Grammar errors don't just cost points on the rubric — they tell a tired grader that the rest of the paper probably isn't careful either. And most avoidable errors aren't the ones spellcheck catches. They're the ones your eye skims past because you've reread the sentence 12 times and you're reading what you meant, not what you wrote. What you need the hour before submission is a fresh-eyes scan of the specific errors that actually show up.
PaperDraft is a writing assistant, not a paper generator — the draft is your starting point, not your submission. You are responsible for editing, verifying sources, and following your school's academic integrity policy.
This is a mechanics-only checklist — the final pre-submit scan. For the full editing process that leads up to this, see our guide on how to edit your research paper in 5 passes. For the broader revision checklist that covers structure and argument, see our research paper revision checklist. This page is just the 20 grammar-and-mechanics items to tick through right before you hit submit.
How to use this checklist
Print it or keep it open beside your paper. Go through each item, one at a time. Don't try to scan for everything simultaneously — pick one item, read through the paper looking only for that, then move to the next. This is the final pre-submit scan, not the place to rewrite arguments.
For the broader workflow from drafting to polishing, the pillar guide to writing a research paper covers every stage.
Grammar and sentence-level errors
1. Subject-verb agreement
"The data suggest" (data is plural in formal writing) vs. "The data suggests" (increasingly accepted in less formal contexts — check your style guide). In formal academic writing, default to plural.
2. Pronoun-antecedent mismatch
"A researcher must submit their work" (formerly controversial, now widely accepted). But "each of the participants wrote in their notebook" needs checking — make sure the pronoun matches what it refers to.
3. Sentence fragments
Especially common after semicolons or in headings you forgot to convert. Read each sentence and confirm it has a subject and a verb.
4. Run-on sentences
If a sentence is more than three lines of text, it's probably a run-on. Break into two.
5. Dangling modifiers
"After analyzing the data, the conclusions became clear." Who analyzed? The sentence implies the conclusions did. Fix: "After analyzing the data, we saw clear conclusions."
6. Passive voice overuse
Academic writing allows passive voice, but overuse reads weak. Flag any paragraph where every sentence is passive.
Punctuation
7. Comma splices
Two independent clauses joined by a comma is an error. Use a semicolon, a period, or a conjunction. "The study was small, the results were consistent" is wrong.
8. Oxford comma consistency
Whichever convention you follow, be consistent throughout the paper. Most academic styles use the Oxford comma (e.g., "A, B, and C").
9. Semicolons used as commas
Semicolons join two independent clauses or separate items in a list where the items contain commas. Don't use them just because a comma feels weak.
10. Apostrophes in possessives vs. plurals
"The 1990s" (plural, no apostrophe). "The 1990's impact on policy" (possessive, with apostrophe). Easy to get wrong.
11. Quotation marks and punctuation
In American English, commas and periods go inside quotation marks. In British English, they often go outside. Match your style guide.
Word choice and diction
12. Affect vs. effect
"Affect" is (usually) a verb. "Effect" is (usually) a noun. "The intervention affected outcomes" vs. "The intervention had an effect on outcomes."
13. Which vs. that
"That" introduces restrictive clauses (no comma). "Which" introduces non-restrictive clauses (with comma). "The paper that I cited" vs. "The paper, which I cited yesterday, argues..."
14. Common homophones
Their / there / they're. Your / you're. Its / it's. Spellcheck doesn't catch these. Do a search for each.
15. Unnecessarily formal filler
"Utilize" (use "use"). "In order to" (use "to"). "Due to the fact that" (use "because"). These inflate word count without adding meaning.
Running through your grammar checklist at 11pm the night before? PaperDraft gives you a structured first draft — thesis stub, outline, cited opening sections — so you can spend your time running final checks instead of generating content. It's a drafting assistant, not a submission. Try PaperDraft — free
Formatting and citations
16. Citation format consistency
Every in-text citation uses the same format (APA, MLA, Chicago). No mixing. Every in-text citation has a matching entry in the reference list, and vice versa.
17. Reference list order and formatting
APA: alphabetical by first author's last name. MLA: alphabetical, hanging indent. Chicago: depends on notes-bibliography or author-date. Check one is correct for your required style.
18. Heading hierarchy
H1, H2, H3 should nest correctly. Don't jump from H1 to H3. Heading format (bold, italic, centered) should be consistent with style guide.
19. Page numbers, margins, font, spacing
Most papers require 1-inch margins, 12pt Times New Roman (or similar), double-spaced. Page numbers usually top-right or bottom-center. Check the syllabus.
20. File name and submission format
"Lastname_PaperTitle.docx" is standard in many courses. Double-check the required file format (PDF vs. Word vs. both) and the submission portal.
For a working structure that handles most of the formatting correctly out of the gate, our research paper outline (APA) template gives you the right heading hierarchy and citation scaffolding.
Common submission-day mistakes
Running spellcheck and nothing else
Spellcheck misses wrong-word errors, citation mismatches, formatting errors, and every issue above that isn't a misspelling. Useful, not sufficient.
Editing on the same device you wrote on
Your eye has adapted to the draft on your screen. Print it, or switch to a different device, or at minimum change the font for the final pass.
Skipping the reference-list check
A missing reference or a mismatched in-text citation is an easy fix if caught, but it's also an easy point loss if missed. Do a dedicated citation-match pass.
Rewriting instead of checking
This is the mechanics pass. If you find yourself rewriting paragraphs, you're in the wrong pass. Flag them for later if you have time; otherwise leave them.
Leaving it until 15 minutes before submission
The grammar checklist takes 30–45 minutes for a 3,000-word paper. Run it with at least an hour of buffer before the deadline.
Not reading aloud
Many of the errors above — especially run-ons, fragments, and awkward phrasing — are easier to catch aurally than visually. Read aloud or use text-to-speech.
For a full list of revision-level issues beyond grammar, the sister revision checklist covers structure, argument, and evidence. And if you want a quick quality scan of the paper overall, see research paper self-review.
How to use this guidance with a drafting assistant
A drafting assistant like PaperDraft produces a first draft with decent baseline grammar and citation formatting, which means you spend less time on basic mechanics and more time on the items that really matter — argument, evidence, and voice. That said, the draft's grammar is not automatically polished to final quality. You still have to run this checklist, because tools sometimes introduce awkward phrasing, missing citations, or formatting quirks.
Treat the draft as the starting point. Edit the prose into your voice, verify every source, and then run this 20-item scan right before submission. That's the difference between a draft and a paper.
Frequently asked questions
How long does the grammar checklist take?
For a 3,000-word paper, 30–45 minutes. For a 6,000-word paper, about an hour. Don't rush it.
Should I use Grammarly or similar tools?
They catch some things and miss others. Treat them as a first sweep, not a substitute for the checklist. Automated tools over-flag passive voice and under-flag citation mismatches.
What if I find a structural problem during the grammar pass?
Flag it and keep going on the mechanics pass. If you have time after, fix it. If not, a small structural issue is usually lower-risk than unpolished mechanics.
Does the checklist apply to every style (APA, MLA, Chicago)?
The grammar items do. The citation and formatting items vary — items 16–19 need to be adapted to your required style.
Is one grammar pass enough?
For most undergraduate papers, yes — if it's a careful pass with fresh eyes. For theses and major papers, two passes separated by at least an hour is safer.