French Lesson: Expressing 'Unless' with 'à moins que' + Subjunctive
Learn to express negative conditions in French using 'à moins que' + subjunctive, meaning 'unless' or 'if not'. Includes pronunciation, examples, and practice.
By TheaFirst conversations · Yapr Learn
In French, to express a condition that must not happen for something else to occur—equivalent to English 'unless'—you use 'à moins que' followed by the subjunctive mood. This structure focuses on a negative condition, unlike 'si' clauses which state a positive condition. For example, 'Je n'irai pas à moins que tu viennes' means 'I won't go unless you come.' This lesson teaches you to form and use this essential pattern.
By the end, you can…
- form sentences with 'à moins que' + subjunctive to mean 'unless'.
- distinguish between 'si' clauses and 'à moins que' clauses.
- use common subjunctive endings for regular verbs after 'à moins que'.
Listen once. Try it slowly. Then say it without looking.
Checking available voices…
Je n'irai pas à moins que tu viennes.
I won't go unless you come.
zhuh nee-reh pah ah mwan kuh tew vyehn
Standard negation with 'ne... pas' around the future tense, followed by 'à moins que' + subjunctive of 'venir'.
Nous sortirons à moins qu'il ne pleuve.
We will go out unless it rains.
noo sor-tee-ron ah mwan keel nuh pluhv
The 'ne' after 'à moins que' is optional in spoken French but common in formal writing. 'Pleuve' is subjunctive of 'pleuvoir'.
Tu réussiras à moins que tu ne travailles.
You will succeed unless you work.
tew ray-oo-see-rah ah mwan kuh tew nuh trah-vahy
The 'ne' here is the optional expletive 'ne' after 'à moins que', not a negation. Adding 'pas' would reverse the meaning, so 'à moins que tu ne travailles pas' is not used to mean 'unless you work'.
Elle viendra à moins qu'elle soit malade.
She will come unless she is sick.
el vyehn-drah ah mwan kel swah mah-lad
Subjunctive of 'être' is 'soit'. No 'ne' because the verb is not negated.
À moins que vous ne partiez maintenant, vous serez en retard.
Unless you leave now, you will be late.
ah mwan kuh voo nuh par-tyay man-tuh-nan, voo suh-reh ahn ruh-tar
The 'ne' is optional but adds formality. 'Partiez' is subjunctive of 'partir'.
Pronunciation guides are approximate. Slow playback keeps the original pitch.
Make it make sense
Useful pattern
The pattern is: [main clause] + 'à moins que' + [subject] + (optional 'ne') + [verb in subjunctive]. The subjunctive is required because 'à moins que' introduces a hypothetical exception that is not yet realized. For regular -er verbs, subjunctive endings are: -e, -es, -e, -ions, -iez, -ent. Example: 'Je viendrai à moins qu'il ne fasse mauvais.' (I will come unless the weather is bad.) Note that 'faire' has the irregular subjunctive 'fasse'. The optional 'ne' is an expletive: it does not make the clause negative, and it is never paired with 'pas' in this structure.
When to use it
Use 'à moins que' when you want to say that something will happen if a certain negative condition does not occur. It is more formal than 'si... ne... pas', but both are correct. For instance, 'Je ne sortirai pas s'il ne fait pas beau' is equivalent to 'Je ne sortirai pas à moins qu'il fasse beau.' The 'à moins que' version emphasizes the exception. In everyday speech, 'à moins que' is common, but the optional 'ne' is often dropped: 'à moins qu'il fasse beau' rather than 'à moins qu'il ne fasse beau'.
Listen to each line, then take one part and reply out loud.
Tu viens à la fête ce soir ?
Are you coming to the party tonight?tew vyahn ah lah fet suh swarJe viendrai à moins que je ne sois trop fatigué.
I will come unless I am too tired.zhuh vyehn-reh ah mwan kuh zhuh nuh swah troh fah-tee-gayD'accord. Et si tu ne viens pas, préviens-moi.
Okay. And if you don't come, let me know.da-kor. eh see tew nuh vyahn pah, pray-vyahn mwaPas de problème. À moins que mon patron m'appelle, je serai là.
No problem. Unless my boss calls me, I'll be there.pah duh pro-blem. ah mwan kuh mon pah-tron mah-pel, zhuh suh-reh lahA little context goes a long way
In French, 'à moins que' is used in both spoken and written registers, but the optional 'ne' is more frequent in formal writing. In casual conversation, many speakers drop 'ne' entirely. The subjunctive after 'à moins que' is standard in all French-speaking regions, including Quebec, though everyday pronunciation varies locally. Always use the subjunctive after 'à moins que', regardless of region.
One thing to watch for
Using the indicative instead of the subjunctive after 'à moins que', as in 'à moins que tu viens'.
Try this instead: The subjunctive is required: 'à moins que tu viennes'. This applies to all verbs. For example, 'à moins qu'il fait beau' is incorrect; say 'à moins qu'il fasse beau'.
Your turn
Try answering out loud before checking a possible answer.
1Translate: 'We will leave unless it snows.'
Show a sample answer
Nous partirons à moins qu'il neige.
'Partirons' is future; 'neige' is subjunctive of 'neiger'. The optional 'ne' can be added: 'à moins qu'il ne neige'.
2Fill in the blank with the correct subjunctive form: 'Je serai là à moins que je ______ (avoir) un empêchement.'
Show a sample answer
aie
The subjunctive of 'avoir' for 'je' is 'aie'. So: 'à moins que j'aie un empêchement'.
3What is the difference between 'Si tu viens, je sortirai' and 'Je sortirai à moins que tu ne viennes'?
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The first means 'If you come, I will go out' (positive condition). The second means 'I will go out unless you come' (negative condition).
'Si' introduces a condition that must be met; 'à moins que' introduces an exception that would prevent the action.
Use 'à moins que' + subjunctive to express 'unless' in French. Remember the subjunctive endings and optional 'ne'. Practice with common verbs to master this structure.
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