Conditionnel Zéro: Vérités Générales (If vs. When)
vérités universelles, pense à
if pour une possibilité générale, et when pour quelque chose de régulier et attendu.
Grammar Rule in 30 Seconds
Use the Zero Conditional to talk about things that are always true, like scientific facts or personal habits.
- Use Present Simple in both clauses for facts: 'If you heat ice, it melts.'
- Use 'When' instead of 'If' when the situation is certain to happen.
- Never use 'will' in either part of a Zero Conditional sentence.
Overview
if et when ? C'est parce qu'ils sont les briques de base de la façon dont nous parlons des règles du monde. Considérez le Zero Conditional comme la 'physique' de la langue.How This Grammar Works
Formation Pattern
will ou would ici.
If + you heat ice (Present Simple), it melts (Present Simple).
When To Use It
- Faits scientifiques : Ce sont les grandes vérités. 'Si vous mélangez le rouge et le bleu, vous obtenez du violet.' C'est de la science, on ne peut pas le nier !
- Habitudes personnelles : Utilisez-le pour décrire votre propre 'programmation'. 'Quand je me réveille, je regarde mon Instagram.' C'est une routine récurrente qui est toujours vraie pour vous.
- Instructions et règles : Pensez aux paramètres d'applications ou aux règles de jeu. 'Si vous appuyez deux fois sur l'écran, la vidéo se met en pause.' Ou 'Quand le feu passe au rouge, vous vous arrêtez.'
- Vérités générales : Des choses qui sont généralement acceptées comme vraies dans la société. 'Si vous avez un travail, vous payez des impôts.' (Malheureusement, celui-là est bien réel).
Common Mistakes
- Ajouter 'Will' : C'est le plus courant ! Les gens disent souvent : 'If it rains, the grass will get wet.' C'est en fait un First Conditional (une prédiction). Pour un Zero Conditional (un fait général), dites simplement : 'If it rains, the grass gets wet.'
- Oublier le '-s' : N'oubliez pas la troisième personne du singulier ! 'S'il *mange* des cacahuètes, il *tombe* malade.' Ne laissez pas ces petites lettres s'échapper.
- Confondre 'If' et 'When' : Bien qu'ils soient souvent interchangeables, 'when' implique que quelque chose arrive plus fréquemment ou est plus certain que 'if'.
- Surcompliquer le temps : Vous n'avez pas besoin de 'is going to' ou 'would'. Restez simple, restez au présent !
Contrast With Similar Patterns
- Zero Conditional : (If + Present, Present) = Vérités générales/Habitudes. 'If I drink coffee, I stay awake.' (Cela arrive à chaque fois).
- First Conditional : (If + Present, Will + Verb) = Prédictions futures spécifiques. 'If I drink this coffee now, I will stay awake tonight.' (Il s'agit d'une tasse de café spécifique).
Quick FAQ
R: Absolument ! 'Whenever' ajoute juste un peu plus d'insistance sur la fréquence. 'Chaque fois que je vois un chat, j'essaie de le caresser.'
R: Oui ! C'est très courant pour les instructions. 'Si tu es perdu, appelle-moi.'
R: Non, le sens reste le même que vous mettiez la partie 'if' au début ou à la fin. Rappelez-vous simplement de la règle de la virgule !
R: Pas vraiment. Le Zero Conditional concerne des choses qui sont *généralement* vraies au fil du temps. Pour les habitudes passées, nous utilisons généralement 'used to' oder le Past Simple.
Zero Conditional Structure
| Clause Type | Conjunction | Subject | Verb Tense | Example |
|---|---|---|---|---|
|
Condition
|
If / When
|
I / You / We / They
|
Present Simple
|
If you heat ice
|
|
Result
|
(comma)
|
It
|
Present Simple
|
it melts
|
|
Negative Condition
|
If
|
He / She / It
|
Does not + Verb
|
If she doesn't study
|
|
Negative Result
|
(comma)
|
She
|
Does not + Verb
|
she fails
|
|
Question
|
Do / Does
|
Subject
|
Verb... if clause
|
Do you cry if you are sad?
|
Common Contractions in Zero Conditional
| Full Form | Contraction | Usage Example |
|---|---|---|
|
do not
|
don't
|
If you don't go, I don't go.
|
|
does not
|
doesn't
|
If it doesn't rain, the grass dies.
|
|
I am
|
I'm
|
If I'm late, they start without me.
|
|
it is
|
it's
|
If it's cold, I wear a coat.
|
Meanings
A sentence structure used to express general truths, scientific facts, and situations where one action always causes another.
Scientific Facts
Describing laws of nature or universal truths that never change.
“If water reaches 100 degrees, it boils.”
“If you drop an object, it falls to the ground.”
Personal Habits & Routines
Describing things you consistently do in response to a specific trigger.
“If I wake up late, I skip breakfast.”
“When I feel stressed, I go for a run.”
Instructions & Rules
Giving commands or explaining how a system works.
“If the light turns red, stop the car.”
“When the bell rings, the lesson ends.”
Reference Table
| Type de Conditionnel | Structure | But | Exemple |
|---|---|---|---|
|
Zero Conditional
|
If/When + Simple Present, Simple Present
|
Faits universels, vérités générales
|
If you freeze water, it turns to ice.
|
|
Zero Conditional (reversed)
|
Simple Present if/when Simple Present
|
Faits universels, vérités générales
|
Water turns to ice if you freeze it.
|
|
When (certainty)
|
When + Simple Present, Simple Present
|
Événement attendu et régulier
|
When I wake up early, I feel energized.
|
|
If (possibility/choice)
|
If + Simple Present, Simple Present
|
Condition possible mais résultat certain
|
If you eat too much, you feel sick.
|
|
Common Mistake
|
If + Simple Present, WILL + Verb
|
Prédiction future (Premier Conditionnel)
|
If you heat ice, it *will* melt. (Incorrect)
|
|
Correct Form
|
If + Simple Present, Simple Present
|
Résultat toujours vrai
|
If you heat ice, it *melts*. (Correct)
|
Spectre de formalité
If an employee arrives after 9:00 AM, the tardiness is recorded. (Workplace policy)
If you are late for work, you get in trouble. (Workplace policy)
If you're late, the boss gets mad. (Workplace policy)
If you show up late, you're toast. (Workplace policy)
Zéro Conditionnel : Vérités Générales
Structure
- If/When + Simple Present Clause de Condition
- Simple Present Clause de Résultat
Fonction
- Scientific Facts Ex : L'eau gèle
- General Observations Ex : Les gens se fatiguent
- Irrefutable Truths Ex : Le soleil se lève
If vs When
- If Possibilité générale, choix
- When Régularité attendue, certitude
Comparaison If vs. When dans le Zéro Conditionnel
Organigramme Décisionnel du Zéro Conditionnel
L'affirmation concerne-t-elle un fait universel ou est-elle toujours vraie ?
La condition est-elle attendue ou une occurrence régulière ?
Les deux clauses sont-elles au simple présent ?
Scénarios du Zéro Conditionnel
Faits Scientifiques
- • If you heat ice, it melts.
- • When water boils, it produces steam.
Observations Générales
- • If people don't eat, they get hungry.
- • When I'm tired, I make mistakes.
Vérités/Habitudes Personnelles
- • If my phone battery dies, I feel disconnected.
- • When my alarm rings, I get up.
Règles Procédurales
- • If you press 'undo', the last action reverses.
- • When you save, changes apply.
Exemples par niveau
If I am tired, I sleep.
If I am tired, I sleep.
If you heat water, it is hot.
If you heat water, it is hot.
When it rains, I stay home.
When it rains, I stay home.
If I see her, I say hello.
If I see her, I say hello.
If you don't eat, you get hungry.
If you don't eat, you get hungry.
When the sun goes down, it gets dark.
When the sun goes down, it gets dark.
If you press this button, the light turns on.
If you press this button, the light turns on.
Does it work if you plug it in?
Does it work if you plug it in?
If you mix oil and water, they don't stay together.
If you mix oil and water, they don't stay together.
When I drink coffee late at night, I can't sleep.
When I drink coffee late at night, I can't sleep.
If a customer complains, we offer a refund.
If a customer complains, we offer a refund.
Unless it rains, I walk to work every day.
Unless it rains, I walk to work every day.
If the temperature drops below zero, water freezes.
If the temperature drops below zero, water freezes.
When people exercise regularly, they feel better.
When people exercise regularly, they feel better.
If the economy slows down, unemployment usually rises.
If the economy slows down, unemployment usually rises.
If you don't have a password, you can't access the file.
If you don't have a password, you can't access the file.
If one ignores the symptoms, the condition worsens.
If one ignores the symptoms, the condition worsens.
Whenever the government raises taxes, there is public outcry.
Whenever the government raises taxes, there is public outcry.
If a contract contains an error, it is legally void.
If a contract contains an error, it is legally void.
When a species loses its habitat, it faces extinction.
When a species loses its habitat, it faces extinction.
If power corrupts, absolute power corrupts absolutely.
If power corrupts, absolute power corrupts absolutely.
When the market reaches saturation, innovation becomes the only path to growth.
When the market reaches saturation, innovation becomes the only path to growth.
If a theory fails to account for new data, it is eventually discarded.
If a theory fails to account for new data, it is eventually discarded.
Whenever the artist revisits this theme, the tone remains somber.
Whenever the artist revisits this theme, the tone remains somber.
Facile à confondre
Learners use 'will' in Zero Conditional or vice versa. They think all 'if' sentences need 'will'.
Using 'if' for things that are 100% certain to happen (like the sun rising).
Learners forget that 'unless' means 'if... not'.
Erreurs courantes
If it rain, the grass get wet.
If it rains, the grass gets wet.
If I am hungry I eat.
If I am hungry, I eat.
If you heat ice, it will melt.
If you heat ice, it melts.
When I wake up, I am drinking coffee.
When I wake up, I drink coffee.
If you don't study, you will fail.
If you don't study, you fail.
Does the water boil if you heated it?
Does the water boil if you heat it?
If it is raining, I take an umbrella.
If it rains, I take an umbrella.
If you will mix red and blue, you get purple.
If you mix red and blue, you get purple.
Unless you don't eat, you stay healthy.
Unless you eat, you stay healthy.
When I am seeing him, I feel happy.
When I see him, I feel happy.
If the law will be broken, there is a penalty.
If the law is broken, there is a penalty.
Provided that it will rain, the crops grow.
Provided that it rains, the crops grow.
If one would be late, one is punished.
If one is late, one is punished.
Structures de phrases
If you ___, you ___.
When it ___, I ___.
___ if you ___.
Whenever ___, ___.
Real World Usage
If the pressure increases, the volume decreases.
If the sauce gets too thick, add a splash of water.
If the red light blinks, replace the battery.
If you work on a holiday, you receive double pay.
If I'm late, just start the movie without me.
If you use the weights, put them back after.
If you don't finish your vegetables, you don't get dessert.
Pense « Toujours Vrai »
If you touch fire, you get burned.
Attention à « Will »
If you heat ice, it melts.
Nuance entre If et When
If I eat too much, I feel sick.vs
When I wake up early, I feel energized.
Acceptation Universelle
Placement de la Virgule
If/When clause, main clause. Pas de virgule : Main clause if/when clause. C'est un petit détail, mais ça rend ton écrit plus soigné. If you study hard, you pass.
Smart Tips
Check that both verbs are in the Present Simple. If you see a 'will', delete it!
Use the 'If + Present Simple, Imperative' pattern for clarity.
Swap 'if' for 'when' to sound more natural.
Use 'whenever' instead of 'if' to emphasize that the rule applies every single time.
Prononciation
The Comma Pause
When the 'if' clause comes first, there is a slight rising intonation at the end of the clause, followed by a brief pause.
Contraction Stress
In 'don't' or 'doesn't', the 't' is often unreleased (stopped), but the vowel is stressed to show negation.
Conditional Rise-Fall
If you heat ice ↗, it melts ↘.
The rise indicates the condition is being set; the fall indicates the certain result.
Mémorise-le
Moyen mnémotechnique
Zero is for Zero Doubt. If it's a fact, keep the tense intact (Present + Present).
Association visuelle
Imagine a light switch. If you flip the switch (Condition), the light turns on (Result). It happens every single time, without fail.
Rhyme
If the truth is what you say, keep the 'will' far away.
Story
A scientist is in a lab. He says: 'If I mix these, it explodes.' He doesn't say 'it will explode' because he has done it 1,000 times and it's a law of nature.
Word Web
Défi
Look around your room. Write 3 Zero Conditional sentences about how things work (e.g., 'If I press the power button, the TV turns on').
Notes culturelles
British speakers often use 'if' and 'when' interchangeably for habits, but may use 'should' in formal zero-like instructions (e.g., 'Should you require assistance, please ask').
Americans frequently use the Zero Conditional for 'tough love' advice or common sense rules.
In academic papers, the Zero Conditional is the standard for describing methodology and universal results, avoiding 'will' to maintain a timeless, objective tone.
The term 'Zero Conditional' was coined by grammarians in the 20th century to categorize conditional sentences by their degree of probability.
Amorces de conversation
What happens if you don't drink water for a whole day?
What do you usually do when you feel stressed?
Tell me about a rule in your country. What happens if someone breaks it?
If a person wants to be successful in your field, what do they need to do every day?
Sujets d'écriture
Erreurs courantes
Test Yourself
If you don't study, you ___ your exams.
Find and fix the mistake:
When it rains, the roads will get slippery.
Choose the correct sentence:
Translate into English: 'Si mezclas rojo y azul, obtienes morado.'
Answer starts with: ["I...
Score: /4
Exercices pratiques
8 exercisesIf you ___ (mix) red and white, you ___ (get) pink.
Choose the best option:
Find and fix the mistake:
Correct the sentence:
Rewrite:
We use the Zero Conditional to talk about a specific event in the future.
A: Does this machine work? B: Yes, if you ___ the green button, it ___.
Identify the outlier:
1. If you don't water plants... / 2. If you add sugar... / 3. If you exercise...
Score: /8
Practice Bank
10 exercisesWhen a baby is hungry, it often ___ (cry).
If you touch a hot stove, you will burn your hand.
Which of these is a correct Zero Conditional statement?
Translate into English: 'Si duermas poco, te sientes cansado.'
Arrange these words into a sentence:
Match the conditions with their usual results:
___ you press the 'enter' key, the command executes.
If an object is heavier, it falls faster.
Which sentence is a correct Zero Conditional statement?
Translate into English: 'Wenn man lange vor dem Bildschirm sitzt, tun die Augen weh.'
Score: /10
FAQ (8)
Generally, no. If you use `will`, it becomes a First Conditional, which is for specific future events. Zero Conditional is for things that are *always* true.
Use `if` for things that might happen (If it rains...). Use `when` for things you are sure will happen (When the sun sets...).
Only if the `if/when` clause comes first. If it comes second (e.g., 'Ice melts if you heat it'), no comma is needed.
Yes! This is very common for instructions. For example: 'If you are lost, look at the map.'
Yes. `Unless` means 'if not'. Example: 'Plants die unless you water them' is the same as 'Plants die if you don't water them.'
It is neutral. It is used in everything from casual texting to formal scientific journals.
No. If you use the past tense, it usually becomes a Second Conditional (imaginary) or a past habit. Zero Conditional strictly uses the Present Simple.
It's called 'Zero' because there is zero doubt about the result. It is a 100% certainty.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
Si + presente, presente
English is stricter about using Present Simple for general truths.
Si + présent, présent
French sometimes uses the future where English requires the present for generalities.
Wenn + Präsens, Präsens
German uses one word ('wenn') for both 'if' and 'when'.
~to (~と)
Japanese has multiple conditional forms (~tara, ~ba, ~to) while English uses one structure with different conjunctions.
Idha (إذا) + Present
Arabic verb aspects (perfective/imperfective) function differently than English tenses.
Ruguo (如果)... jiu (就)...
Lack of tense markers in Chinese makes the 'Present Simple' rule hard for learners to visualize.
Learning Path
Prerequisites
Vidéos associées
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