TCF Canada Grammar: 10 Common Mistakes to Avoid

After analyzing thousands of TCF Canada practice responses, certain grammar mistakes appear repeatedly among candidates at all levels. Eliminating these common errors can significantly improve your score because evaluators notice patterns of accuracy. Here are the ten mistakes you should work to eliminate before exam day.

1. Gender Agreement Errors

French noun genders cause persistent difficulties for English speakers. Every adjective and article must agree with its noun in gender and number. A frequent error is writing "un problème important" correctly but then forgetting agreement in longer sentences: "Cette problème est importante" should be "Ce problème est important" because problème is masculine despite ending in -e.

PassFrench tip: Create flashcards for nouns whose gender surprises you, and always learn nouns with their articles.

2. Confusing Être and Avoir in Passé Composé

Remember that movement verbs (aller, venir, arriver, partir, etc.) and reflexive verbs use être as their auxiliary in passé composé. "J'ai allé" is incorrect; it must be "Je suis allé." Additionally, when using être, the past participle agrees with the subject: "Elle est allée" but "Il est allé."

3. Incorrect Preposition Usage

Prepositions rarely translate directly between English and French. Common errors include "penser à" vs "penser de," "jouer à" (sports) vs "jouer de" (instruments), and country prepositions: "au Canada," "en France," "aux États-Unis." These must be memorized individually because there is no universal rule.

4. Misusing "C'est" and "Il est"

This distinction frequently trips up candidates. Use "c'est" before a noun phrase (c'est un bon professeur) and "il est" before an adjective alone (il est intelligent). When describing professions without an article, use "il est": "Il est médecin" not "C'est médecin."

5. Forgetting Partitive Articles

English does not require articles before uncountable nouns, but French does. "I eat bread" becomes "Je mange du pain," not "Je mange pain." The partitive articles du, de la, de l', and des must be used when referring to an unspecified quantity of something.

6. Incorrect Placement of Object Pronouns

Object pronouns go before the conjugated verb in French, not after as in English. "Je le vois" (I see him), not "Je vois le." In compound tenses, the pronoun precedes the auxiliary: "Je l'ai vu." In the imperative affirmative, however, the pronoun follows: "Regarde-le!"

7. Subjunctive Avoidance or Misuse

Many candidates either avoid the subjunctive entirely (limiting their score ceiling) or use it incorrectly. Remember: the subjunctive is required after expressions of will, emotion, doubt, and necessity when the subjects of the two clauses differ. "Je veux que tu viennes" requires subjunctive, but "Je veux venir" uses the infinitive because the subject is the same.

8. Incorrect Negation Structures

The two-part negation (ne...pas, ne...plus, ne...jamais) must surround the conjugated verb. A common error in compound tenses is placing "pas" after the past participle: "Je n'ai pas mangé" is correct, not "Je n'ai mangé pas." Also remember that "ne...que" (only) is a restriction, not a negation.

9. Mixing Up Qui and Que

In relative clauses, "qui" is followed by a verb (it replaces the subject), while "que" is followed by a subject (it replaces the object). "L'homme qui parle" (the man who speaks) versus "L'homme que je vois" (the man whom I see). Confusing these is a clear signal to evaluators that sentence structure is not fully controlled.

10. Inconsistent Register

TCF Canada expression tasks often specify a formal or informal context. Mixing registers within one response is a grammar-level error. If you begin with "vous," maintain it throughout. If the situation calls for formal language, avoid colloquialisms and contractions like "j'sais pas."

How to Eliminate These Mistakes

At PassFrench, we have developed targeted correction exercises for each of these common errors. Our adaptive system identifies which mistakes you make most frequently and provides focused practice to address your specific weaknesses. By systematically working through these patterns, you can eliminate the errors that are currently reducing your TCF Canada score.

We recommend dedicating at least 20 minutes daily to grammar practice in the weeks leading up to your exam. Focus on one error pattern at a time until it feels automatic, then move to the next. This targeted approach is far more effective than general grammar review.