Conjunctions: And, But, Or, So, Because
Grammar Rule in 30 Seconds
Conjunctions are the glue that holds your sentences together by linking ideas, choices, or reasons.
- Use 'and' to add information: I like tea and coffee.
- Use 'but' to show contrast: It is sunny but cold.
- Use 'because' to explain a reason: I am tired because I worked late.
Overview
- I like tea and coffee.
- She is tall and kind.
- I like tea but not coffee.
- He is tall but not very strong.
- Tea or coffee?
- You can walk or take the bus.
- I was tired, so I went to bed.
- It was hot, so we opened the window.
- I went to bed because I was tired.
- She is happy because she passed the exam.
Conjunction Usage Table
| Conjunction | Function | Example |
|---|---|---|
|
And
|
Addition
|
I like tea and cake.
|
|
But
|
Contrast
|
I like tea but not cake.
|
|
Or
|
Choice
|
Tea or cake?
|
|
So
|
Result
|
I am hungry, so I eat.
|
|
Because
|
Reason
|
I eat because I am hungry.
|
Common Conversational Shortening
| Full | Informal |
|---|---|
|
Because
|
'cause
|
Meanings
Conjunctions are words that connect words, phrases, or clauses. They help you express complex thoughts without using short, choppy sentences.
Addition
Adding information or items together.
“I have a cat and a dog.”
“She is smart and kind.”
Contrast
Showing a difference or opposition.
“I like him, but he is busy.”
“It is cheap but good.”
Choice
Presenting alternatives.
“Do you want tea or coffee?”
“We can walk or take the bus.”
Result
Showing the consequence of an action.
“I was hungry, so I ate.”
“It is raining, so I have an umbrella.”
Reason
Explaining why something happened.
“I am happy because it is my birthday.”
“She left because she was bored.”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Addition
|
A + and + B
|
Cats and dogs.
|
|
Contrast
|
A + but + B
|
Fast but small.
|
|
Choice
|
A + or + B
|
Yes or no.
|
|
Result
|
A + so + B
|
Rain, so stay.
|
|
Reason
|
A + because + B
|
Stay because rain.
|
Espectro de formalidad
I am hungry, therefore I shall dine. (Dining)
I am hungry, so I will eat. (Dining)
I'm hungry, so I'm gonna eat. (Dining)
Starving, gonna grab food. (Dining)
Conjunction Connections
Addition
- And Plus
Contrast
- But Opposite
Ejemplos por nivel
I like apples and bananas.
...
I am tired but happy.
...
Do you want tea or coffee?
...
I am hungry, so I will eat.
...
She studied hard, but she did not pass.
...
I stayed home because it was raining.
...
We can go to the beach or the park.
...
He is kind and very funny.
...
The project was difficult, so we asked for help.
...
I wanted to travel, but I had no money.
...
I am learning English because I want a better job.
...
You can call me or send me an email.
...
The results were promising, and the team was optimistic.
...
It was a long day, so I decided to retire early.
...
The plan is ambitious, but it is achievable.
...
We chose this route because it is faster.
...
The evidence was compelling, yet the jury remained skeptical.
...
He was exhausted, so he opted for a quiet evening.
...
The policy is flawed, and it requires immediate revision.
...
They succeeded because they worked as a unit.
...
The argument is sound, and the implications are profound.
...
The situation is precarious, so we must act with caution.
...
It is not merely a suggestion, but a requirement.
...
The phenomenon persists because of underlying factors.
...
Fácil de confundir
Both explain logic but in reverse directions.
Used in lists but have different meanings.
Both show contrast.
Errores comunes
I like cat and dog.
I like cats and dogs.
I am tired so I sleep.
I am tired, so I sleep.
Because I am tired, so I sleep.
I am tired, so I sleep.
I like tea or coffee.
I like tea and coffee.
He is nice but he is mean.
He is nice, but he is mean.
I go to work because I want money.
I go to work because I need money.
Do you want tea and coffee?
Do you want tea or coffee?
It was raining, but I went out.
It was raining, yet I went out.
I am happy because of I won.
I am happy because I won.
So I was late.
I was late, so I missed the bus.
The data is good, and it is accurate.
The data is both good and accurate.
I did it because of I wanted to.
I did it because I wanted to.
It is cold, so I wear a coat.
It is cold, so I am wearing a coat.
I like apples, and oranges, and pears.
I like apples, oranges, and pears.
Patrones de oraciones
I like ___ and ___.
I am ___ because ___.
It is ___ but ___.
I have ___ so I will ___.
Real World Usage
I'm busy, so call later.
I love travel and food!
I have skills, but I want to learn.
Do you take cash or card?
I want the pizza because it's hot.
I am writing because I have a question.
Use Commas
Don't Double Up
Start with Because
Keep it Simple
Smart Tips
Use a comma before 'but' and 'so' to help the reader breathe.
Use 'because' to link a result to a cause.
Use 'or' to present options clearly.
Use 'but' to highlight the difference between two facts.
Pronunciación
Stress
Conjunctions are usually unstressed in a sentence.
Rising-Falling
I like tea ↗ and coffee ↘.
Listing items.
Memorízalo
Mnemotecnia
Remember FANBOYS: For, And, Nor, But, Or, Yet, So.
Asociación visual
Imagine a bridge connecting two islands. The bridge is labeled 'And', 'But', 'Or', 'So', 'Because'.
Rhyme
And adds more, but shows the change, or gives a choice, so results range.
Story
I wanted to go out, but it was raining. So, I stayed home. I read a book and drank tea because I was bored.
Word Web
Desafío
Write 5 sentences about your day using one conjunction in each.
Notas culturales
Americans use 'so' very frequently in casual speech.
British speakers often use 'and' to start sentences in informal contexts.
Australians often use 'but' at the end of a sentence.
These words have Germanic roots, evolving from Old English connectors.
Inicios de conversación
Do you like coffee or tea?
Are you tired or energetic today?
What is a good book you read?
How do you balance work and life?
Temas para diario
Errores comunes
Test Yourself
I like tea ___ coffee.
It is cold, ___ I will wear a coat.
Find and fix the mistake:
I am tired because so I sleep.
I am hungry. I will eat.
Match each item on the left with its pair on the right:
Do you want cake ___ ice cream?
I studied hard, ___ I failed.
I am late. There is traffic.
Score: /8
Ejercicios de practica
8 exercisesI like tea ___ coffee.
It is cold, ___ I will wear a coat.
Find and fix the mistake:
I am tired because so I sleep.
I am hungry. I will eat.
But
Do you want cake ___ ice cream?
I studied hard, ___ I failed.
I am late. There is traffic.
Score: /8
Preguntas frecuentes (8)
Yes, in informal English it is very common to start a sentence with 'And' to continue a story.
Yes, it is a subordinating conjunction used to show reason.
If you are joining two independent clauses, yes. If you are just joining two words, no.
'Or' is for positive choices, 'nor' is for negative choices.
Yes, it is common in spoken English to start a sentence with 'So' to introduce a result.
Use 'but' when the second part of the sentence contradicts the first.
Yes, like 'yet', 'nor', 'for', 'although', 'since', etc.
It is neutral and used in almost every situation.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
y, pero, o
Spanish changes 'y' to 'e' before 'i' sounds.
et, mais, ou
French has more complex rules for 'because' (parce que vs car).
und, aber, oder
German 'aber' can be used as a particle, not just a conjunction.
to, demo, matawa
Japanese conjunctions often follow the noun instead of preceding it.
wa, lakin, aw
Arabic 'wa' is often attached to the following word.
hé, dànshì, huòzhě
Chinese conjunctions are not used to connect sentences in the same way as English.
Learning Path
Prerequisites
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