Most CELPIP writers don’t lose points because they run out of ideas. They lose points one sentence at a time, on grammar that a rater catches almost automatically. If you’ve stared at a Writing score that felt lower than it should have been, this is usually where the gap sits.
This piece walks through the grammar patterns that show up again and again in CELPIP scripts and speaking responses, why they cost candidates a CLB band, and a set of CELPIP Grammar Tips you can actually apply in your next practice session, not just read and forget.
Why Grammar Quietly Wrecks Your CLB Score
CELPIP raters aren’t hunting for perfect English. They’re checking whether you can control the language well enough that grammar never gets in the way of your message. That’s an important distinction. A single wrong article won’t cost you a band. A pattern of tense confusion, agreement slips, and sentence structures that fall apart under pressure will.
Writing and Speaking are both scored on how well you handle sentence structure, verb forms, and word choice alongside content and organization. Grammar isn’t a side category you can ignore because your ideas are strong. It runs through every criterion a rater applies, which is exactly why it pulls the whole score down when it slips.
Here’s the part most candidates miss: the mistakes below aren’t rare or unusual. They show up in a huge share of CLB 6 and CLB 7 scripts, and they’re almost entirely fixable once you know what to look for.
Mistake 1: Mixing Up Verb Tenses Mid-Response
This is the single most common issue in CELPIP Writing Task 1 emails and Task 2 responses. Under time pressure, candidates start a sentence in one tense and drift into another without noticing.
Weak: “I have moved to Toronto last year and I am working in a warehouse since then.”
Stronger: “I moved to Toronto last year and I have been working in a warehouse since then.”
Notice the fix isn’t about vocabulary at all. It’s about picking one timeline and staying inside it. “Last year” needs simple past. “Since then” needs present perfect continuous. Mixing the two is what raters flag as inconsistent control.
Mistake 2: Subject-Verb Agreement Slips
This one sneaks in whenever a sentence has a long subject, and the writer loses track of what the actual subject is by the time they reach the verb.
Weak: “The information about the new courses were sent to me last week.”
Stronger: “The information about the new courses was sent to me last week.”
“Information” is the subject, not “courses.” It’s an easy trap in longer sentences, and it’s exactly the kind of error that’s invisible when you’re focused on getting your ideas down but jumps out at a trained rater.
Mistake 3: Overloading Sentences to Sound “Advanced”
There’s a common belief that longer, more complicated sentences signal a higher level of English. In practice, this backfires more than it helps. A 40-word sentence with three clauses stitched together is far more likely to contain an agreement error, a dangling modifier, or a broken connector than three clean 12-word sentences.
Weak: “Since I have been working at this company for two years and because my manager which I respect a lot has recommended me for the promotion, I am believe that I deserve this opportunity.”
Stronger: “I have been working at this company for two years. My manager, whom I respect, has recommended me for a promotion. I believe I’ve earned this opportunity.”
The second version is shorter, cleaner, and actually reads as more confident. Raters reward control over complexity, not complexity for its own sake.
Mistake 4: Wrong Prepositions
Preposition errors are common because they rarely translate directly from other languages, and English prepositions don’t follow one consistent rule. A few that show up constantly in CELPIP scripts:
- “married with” instead of “married to”
- “depend of” instead of “depend on”
- “interested about” instead of “interested in”
- “discuss about” instead of “discuss” (no preposition needed)
- “arrived to” instead of “arrived at / arrived in”
None of these are complicated once you’ve seen them corrected. The problem is they’re invisible to the writer because they sound normal in a direct translation from Hindi, Punjabi, Tagalog, or Mandarin sentence patterns.
Mistake 5: Article Errors (a / an / the)
If your first language doesn’t use articles the way English does, this is probably your biggest silent scorer. It’s rarely a single sentence that gets flagged. It’s a pattern across the whole response.
Weak: “I am writing to inform you about problem in office building near reception.”
Stronger: “I am writing to inform you about a problem in the office building near the reception.”
A missing article here and there won’t sink a response on its own, but raters notice when it happens on nearly every sentence, because it signals the writer hasn’t internalized a core structural rule of English.
Mistake 6: Comma Splices and Run-On Sentences
This shows up most in Writing Task 2, where candidates are trying to connect an opinion to a reason quickly and end up jamming two full sentences together with just a comma.
Weak: “Working from home is better for employees, it saves commuting time and reduces stress.”
Stronger: “Working from home is better for employees because it saves commuting time and reduces stress.”
A comma alone can’t join two independent clauses. You need a conjunction, a semicolon, or a full stop. It’s a small fix, but comma splices appear in a large share of CLB 6 scripts and they’re one of the fastest wins available if you go back and check for them.
A Real Case: Moving Writing From CLB 6 to CLB 9
| Case Study — Six Weeks of Focused Grammar Work
A candidate preparing for Express Entry came into coaching with a CLB 6 Writing score, well short of the CLB 7 her program needed. Her ideas were clear and well organized. Every practice script showed the same three problems: tense drift between paragraphs, comma splices in her opinion paragraphs, and a habit of writing long sentences that lost their subject halfway through. Instead of rewriting entire essays, coaching focused on one grammar pattern per week: tense consistency first, then sentence length and comma splices, then subject-verb agreement in longer sentences. She kept using the same content and structure she already had, just cleaned up sentence by sentence. On her next attempt six weeks later, her Writing score moved to CLB 9. Nothing about her ideas changed. What changed was that the grammar stopped distracting the rater from the ideas she already had. |
What Raters Expect at Each CLB Band
It helps to know what “good enough” actually looks like at the level you’re targeting. This isn’t official CELPIP scoring documentation, just a practical summary based on patterns seen across scored practice writing:
| CLB Band | What Raters Expect on Grammar | Typical Error Pattern |
| CLB 5-6 | Simple and compound sentences used correctly most of the time | Frequent tense shifts, missing articles |
| CLB 7-8 | A mix of simple, compound, and complex sentences with only occasional slips | Preposition mistakes, occasional agreement errors |
| CLB 9+ | Consistent control across sentence types, minor slips don’t block meaning | Very rare, self-corrected errors |
Quick CELPIP Grammar Tips You Can Practice This Week
- Read your Writing Task 2 response out loud before submitting it in practice. Tense shifts are much easier to hear than to see.
- Underline every subject and its matching verb in your draft. If the sentence is long, this takes ten seconds and catches most agreement errors.
- Cap your sentences at roughly 20 words during practice. If a sentence runs longer, split it into two rather than adding another clause.
- Keep a running list of prepositions you’ve gotten wrong in past practice tests, and review it before every new attempt.
- In Speaking, pause briefly instead of rushing into a run-on sentence. A short pause reads better to a rater than a grammatically broken sentence.
- Practice with a timer, but leave the last 90 seconds of Writing Task 2 purely for a grammar check, not new content.
How This Ripples Into Your CRS Score
For most Express Entry pathways, including Federal Skilled Worker and Canadian Experience Class, the minimum requirement sits at CLB 7 across all four skills, and language ability alone is worth up to 136 Comprehensive Ranking System points for a single applicant, the highest weighted factor in the entire system. Moving Writing from CLB 6 to CLB 9 isn’t a small cosmetic gain. Under the CRS, a jump like that can add dozens of points on its own.
That’s really the reason grammar deserves more attention than it usually gets in self-study. It’s not the flashiest part of test prep, but it’s one of the most controllable, and controllable points are the ones worth chasing first.
Final Thoughts
None of the mistakes above require a complete overhaul of how you write or speak English. They’re specific, repeatable patterns, and once you can spot them in your own practice scripts, fixing them becomes a matter of habit rather than talent.
If you’d rather have someone catch these patterns in your writing and speaking before test day instead of finding out from your score report, that’s exactly the kind of feedback our coaches at JG Language Academy build into every session.
You can see how our coaching program works, including live grammar feedback on real CELPIP tasks, at
