The TCF Canada Writing section has 3 independent tasks in about 60 minutes — each graded on its own criteria, so a strong task doesn't make up for a weak one elsewhere. Structure of each task type, the mistakes that cost the most points, and how to practice correctly.
Write a short message/email for a specific situation (e.g. sharing news, requesting information, responding to a request). Concise, on-topic, and in the right register (formal/informal depending on the prompt).
Describe an event, experience, or situation as prompted. Needs a clear narrative arc, correct tense use (past, present), and concrete detail instead of vague generalities.
State and defend a position on a social topic. Needs structured argumentation: introduce the point, support it with evidence, address a counterpoint, conclude — not just a list of opinions.
Does the piece match the required format, length, and actually answer the prompt — going off-topic loses heavily even if the writing itself is polished.
Are ideas connected with proper linking words (donc, cependant, par ailleurs...) or do sentences sit disconnected with no logical flow?
Varied and in context, avoiding constant repetition — using vocabulary that actually matches the prompt's topic.
Correct verb conjugation, tense, agreement — a repeated grammar error loses more points than a single one-off mistake.
The most common mistake isn't grammar — it's going off-topic or rambling, especially on the argumentative essay, where writers list several points without developing any of them in depth. The second most common is missing linking words, which makes the piece read as a string of disconnected sentences instead of a coherent paragraph. Examiners catch both of these quickly, even when the grammar itself is fine.
Write against a template for each task type first, then practice with real timed exam prompts. The most important part: have someone grade your writing against the 4 criteria above — it's genuinely hard to catch your own off-topic drift or missing cohesion, because you always know what you meant, even when it doesn't read clearly to someone else. This is the same reason Writing practice needs feedback the same way Speaking practice needs shadowing feedback — without it, mistakes just repeat unfixed.
Knowing the full TCF Canada exam structure and using the right topic vocabulary helps your Writing hit the prompt directly while sounding more varied.
Book a free consult — Hải will help you find where you're losing the most points and how to fix it.