Mots de Liaison: Et, Mais, Ou
Grammar Rule in 30 Seconds
Use 'and', 'but', and 'or' to link equal grammatical elements while maintaining parallel structure and logical flow.
- Use 'and' for addition: 'He likes tea and coffee.'
- Use 'but' for contrast: 'It was raining but warm.'
- Use 'or' for choices: 'Tea or coffee?'
Overview
and, but, et or — peuvent sembler élémentaires au premier abord (ce sont souvent les premiers mots que l'on apprend en CM1), mais leur utilisation au niveau expert est ce qui sépare une rédaction académique ou professionnelle d'une simple suite de phrases juxtaposées.For, And, Nor, But, Or, Yet, So), mais nous nous concentrons ici sur les trois piliers : and (l'addition), but (le contraste) et or (l'alternative).and, but ou or soient symétriques. Si tu commences par un gérondif (forme en -ing), tu dois finir par un gérondif.And | Et | Addition, succession, conséquence |But | Mais | Opposition, exception, concession |Or | Ou | Choix, alternative, condition |but est puissant mais qu'il doit être utilisé avec précaution pour ne pas paraître trop répétitif. De même, and ne sert pas qu'à ajouter des éléments ; il peut exprimer une relation de cause à effet que nous rendrions en français par « et donc » ou « si bien que ».She is talented and ambitious.(Adjectif + Adjectif)You can pay by credit card or cash.(Nom + Nom)The task was difficult but rewarding.(Adjectif + Adjectif)
- *Incorrect :*
I like swimming and to hike.(Mélange de gérondif et d'infinitif) - *Correct :*
I like swimming and hiking.
We invited the entrepreneurs, the investors, and the analysts.
and, la phrase pourrait parfois être mal interprétée. Imagine : I love my parents, Lady Gaga and Barack Obama. Sans la virgule d'Oxford, on pourrait croire (avec beaucoup d'imagination) que tes parents *sont* Lady Gaga et Barack Obama !and, but ou or, tu dois mettre une virgule avant la conjonction.and Clause 2 | The market is shifting, and companies must adapt quickly. |but Clause 2 | We analyzed the data, but the results remained inconclusive. |or Clause 2 | You must submit the report by noon, or the client will be unhappy. |Andand peut exprimer :- La chronologie immédiate :
He heard a noise and ran to the window.(L'action suit immédiatement la première). - La condition (style impératif) :
Work hard and you will succeed.(Équivalent de : *Si tu travailles dur, tu réussiras*). - La répétition pour l'emphase :
The situation got worse and worse.(On souligne la progression).
ButBut est le pivot de ton argumentation. Utilise-le pour :- Le contraste inattendu :
He is a billionaire, but he drives a twenty-year-old car. - La restriction après une négation :
It’s not that I don’t want to go, but I simply don’t have the time. - La concession (souvent en début de phrase dans un style littéraire) :
But, in the end, does it really matter?(Attention, certains professeurs conservateurs déconseillent de commencer parbut, mais c'est très courant dans le journalisme de haut niveau comme *The Economist*).
OrOr ne sert pas qu'à choisir entre deux parfums de glace. Il sert à :- L'alternative exclusive :
Is the meeting on Tuesday or Wednesday?(L'un exclut l'autre). - La clarification (ou reformulation) :
He suffers from pyrophobia, or the fear of fire.(Ici,orintroduit une définition). - L'avertissement :
We need to leave now, or we’ll miss our flight.(Ici,orremplace « sinon »).
- *Erreur :*
I finished my work, I went home. - *Correction :*
I finished my work, and I went home.
but entre deux propositions- *Erreur :*
The project was expensive but it was worth it. - *Correction :*
The project was expensive, but it was worth it.(Puisque « it was worth it » est une proposition complète avec son propre sujet).
but et howeverBut est une conjonction de coordination (elle reste à l'intérieur de la phrase). However est un adverbe de liaison (souvent en début de phrase ou après un point-virgule).- *Erreur :*
I like the car, however it is too expensive. - *Correction :*
I like the car, but it is too expensive.OUI like the car; however, it is too expensive.
- *Erreur :*
My job involves coding, testing, and to write reports. - *Correction :*
My job involves coding, testing, and writing reports.
And | As well as | As well as met l'accent sur le premier élément, le second est additionnel. |But | Yet | Yet exprime une surprise plus forte, un contraste plus poétique ou dramatique. |Or | Otherwise | Otherwise est plus formel et insiste lourdement sur la conséquence négative. |But | Nonetheless | Nonetheless (néanmoins) est utilisé pour la concession dans un argumentaire structuré. |But et Yet :It was raining, but we went for a walk.(Neutre, factuel).It was raining, yet we went for a walk.(Insiste sur le fait que c'est surprenant ou courageux d'être sorti sous la pluie).
And ou But ?And, ton texte perdra sa structure.or et either... or ?Or est simple. Either... or est utilisé pour souligner qu'il n'y a que deux options possibles, et qu'elles s'excluent mutuellement. C'est plus emphatique. You can either stay or leave.and ?and peut-il être une phrase complète avec son propre sujet ? Si oui, mets une virgule. Si c'est juste un verbe ou un nom qui complète le premier sujet, n'en mets pas.- *Exemple 1 :*
He cooked dinner and washed the dishes.(Pas de virgule, un seul sujet). - *Exemple 2 :*
He cooked dinner, and his wife washed the dishes.(Virgule, deux sujets différents).
Usage of Connectors by Grammatical Category
| Category | Connector | Example | Punctuation Note |
|---|---|---|---|
|
Nouns
|
and
|
Apples and oranges
|
No comma for two items
|
|
Adjectives
|
but
|
Small but mighty
|
No comma for two items
|
|
Verbs
|
or
|
Eat or drink
|
No comma for two items
|
|
Independent Clauses
|
and
|
I sang, and she danced.
|
Comma required
|
|
Independent Clauses
|
but
|
I tried, but I failed.
|
Comma required
|
|
Independent Clauses
|
or
|
Leave, or I'll call the police.
|
Comma required
|
|
Lists (3+ items)
|
and
|
Red, white, and blue
|
Oxford comma optional but recommended
|
Informal & Stylistic Variations
| Full Form | Informal/Stylistic | Context |
|---|---|---|
|
and
|
n'
|
Rock n' roll (Music/Casual)
|
|
and
|
&
|
Business names / Notes
|
|
but
|
yet
|
Formal contrast (He is old yet active)
|
|
or
|
v.
|
Legal/Sports (Team A v. Team B)
|
Meanings
Coordinating conjunctions connect words, phrases, or clauses of equal grammatical rank. They establish logical relationships of addition, contrast, or alternative.
Addition (And)
Used to join two or more items or ideas that are similar or related.
“She studied hard and passed the exam.”
“We need bread, milk, and eggs.”
Contrast (But)
Used to introduce a statement that adds something different or opposite to what has already been mentioned.
“I wanted to go, but I was too tired.”
“The movie was long but interesting.”
Alternative (Or)
Used to present a choice between two or more possibilities.
“Would you like tea or coffee?”
“We can walk or take the bus.”
Logical Consequence (And)
Used in conditional-style imperatives to show a result.
“Work hard and you will succeed.”
“Touch that and you'll be sorry.”
Exception (But)
Used as a preposition meaning 'except' or 'apart from'.
“Everyone but Sarah was there.”
“I have nothing but respect for him.”
Negative Warning (Or)
Used to show what will happen if the first part of the sentence does not occur.
“Hurry up, or we'll be late.”
“Stop that, or I'm leaving.”
Reference Table
| Conjonction | Fonction | Exemple | Contexte moderne |
|---|---|---|---|
|
and
|
Addition (+)
|
I like coffee and tea.
|
Lister des passe-temps dans une bio
|
|
but
|
Contraste (≠)
|
I'm tired, but happy.
|
Critiquer un film en ligne
|
|
or
|
Choix (?)
|
Tea or coffee?
|
Commander sur une application de livraison de nourriture
|
|
and
|
Séquence
|
I woke up and showered.
|
Légendes de vlogs quotidiens
|
|
but
|
Correction
|
Not red, but blue.
|
Corriger une faute de frappe dans un chat
|
|
or
|
Possibilité
|
Maybe today or tomorrow.
|
Planifier un appel Zoom
|
Spectre de formalité
The results were statistically significant; however, the sample size was limited. (Research reporting)
The results were significant, but the sample was small. (Research reporting)
It worked, but it was a tiny test. (Research reporting)
It's cool but kinda mid. (Research reporting)
The Logic of Connectors
Addition
- And Plus / Sequence
Contrast
- But Opposite / Exception
Choice
- Or Alternative / Warning
Conjunctions vs. Conjunctive Adverbs
The Comma Decision
Are you joining two full sentences?
Is it a list of 3+ items?
Rhetorical Uses of 'And'
Sequence
- • I went home and slept.
- • He ate and left.
Condition
- • Do it and see.
- • Try and you'll know.
Emphasis
- • Better and better
- • On and on
Exemples par niveau
I have a cat and a dog.
It is hot but sunny.
Do you want milk or juice?
She is tired and hungry.
I like to swim, and I like to run.
He studied for the test, but he failed.
You can stay here, or you can go home.
The hotel was cheap but very clean.
The project was difficult, and it took a long time to finish.
I don't like coffee, tea, or soda.
She is not only talented but also very humble.
We could go to the beach, or we could visit the museum.
The data was collected over six months, and the analysis was performed by experts.
The results were promising, but the sample size was too small.
Applicants must have a degree, three years of experience, and a valid license.
You must submit the report by Friday, or you will lose the contract.
The theory is elegant in its simplicity, but its practical application remains elusive.
He was anything but pleased with the final outcome of the negotiations.
The city was a labyrinth of narrow streets, and dark alleys, and hidden courtyards.
Whether we succeed or fail depends entirely on our collective resolve.
The argument was not merely flawed but fundamentally deceptive in its premise.
He sought neither fame nor fortune, but a simple life of quiet contemplation.
The storm raged with a ferocity that was at once terrifying and awe-inspiring.
One must adapt to the changing landscape, or risk becoming a relic of the past.
Facile à confondre
Learners use 'however' as a direct replacement for 'but' without changing punctuation.
Learners use 'or' after 'neither'.
Learners think 'as well as' is a coordinating conjunction.
Erreurs courantes
I like apples, oranges.
I like apples and oranges.
I want tea but coffee.
I want tea or coffee.
He is tall, and.
He is tall and strong.
I like and apples.
I like apples and pears.
I went home, I slept.
I went home, and I slept.
It was cold but, it was sunny.
It was cold, but it was sunny.
Do you like red and blue?
Do you like red or blue?
He is rich but he is unhappy.
He is rich, but he is unhappy.
I like hiking and to swim.
I like hiking and swimming.
I don't like tea and coffee.
I don't like tea or coffee.
He is smart, however he is lazy.
He is smart, but he is lazy.
We can go by bus, or train.
We can go by bus or train.
The report was detailed, accurate, and it was timely.
The report was detailed, accurate, and timely.
He was anything or happy.
He was anything but happy.
I have no choice but leaving.
I have no choice but to leave.
The project failed, but, we learned a lot.
The project failed, but we learned a lot.
Structures de phrases
I like ___ and ___.
It was ___, but ___.
You can either ___ or ___.
Not only was the ___ ___, but it was also ___.
Real World Usage
On my way but traffic is bad.
I am hardworking and I have five years of experience.
I'll have the burger, but no onions please.
The hypothesis was tested, and the results were recorded.
Pizza or Tacos? Vote now!
We can visit the Eiffel Tower or the Louvre.
La règle des listes
La virgule avant 'but'
Commencer des phrases
Smart Tips
Use the Oxford Comma to ensure each item is clearly separated and distinct.
Replace 'but' with 'yet' or 'however' (with proper punctuation).
Ensure all verbs are in the same tense and form.
Use 'or' to mean 'neither of these things'.
Prononciation
Weak Form of 'And'
In natural speech, 'and' is often reduced to /ən/ or just /n/.
Glottal Stop with 'But'
In many British dialects, the 't' in 'but' is replaced by a glottal stop /bʌʔ/.
Linking 'Or'
When 'or' is followed by a vowel, the 'r' is often pronounced to link the words (e.g., 'tea or_apple').
Lists
Apples (rising), pears (rising), and bananas (falling).
Shows the list is finished.
Mémorise-le
Moyen mnémotechnique
Remember FANBOYS: For, And, Nor, But, Or, Yet, So. (Focus on the 'Big Three': And, But, Or).
Association visuelle
Imagine 'And' as a bridge connecting two identical islands, 'But' as a wall with a small door leading to a different landscape, and 'Or' as a fork in the road with two signs.
Rhyme
And adds more to the score, But shows a different door, Or gives a choice to explore.
Story
I went to the market AND bought a fish. I wanted to cook it, BUT I had no fire. I thought, 'Should I buy wood OR just eat it raw?'
Word Web
Défi
Write a 5-sentence story where every sentence must use either 'and', 'but', or 'or' to connect two independent clauses.
Notes culturelles
The Oxford Comma is less common in UK journalism (like the BBC) but still used in academic writing (Oxford University Press).
The Oxford Comma is standard in most US style guides (APA, MLA, Chicago).
In legal documents, 'and/or' is frequently used to avoid ambiguity, though it is often criticized as clunky in general writing.
All three words have Old English roots: 'and' (and), 'but' (be-utan - meaning 'outside'), and 'or' (othther).
Amorces de conversation
Do you prefer working in an office or working from home?
Tell me about a time you tried something new but didn't like it.
In your opinion, is it better to be rich and unhappy or poor and happy?
Discuss the impact of technology on society: is it a blessing or a curse?
Sujets d'écriture
Erreurs courantes
Test Yourself
I like football ___ I don't like tennis.
Choisissez la meilleure phrase pour un choix :
Find and fix the mistake:
I am tall and I am not fast.
Score: /3
Exercices pratiques
8 exercisesI wanted to buy the dress, ___ it was too expensive.
You can have the blue shirt ___ the red one, but not both.
Find and fix the mistake:
The sun was shining, and the birds were singing.
He is very rich. He is very unhappy.
I like swimming, dancing, and to play tennis.
A: Should we take the train? B: We could, ___ it might be faster to drive.
Select the contrast word.
1. Addition, 2. Choice, 3. Contrast
Score: /8
Practice Bank
10 exercisesI have a brother ___ a sister.
Choisissez la phrase la plus naturelle :
Is your car blue and red?
coffee / but / I / like / I / tea / hate
Ich bin müde, aber ich bin glücklich.
Faites correspondre la fonction à la conjonction :
He is rich ___ he is not happy.
Lequel ressemble à un message moderne ?
I can pay with cash but card.
tired / and / I / am / hungry
Score: /10
FAQ (8)
Yes, you can! It is common in modern writing for emphasis, though some very formal teachers might still discourage it.
It is the comma before the final 'and' or 'or' in a list of three or more items (e.g., 'A, B, and C').
Use a comma before 'but' when it connects two full sentences (independent clauses).
It means using the same grammatical form for all items in a list (e.g., 'I like running, jumping, and swimming').
In some cases, yes! 'Work hard and you'll pass' means 'If you work hard, you'll pass.'
It is common in legal and technical writing but should be avoided in creative or casual writing.
It's a mistake where you join two sentences with only a comma and no conjunction.
Usually, but it can also mean 'except', as in 'Everyone but me was there.'
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
y, pero, o
English conjunctions do not change based on the following sound.
et, mais, ou
French uses 'ou' (or) vs 'où' (where), which are homophones.
und, aber, oder
English uses 'but' for both 'aber' and 'sondern' contexts.
と (to), しかし (shikashi), か (ka)
English uses 'and' for almost all grammatical categories.
و (wa), لكن (lakin), أو (aw)
Arabic often starts sentences with 'wa', which is less common in formal English.
和 (hé), 但是 (dànshì), 或者 (huòzhě)
English 'and' is much more versatile than Chinese 'hé'.
Learning Path
Prerequisites
Vidéos associées
The Hidden Politics of Home: Crash Course Latin American Literature #8
Tumbleweeds Aren't From Here
The tale of the Monkey King and the Buddha - Ji Hao
Conjunctions – English Grammar Lessons
Ellii (formerly ESL Library)
What is a Conjunction? 3 Types of Conjunctions | Coordinate | Subordinate | Correlative (free PDF)
The Learning Depot
What are Conjunctions? ► Learn English Grammar with Joining Words
Maple Online Learning
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