First and second conditionals
First et second conditional parlent tous deux du futur ; la différence tient au degré de probabilité que le locuteur accorde à l'événement. Ici tu revois les schémas if + present -> will et if + past -> would.
Apprentissage rapide
First et second conditional parlent tous deux du futur. La différence tient au degré de probabilité que le locuteur lui accorde.
À retenir
- First : if + present, puis will. Réel et probable.
- Second : if + past, puis would. Peu probable, imaginaire ou hypothétique.
- Le past du second conditional n'est pas un temps du passé ; il marque la distance avec la réalité.
Exemples
- 1If the train arrives on time tomorrow, we will reach the hotel before sunset.
- 2If I were you, I would speak directly to the manager about your concerns.
Piège courant à éviter
Dans le first conditional, will ne vient pas après if. Même si le sens est futur, la proposition en if reste au present.
Approfondir
La règle
Real or imagined
Conditional sentences evaluate the relationship between a condition and its consequence. At Level B1, learners must master the clear contrast between real/likely possibilities (First Conditional) and hypothetical/unreal situations (Second Conditional).
First conditional
(1) First Conditional (Real / Likely Future): Evaluates an authentic condition that has a realistic possibility of happening in the future. Formula: If + Present Simple, will / can / might + bare base verb.
- If the weather is sunny tomorrow, we will cycle to the beach
- If you study hard, you will pass the exam
The speaker considers the event entirely feasible.
Second conditional
(2) Second Conditional (Hypothetical / Unreal Present or Future): Evaluates an imaginary, counterfactual, or improbable scenario contrary to present reality. Formula: If + Past Simple, would / could / might + bare base verb.
- If I had more free time, I would learn how to play the cello
- If I won the lottery, I would buy a house near the coast
The past tense here does not express past time; it signifies hypothetical distance from reality.
If I were you
Were Rule in Second Conditional: In formal and standard English, the subjunctive were is used for all persons with be:
- If I were you, I would accept that job offer
- If she were here, she would know what to do
Anatomie de la phrase
Des phrases de cette leçon, découpées dans l'ordre qu'exige l'anglais.
PropositionIf the train arrives on time tomorrow,SujetweAuxiliairewillVerbereachObjetthe hotelTempsbefore sunset.
PropositionIf we had a spacious garden,SujetweAuxiliairewouldVerbeadoptObjettwo rescue dogsLieufrom the shelter.
PropositionIf I knew his personal telephone number,SujetIAuxiliairewouldVerbecallObjethimTempsimmediately.
Mot interrogatifWhatAuxiliairewouldSujetyouVerbedoPropositionif you found an expensive leather wallet on the sidewalk?
Guide visuel
How to read this B1 topic
At B1, grammar links ideas: condition, result, reported meaning, experience, and narrative order.
1. Name the relationship
Ask whether the sentence gives a condition, contrast, cause, report, or result.
If it rains, we will stay home.
2. Separate time from aspect
Finished event, visible result, duration, and background action use different forms.
I had left before she arrived.
3. Test both clauses
In complex sentences, the second half often proves the first half.
I wish I knew.
Conditional patterns
Read both halves. The result clause often tells you which condition pattern is needed.
| Meaning | If-clause | Result clause | Example |
|---|---|---|---|
| general truth | present simple | present simple | If water freezes, it expands. |
| real future | present simple | will + base verb | If it rains, we will stay. |
| imaginary present | past simple | would + base verb | If I knew, I would tell you. |
| imaginary past | past perfect | would have + participle | If I had known, I would have called. |
Contrasts that often decide the answer
Event or background
Simple forms move events forward; continuous forms show an action in progress.
I left while she was talking.
Fact or stance
Modals, hedges, and reporting structures show how certain or responsible the speaker sounds.
This may indicate a problem.
Clause or compressed phrase
Advanced writing often compresses full clauses into participle, noun, or prepositional phrases.
Having reviewed the data, we revised the plan.
Exemples
- 1If the train arrives on time tomorrow, we will reach the hotel before sunset.
- 2If I were you, I would speak directly to the manager about your concerns.
- 3If we had a spacious garden, we would adopt two rescue dogs from the shelter.
- 4She will definitely pass her driving test next week if she stays calm.
- 5What would you do if you found an expensive leather wallet on the sidewalk?
- 6If the temperature drops below zero tonight, the highway will become icy.
- 7If David lived closer to the city center, he would walk to his office every day.
- 8We might visit the contemporary art museum on Saturday if the tickets are affordable.
- 9If I knew his personal telephone number, I would call him immediately.
- 10Unless it rains heavily tomorrow afternoon, the children will play tennis outdoors.
Exceptions
Unless = If Not: The conjunction unless means if not. It introduces an affirmative verb because the negative meaning is already contained within the word: "Unless you leave now, you will be late" (= If you do not leave now...). Modal Variations: While will and would are standard defaults, speakers can use can/could (ability) or may/might (possibility) to vary certainty: "If it rains, we might stay home" (possibility); "If I had a car, I could drive us" (ability).
Erreurs fréquentes
Inserting will into the if-clause
Erreur
If it will rain tomorrow, we will stay home.
Correct
If it rains tomorrow, we will stay home.
The condition clause requires present simple.
Inserting would into the if-clause
Erreur
If I would have money, I would travel.
Correct
If I had money, I would travel.
Condition clause requires past simple.
Negative verbs after unless
Erreur
Unless you don't study, you will fail.
Correct
Unless you study, you will fail.
Unless already means if not.
Récap
L'essentiel de la leçon sur une carte, avant de te tester.
À retenir
- First : if + present, puis will. Réel et probable.
- Second : if + past, puis would. Peu probable, imaginaire ou hypothétique.
- Le past du second conditional n'est pas un temps du passé ; il marque la distance avec la réalité.
Erreurs fréquentes
Erreur: If it will rain tomorrow, we will stay home.
Correct: If it rains tomorrow, we will stay home.Erreur: If I would have money, I would travel.
Correct: If I had money, I would travel.Erreur: Unless you don't study, you will fail.
Correct: Unless you study, you will fail.
Teste-toi
Dis la même idée sous les deux formes et sens le changement de probabilité, puis entraîne-toi.
Points de grammaire associés
Poursuivez votre apprentissage avec d'autres notions de ce niveau.
