing
- Do separate passes for separate error types — one read-through just for tense consistency, one just for articles, rather than trying to catch everything at once
- Read your work aloud — awkward phrasing from L1 interference is often easier to hear than to see
- Keep a personal list of the specific mistakes you make repeatedly — everyone’s pattern is slightly different, and your own list is more useful than a generic one
- Don’t rely solely on grammar-checking software — it catches clear rule violations but consistently misses L1 interference patterns and idiomatic preposition errors, because the sentence is often technically grammatical
How ASH Helps
This is exactly the layer ASH’s proofreading and editing service is built around — not generic grammar checking, but the specific patterns that show up in ESL academic writing, corrected without touching your argument or ideas. See our fuller guide on why international students lose marks for English in the UK for how this connects to your overall grade.
If you want your writing checked for these specific patterns before you submit, message ASH on WhatsApp:
👉 Chat with ASH on WhatsApp: +92 313 1624960
(This WhatsApp number is ASH’s official business line.)
Related Guides
- Why International Students Lose Marks for English in the UK
- Dissertation Proofreading for International Students: The Complete UK Guide
- ASH Editing & Proofreading Services
FAQs
Why do grammar checkers miss some of my mistakes?
Tools like Grammarly catch clear rule violations well, but they consistently miss L1 interference (sentences that are grammatically valid but read unnaturally) and idiomatic preposition errors, since nothing is technically wrong with the sentence structure.
What’s the single most common ESL grammar mistake in academic writing?
Research on ESL academic writing consistently points to subject-verb agreement and article errors as among the most frequent, though the exact ranking varies by study and first language.
Should I try to fix every error type at once?
No — doing separate, focused passes (one for tense, one for articles, one for prepositions) catches more than trying to review everything in a single read-through.
Is it normal to still make these mistakes at an advanced English level?
Yes — these patterns persist even in advanced and fluent ESL writers, since they’re rooted in structural differences between languages, not overall English proficiency.
Want your writing checked for these specific patterns before you submit? Message ASH on WhatsApp: +92 313 1624960.