Conditionnel: 'Tant que' (Durée & Condition)
condition, durée, préalable !
Grammar Rule in 30 Seconds
'As long as' sets a condition that must remain true for a specific result to continue happening.
- Use it to mean 'if' or 'provided that' with an emphasis on duration: 'As long as you stay, I'm happy.'
- Do not use 'will' immediately after 'as long as' for future conditions: 'As long as it rains (not will rain).'
- Use 'so long as' for a slightly more formal or emphatic tone in professional writing.
Overview
as long as est l'un de ces outils de précision. Bien plus qu'un simple synonyme de if, elle agit comme un pont entre la condition pure et la durée temporelle.As long as établit un prérequis qui doit être rempli de manière continue pour qu'une situation reste valide. C'est l'expression de la dépendance dynamique : tant que la condition A perdure, la conséquence B reste vraie. Dès que A s'arrête, B s'écroule.How This Grammar Works
As long as fonctionne comme une conjonction de subordination. Elle relie une proposition subordonnée (la condition ou la durée) à une proposition principale (le résultat ou la situation en cours). Sa particularité, c'est ce qu'on appelle la conditionnalité temporelle.as long as capture exactement cette double essence :- 1La condition : Il faut qu'il pleuve pour que je reste.
- 2La durée : Ma présence est liée à la durée de l'averse.
as long as est de définir une frontière temporelle à l'intérieur de laquelle la proposition principale est vraie. Imagine un contrat invisible : la clause principale n'est active que si la clause subordonnée est « allumée ».You can access the secure data as long as your security clearance is active.as long as your security clearance is active n'est pas juste une condition de départ (comme un simple if), c'est une condition de maintien. Si ton habilitation expire à 14h00, ton accès s'arrête à 14h00 pile. C'est cette notion de continuité qui fait la force de cette structure.Formation Pattern
as long as suit des règles de concordance des temps très précises, similaires à celles du First Conditional (le premier conditionnel avec if). C'est ici que réside le plus grand défi pour nous, les francophones.
as long as + Subordinate Clause : I will help you as long as you listen. (Pas de virgule ici).
As long as + Subordinate Clause + , + Main Clause : As long as you listen, I will help you. (La virgule est obligatoire quand on commence par la condition).
as long as, on utilise le Present Simple pour exprimer une condition future. Le futur (will) est réservé à la proposition principale.
as long as (Subordonnée) | Clause Principale (Conséquence) |
will) ou Modaux (can, may) |
would |
As long as the weather stays (présent) fine, we will go (futur) hiking. (Tant que le temps restera beau...)
As long as you heat ice, it melts. (Tant qu'on chauffe la glace, elle fond.)
He was happy as long as he lived in Paris. (Il était heureux tant qu'il vivait à Paris.)
As long as the engine is making that noise, don't drive the car. (Tant que le moteur fait ce bruit-là, ne conduis pas.)
When To Use It
As long as est polyvalent, mais il brille particulièrement dans des contextes où la précision est de mise. Voici les scénarios types pour un locuteur de niveau C1 :- Établir des prérequis indispensables :
You can stay in this position as long as you meet your monthly targets. (Ton maintien au poste est lié à tes résultats.)- Définir la durée d'une situation :
As long as I am the CEO, we will prioritize sustainability. (Pendant toute la durée de mon mandat...)- Donner une permission avec une réserve stricte :
You may borrow my car as long as you bring it back with a full tank. (Je te prête ma voiture, à la condition constante que tu la rendes avec le plein.)- Exprimer des principes ou des vérités logiques :
As long as there is injustice, there will be resistance. (Tant qu'il y aura de l'injustice...)- Négociations et accords informels :
I'm happy to host the dinner as long as everyone chips in for groceries. (Je veux bien recevoir, mais seulement si tout le monde participe aux frais.)Common Mistakes
as soon asAs soon as= Dès que (ponctuel, immédiat).As long as= Tant que (durée, continu).
*As long as I arrive, I will call you.* (Faux : cela voudrait dire que tu m'appelleras continuellement pendant que tu arrives).As soon as I arrive, I will call you.as long as*As long as you will want*.*As long as it will rain, we will stay inside.*As long as it rains, we will stay inside.ifAs long as est plus fort et plus spécifique que if. Si tu l'utilises pour tout, ton anglais paraîtra trop lourd.*As long as you want a coffee, I can make one.* (Ici, if est bien mieux car il n'y a pas de notion de durée ou de condition stricte).as long as quand tu pourrais dire « seulement si et pendant tout le temps que ».whileWhile exprime la simultanéité pure, sans forcément de conditionnalité.While I was cooking, he was reading.(Pas de condition, juste deux actions en même temps).As long as I am cooking, you must stay in the living room.(Ici, le fait que tu restes au salon est conditionné par ma cuisine).
Contrast With Similar Patterns
as long as | Neutre | Condition + Durée | Tant que / À condition que |so long as | Un peu plus formel | Identique à as long as | Tant que |provided (that) | Formel / Contractuel | Condition stricte, peu de durée | Pourvu que / Sous réserve de |on condition that | Très formel | Stipulation légale ou ferme | À la condition que |if | Neutre | Condition simple | Si |unless | Neutre | Condition négative | À moins que |provided that vs as long as :We will ship the goods provided that the payment is received. (C'est une condition ponctuelle et formelle).I can help you with the report as long as I don't have to stay late. (C'est plus fluide, plus axé sur la durée de ton aide).so long as :so long as. Historiquement, il y avait une petite différence, mais aujourd'hui, ils sont interchangeables. So long as est simplement perçu comme légèrement plus emphatique ou littéraire. Dans le doute, utilise as long as.Quick FAQ
as long as au négatif ?As long as you don't break anything, you can play here. (Tant que tu ne casses rien...). C'est une structure très courante pour poser des limites négatives.as long as et until ?As long asse concentre sur la période de validité (le « pendant »).Untilse concentre sur le moment où ça s'arrête (le « jusqu'à »).
I will stay as long as you need me. (Je reste tant que tu as besoin de moi).I will stay until you tell me to leave. (Je reste jusqu'à ce que tu me dises de partir).as long as peut signifier « aussi long que » au sens physique ?The table is as long as the sofa. (La table est aussi longue que le canapé).providing that ?Providing that est une variante de provided that. C'est très formel. Si tu écris un essai académique ou un contrat, c'est un excellent choix. Pour une présentation orale ou un e-mail courant, as long as reste le roi.As long as I study (présent), I will succeed (futur). Si tu maîtrises ce réflexe, tu auras gommé l'une des marques les plus visibles de l'accent grammatical français.Structure of 'As Long As' Clauses
| Clause Type | Tense Used | Example | Meaning |
|---|---|---|---|
|
Main Clause (Future)
|
Future (will)
|
I will help you...
|
The result
|
|
Conditional Clause
|
Present Simple
|
...as long as you ask.
|
The requirement
|
|
Main Clause (Present)
|
Present Simple
|
It works...
|
General truth
|
|
Conditional Clause
|
Present Simple
|
...as long as you plug it in.
|
General condition
|
|
Main Clause (Past)
|
Past Simple
|
He stayed...
|
Past duration
|
|
Conditional Clause
|
Past Simple
|
...as long as he could.
|
Past limit
|
Meanings
A conjunction used to express that one thing will happen only if another thing happens or continues to be true.
Pure Condition
Equivalent to 'if' or 'on the condition that'.
“As long as you're happy, I'm happy.”
“We can go outside as long as it doesn't rain.”
Duration-Based Condition
Emphasizing the length of time a condition remains valid.
“I will remember this day as long as I live.”
“The battery will last as long as you don't use the flashlight.”
Formal Proviso
Used in legal or professional contexts to state requirements.
“The contract is valid as long as both parties adhere to the terms.”
“You may remain in the country as long as your visa is valid.”
Reference Table
| Fonction | Structure | Exemple | Nuance |
|---|---|---|---|
|
Poser des conditions
|
Main Clause + `as long as` + Present Simple
|
You can go `as long as` you finish your homework.
|
Seulement si ; à condition que
|
|
Exprimer une durée
|
Main Clause + `as long as` + Present Simple/Continuous
|
We'll be fine `as long as` the internet works.
|
Pendant toute la durée où
|
|
Donner des permissions
|
`As long as` + Present Simple + , + Main Clause
|
`As long as` you pay, you can use my account.
|
À la seule condition que
|
|
Vérités générales
|
Main Clause + `as long as` + Present Simple
|
She's happy `as long as` she has coffee.
|
Dans ces circonstances
|
Spectre de formalité
You may remain on the premises so long as you adhere to the safety protocols. (Security/Social)
You can stay here as long as you follow the rules. (Security/Social)
You can hang out as long as you're cool. (Security/Social)
You're good to chill here as long as you don't act up. (Security/Social)
As Long As : Carte Conceptuelle
Fonction
- Condition Seulement si
- Duration Pendant toute la durée où
- Permission Accordé sous condition
Structure
- Clause Order Ordre des clauses
- Tense (Future) Temps (Futur)
- Present Simple in 'As Long As' clause Présent simple dans la clause 'As Long As'
- Comma Use Utilisation de la virgule
- After 'As Long As' when starting sentence Après 'As Long As' en début de phrase
Similaire à
- Provided that Condition plus formelle
- So long as Interchangeable
Éviter la confusion
- As soon as Fait référence à l'immédiateté
- If (basic) Manque de durée/condition forte
As Long As vs. Autres Conditionnels
Quand utiliser 'As Long As'
Énonces-tu une condition qui doit être remplie ?
Cette condition implique-t-elle aussi une durée (pendant toute la durée où) ?
La condition concerne-t-elle un événement futur ?
Situations pour 'As Long As'
Permissions
- • Emprunter une voiture
- • Rejoindre un jeu
- • Utiliser une ressource
Promesses / Accords
- • Soutenir une décision
- • Prêter de l'argent
- • Couvrir des dépenses
Situations continues
- • Validité d'abonnement
- • Travailler à distance
- • Rester quelque part
Conseils / Avertissements
- • Assiduité à l'étude
- • Conduire prudemment
- • Manger sainement
Exemples par niveau
You can eat as long as you wash your hands.
You can eat if you wash your hands.
I am happy as long as you are happy.
I am happy if you are happy.
We can play as long as it is sunny.
We can play if it is sunny.
You can stay as long as you like.
You can stay for the time you want.
I will help you as long as you try your best.
I will help you on the condition that you try.
As long as he works hard, he will pass.
If he works hard, he will pass.
You can watch TV as long as you finish your homework.
You can watch TV if you finish homework.
The dog is good as long as he has a bone.
The dog is good while he has a bone.
You can borrow the car as long as you fill the tank.
I'll lend the car provided you buy gas.
As long as there is coffee, I can keep working.
I can work if I have coffee.
We'll go to the beach as long as the weather stays warm.
We will go if the weather remains warm.
I don't mind the noise as long as I can sleep.
The noise is okay if I can still sleep.
So long as the economy remains stable, we will invest.
Provided the economy is stable, we will invest.
You can take the day off as long as your work is completed.
You have permission if your work is done.
As long as you don't mention the surprise, everything will be fine.
If you keep the secret, it will be okay.
He will be successful as long as he maintains his focus.
Success depends on his continued focus.
The ceasefire will hold as long as neither side violates the border.
The peace depends on both sides respecting the border.
As long as the fundamental assumptions are correct, the theory stands.
The theory is valid provided the assumptions are true.
You may retain the documents as long as they are kept in a secure location.
Possession is conditional on security.
As long as we are being honest, I never liked the proposal anyway.
Since we are speaking truthfully...
The monarchy's relevance persists only as long as it adapts to modern sensibilities.
Survival depends on adaptation.
As long as there is a shred of evidence, the investigators will not rest.
They will continue while evidence exists.
The contract remains enforceable so long as the 'force majeure' clause is not invoked.
Legal validity depends on specific conditions.
As long as we're on the subject, could you clarify your earlier point?
While we are discussing this...
Facile à confondre
Learners use 'as long as' to mean the end of a period.
Both involve time, but 'while' is purely temporal.
Erreurs courantes
I stay as long as you stay.
I will stay as long as you stay.
As long as it will rain, we stay home.
As long as it rains, we stay home.
I'll wait as long as he comes.
I'll wait until he comes.
The contract is valid as long as you will pay.
The contract is valid as long as you pay.
Structures de phrases
I don't mind ___, as long as ___.
As long as ___, the ___ will ___.
Real World Usage
I am willing to travel as long as the expenses are covered.
You can go out as long as you're home by ten.
This license is free as long as it is for non-commercial use.
The tour is on as long as we have at least five people.
I'll love you as long as I live.
We have a chance as long as the clock is running.
Pense "Seulement si" ou "À condition que"
as long as est le bon choix, essaie de le remplacer mentalement par only if ou provided that. Si la phrase a toujours du sens et exprime la bonne nuance, tu es sur la bonne voie ! You can use my car only if you fill up the tank.
Pas de futur après "as long as"
as long as. Le futur, c'est pour la conséquence principale, pas la condition. "You'll pass as long as you study. (Pas as long as you will study.")Varie avec "so long as"
as long as par so long as. Ils ont le même sens et offrent une petite touche stylistique différente, surtout dans un cadre informel. You can come so long as you bring snacks.
Idéal pour les négociations
As long as est très utilisé dans les cultures anglophones pour poser des limites claires ou des conditions lors de négociations. Que ce soit pour une offre d'emploi ou juste pour décider qui paie le café ! "I'll help you as long as you help me too."Durée ET condition
Smart Tips
Swap 'as long as' for 'provided that' to instantly increase the professional tone.
Check if you can replace 'as long as' with 'if'. If you can, the 'no will' rule definitely applies.
Use 'as long as' for the condition and 'until' for the deadline to show you understand the difference.
Shorten the phrase to 'As long as...' when answering a question to sound more natural.
Prononciation
Linking 'As long as'
The three words are usually spoken as one unit /əzˈlɒŋəz/ with the 's' in 'as' sounding like a 'z' and linking to 'long'.
Conditional Rise
As long as you're READY (rise), we can GO (fall).
The rise on the condition shows it is not yet finished.
Mémorise-le
Moyen mnémotechnique
Think of 'As Long As' as a 'Long Bridge': the bridge (result) only stands while the supports (condition) are there.
Association visuelle
Imagine a battery icon that stays green only while a charger is plugged in. The 'charger' is the condition, and the 'green light' is the result.
Rhyme
As long as you stay, I'll find a way; but if you go, the answer is no.
Story
A king tells his knight, 'You may keep this sword as long as you protect the realm.' The knight keeps the sword for 20 years because he never stops protecting the realm. The moment he stops, the sword is taken.
Word Web
Défi
Write three sentences about your dream job using 'as long as' to describe the conditions (e.g., salary, hours, location).
Notes culturelles
'So long as' is much more common in the UK than in the US, where 'as long as' dominates.
In US contracts, 'as long as' is often replaced by 'provided that' to sound more authoritative.
This structure is central to the 'individualist' contract culture, where relationships are often based on specific conditions.
Derived from Old English 'swa lange swa'.
Amorces de conversation
How long would you stay at a job you didn't like?
What are the conditions for a perfect friendship?
In your opinion, as long as someone is happy, does it matter what they do?
Sujets d'écriture
Erreurs courantes
Test Yourself
We can stay out late ___ you call your parents.
Find and fix the mistake:
You will get a promotion as long as you will work hard.
Arrange the words in the correct order:
All words placed
Click words above to build the sentence
Score: /3
Exercices pratiques
8 exercisesI will stay here as long as it ___ (be) necessary.
You can borrow my bike ___ you bring it back by noon.
Find and fix the mistake:
As long as you will keep practicing, you will improve.
If you don't make a mess, you can cook here.
'So long as' is generally more informal than 'as long as'.
A: Can I join the club? B: Yes, ___ you pay the fee.
Select the correct sentence.
1. As long as it's free... 2. As long as you're ready... 3. As long as he's quiet...
Score: /8
Practice Bank
12 exercisesThe concert will continue ___ the rain holds off.
I can join the meeting as soon as you share the agenda.
Choose the correct sentence:
Translate into English: 'Estaré bien siempre y cuando tenga mi pasaporte.'
Arrange these words into a sentence:
Match the subjects with the correct form:
I don't mind what we eat ___ it's not too spicy.
As long as he doesn't forget, he will bring the drinks.
Which sentence is correct?
Translate into English: 'Podemos ir a la playa siempre y cuando no llueva.'
Arrange these words into a sentence:
Match the conditions with their outcomes:
Score: /12
FAQ (8)
Yes, you can use it to describe past conditions: 'He was happy as long as he had his dog.' Both verbs should be in the past tense.
'So long as' is slightly more formal and more common in British English. In most cases, they are interchangeable.
Almost, but 'as long as' emphasizes that the result continues only while the condition is met. 'If' is more general.
Yes! Just remember to put a comma after the first clause: 'As long as you are here, I am safe.'
This is a rule for all time and conditional clauses in English (like 'when', 'if', 'after'). We use the present to represent the future.
No, it often refers to a logical condition. 'As long as you have a ticket, you can enter' isn't about time, it's about the requirement.
Yes, 'provided that' or 'providing that' sounds more professional in contracts and formal emails.
Yes: 'Will you still love me as long as I'm poor?' It asks if the condition affects the result.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
siempre que / mientras
English uses indicative present; Spanish uses subjunctive.
tant que
Tense choice (Future in French vs Present in English).
solange
Word order (Verb-final in German).
〜限り (~kagiri)
Japanese places the conjunction at the end of the clause.
طالما (taalama)
Arabic is often followed by a past tense verb to indicate a standing condition.
只要 (zhǐyào)
Chinese lacks the 'duration' etymology found in English.
Learning Path
Prerequisites
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As long as, so long as, provided that, providing that
AnglaisCours
As long as / so long as / provided that / providing that / on condition that
AnglaisFacile
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