Common French Grammar Mistakes English Speakers Make (Beyond False Friends)

Faux amis get all the attention because they’re easy to laugh about — until you tell someone you’re “excited” using excité and get a strange look. But if you’ve already read our guide to false friends that trip up English speakers, you know vocabulary is only half the battle. The mistakes that actually keep your French sounding foreign for years are grammatical: gender agreement and prepositions. They’re small, they’re everywhere, and native speakers notice them instantly.

This guide walks through the grammar errors English speakers make most often, why they happen, and how to start correcting them for good.

Why French Grammar Feels So Different From English

English grammar is fairly forgiving. Nouns don’t have gender, prepositions are flexible, and word order does most of the heavy lifting. French works the opposite way: gender and prepositions carry real grammatical weight, and getting them wrong doesn’t just sound clumsy — it can genuinely change what you’re saying. That’s why these categories of mistakes are worth isolating and drilling on their own, separately from vocabulary.

1. Gender Agreement Mistakes

Every French Noun Has a Gender — Even Objects

English speakers instinctively look for logic: why is une table feminine and un bureau masculine? There often isn’t a reason — gender is a property of the word, not the object. The fix isn’t finding the logic; it’s memorizing the article along with the noun from day one, so you learn la voiture, not just voiture.

Adjectives Must Match Gender and Number

In English, an adjective never changes: “a tall man” and “a tall woman” use the same word. In French, the adjective has to agree with the noun it describes, which means English speakers routinely forget the final -e or -s: writing un petit fille instead of une petite fille is one of the most common slips at every level, from beginner to advanced.

Articles Give You a Shortcut (le/la, un/une, ce/cette)

Because articles telegraph gender, mismatching them is one of the fastest ways to flag yourself as a non-native speaker — even when the rest of the sentence is perfect. Pay attention to ce/cette and mon/ma especially, since English speakers tend to default to the masculine form out of habit.

Possessive Adjectives Agree With the Noun, Not the Owner

This one catches almost everyone: mon, ma, mes agree with the gender of the object owned, not the gender of the person who owns it. A man can say ma voiture and a woman can say mon crayon — the possessive follows the noun, exactly like every other adjective in French.

2. Preposition Mistakes

Prepositions rarely translate word-for-word between English and French, and there’s usually no way to guess the right one — they have to be learned verb by verb and phrase by phrase. Our full reference guide to French prepositions is a good bookmark while these patterns become automatic.

“Penser à” vs “Penser de”

Penser à quelqu’un means to think of/about someone (they’re on your mind), while penser de quelqu’un asks for an opinion about them. English speakers often default to de everywhere because “think of” and “think about” feel interchangeable in English — in French, they aren’t.

Prepositions With Countries and Cities (en, au, aux, à)

English uses “to/in” for every place: to France, to Canada, to Paris. French requires a different preposition depending on the country’s gender and number — en France, au Canada, aux États-Unis — but cities always take à: à Paris. This is a rule worth memorizing as a table rather than picking up by feel.

Depuis, Pendant, and Pour Are Not Interchangeable

All three can loosely translate to “for” in English, which leads learners to use them interchangeably. Depuis marks a starting point that continues into the present (“depuis trois ans” = for three years, and counting), pendant covers a completed or defined duration, and pour refers to a planned future duration. Mixing them up is one of the clearest markers of an English-speaking learner.

Verbs That Take a Different Preposition Than in English

Some French verbs simply don’t line up with their English counterparts: écouter (to listen to) and chercher (to look for) take no preposition at all in French, while assister à (to attend) and se souvenir de (to remember) require one where English doesn’t. These have to be learned as fixed pairs — verb plus preposition — rather than translated mentally from English.

3. Other Grammar Mistakes That Aren’t False Friends

Forgetting Reflexive Pronouns

English doesn’t mark reflexive actions the way French does: “I wake up” has no reflexive pronoun, but its French equivalent, je me réveille, does. Dropping the me/te/se is a very common oversight, especially in daily-routine vocabulary.

Skipping the Subjunctive When It’s Required

English rarely uses a distinct subjunctive form, so English speakers tend to default to the indicative in French even after triggers like il faut que or bien que that grammatically require the subjunctive. It’s less about memorizing every subjunctive verb form and more about training your ear to recognize the trigger phrases.

Adjective Placement (Before or After the Noun)

Most French adjectives follow the noun (une voiture rouge), which is the reverse of English word order. A short list of common adjectives — like beau, grand, petit, and bon — actually come before the noun, and a few even change meaning depending on their position (un homme grand vs. un grand homme).

Double Negatives Structure (ne…pas)

French negation wraps around the verb rather than sitting before it, so English speakers frequently forget the ne half of the structure in writing, or misplace it with compound tenses and object pronouns. Reading negative sentences aloud slowly is one of the fastest ways to fix this by ear.

How to Fix These Mistakes for Good

• Learn every noun with its article, not as a standalone word.
• Keep a running list of verb + preposition pairs as you encounter them, instead of relying on English logic.
• Practice reading sentences aloud — gender and preposition errors are far easier to hear than to see.
• Get regular, corrected speaking practice rather than only self-study, since these are the mistakes that fossilize fastest without feedback.

If you’d like a more structured breakdown of gender rules by noun ending, this collection of French gender lessons is a solid free reference to work through alongside your regular practice.

Final Thoughts

Gender agreement and prepositions won’t fix themselves through passive exposure — they need targeted correction, ideally from a teacher who can catch the pattern before it becomes a habit. Our Grammar Vault course is built specifically around problem areas like these, and if you’re not sure where your French currently stands, you can start with a free placement test. And once you’ve got gender and prepositions under control, our piece on si clauses and conditional sentences is a natural next stop.