20 French Idioms for TEF Speaking Section B: Adding Native Flair

In the TEF Speaking Section B (The Persuasion Task), the examiner is looking for Spontaneity and Authenticity.

If you sound like a robot reading from a textbook, you will get a B2. If you sound like a natural speaker who knows how to use "Color" in their language, you will get a C1+. One of the fastest ways to signal this authenticity is through the correct use of Idioms.

At PrepMyFrench, we’ve selected 20 idioms that fit perfectly into the "Persuasion" context of Section B.

1. The "Starting the Conversation" Idioms

Use these to break the ice with your "friend" (the examiner).

1. "Ça te dirait de... ?" (Would you be up for...?) - Better than "Est-ce que tu veux... ?"
2. "J’ai déniché une perle rare." (I found a rare gem.) - Use this to describe the ad you are talking about.
3. "C’est une occasion à ne pas rater." (It’s an opportunity not to be missed.)

2. The "Overcoming Objections" Idioms

Use these when the examiner says "No." 4. "Ça ne mange pas de pain." (It doesn't hurt/it costs nothing to try.) 5. "Il ne faut pas pousser mémé dans les orties." (Don't exaggerate/don't push it.) - Use with caution/humor to show native-level comfort. 6. "C’est une pierre deux coups." (Kill two birds with one stone.) 7. "On ne va pas se mentir..." (Let's be honest...) - A great way to build rapport.

3. The "Value and Price" Idioms

When the examiner says "It’s too expensive." 8. "Ça coûte trois fois rien." (It costs next to nothing.) 9. "C’est donné !" (It’s a steal!) 10. "On en a pour son argent." (You get your money's worth.)

4. The "Motivation and Success" Idioms

When the examiner says "I'm too lazy/tired." 11. "Il faut battre le fer tant qu’il est chaud." (Strike while the iron is hot.) 12. "Mettre la main à la pâte." (To get involved/pitch in.) 13. "Prendre le taureau par les cornes." (Take the bull by the horns.)

5. How to Use Idioms Without Looking Like a Try-Hard

The key to idioms is Timing.

• Don't use 5 in a row. You will sound like a cartoon.
• Do use them to "soften" a rejection or to "intensify" a benefit.
• Always follow an idiom with a logical explanation. "C'est une pierre deux coups : on s'amuse et on apprend le français."

Conclusion: Color Your Language

The TEF Speaking exam isn't just about grammar; it's about Personality. These 20 idioms give you the "Native Flair" needed to charm the examiner and secure that NCLC 10.

Practice your idioms with our AI Speaking Examiner →