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Using coordinating conjunctions such as and, but, or, nor, for, so and yet.
Coordinating conjunctions join words, phrases, or clauses of equal grammatical status.
The main coordinating conjunctions are and, but, or, nor, for, so, and yet.
And joins elements to express addition, combination, or sequence.
For example, John and Mary arrived, She bought bread and milk, and We finished the work and went home.
And can join two independent clauses when the clauses express related information or events.
For example, She opened the door, and he walked inside.
And can join coordinated verbs or clauses to describe actions occurring one after another.
For example, She got up, got dressed, and left the house.
But joins contrasting elements or clauses.
For example, The room is small but comfortable and I wanted to go, but I was too tired.
But can join two independent clauses to express a contrast.
For example, I called her, but she did not answer.
Or joins alternatives, possibilities, or choices.
For example, You can have tea or coffee.
Or can join independent clauses that present alternative actions or situations.
For example, We can stay here, or we can go home.
So can join clauses to express a result or consequence.
For example, It was raining, so we stayed home.
So is a coordinating conjunction, while therefore is a sentence connector with different punctuation and syntactic behavior.
Compare It was raining, so we stayed home with It was raining; therefore, we stayed home.
Yet can coordinate contrasting ideas and often emphasizes an unexpected contrast.
For example, He was tired, yet he continued working.
Yet and but can both express contrast, but yet often gives a stronger sense of unexpected continuation.
For example, The task was difficult, yet we completed it.
Nor joins negative alternatives and can follow a preceding negative clause or occur with neither.
For example, She did not call, nor did she send a message.
When nor introduces an independent negative clause, auxiliary-subject inversion normally follows.
For example, He did not apologize, nor did he explain what happened.
For can join clauses to give a reason or explanation, especially in formal or literary English.
For example, We left early, for the weather was getting worse.
For and because can both express reason, but because is a subordinating conjunction while for coordinates an independent clause.
Compare We stayed home because it was raining with We stayed home, for it was raining.
Coordinating conjunctions can connect individual words performing the same grammatical function.
For example, bread and butter, old but reliable, and tea or coffee.
Coordinating conjunctions can join phrases of equal grammatical status.
For example, in the morning or in the evening and very tired but still determined.
Coordinating conjunctions can join independent or, in some cases, dependent clauses of equivalent status.
For example, I wanted to stay, but I had to leave.
A comma is commonly used before a coordinating conjunction joining two independent clauses.
For example, I was tired, so I went home.
A comma is normally not used merely because a coordinating conjunction joins short words or phrases.
For example, tea and coffee, not tea, and coffee in an ordinary two-item list.
Coordinated elements should normally have matching grammatical forms.
For example, She likes reading, writing, and travelling.
The subject can be repeated when it improves clarity, contrast, rhythm, or emphasis.
For example, She opened the door, and she walked inside emphasizes the second action more than She opened the door and walked inside.
A sentence can contain several coordinating conjunctions when different elements or clauses are being coordinated.
For example, You can stay or leave, but you must decide now.
And and or can be repeated to coordinate several elements and can add rhythm, emphasis, or a sense of exhaustive alternatives.
For example, We invited John, Mary, and Peter. Repeated forms such as either ... or belong to correlative coordination.
Elements can be coordinated when they are grammatically comparable even if they are not identical in length.
For example, She wanted to leave and for us to stay is possible when the underlying coordination is structurally clear.
A coordinating conjunction joins elements of equal status, while a subordinating conjunction makes one clause dependent on another.
Compare I was tired, so I went home with I went home because I was tired.
The choice of coordinating conjunction determines the relationship between the connected elements.
And adds, but and yet contrast, or presents alternatives, so gives a result, nor continues a negative alternative, and for gives a reason.
Use coordinating conjunctions according to their grammatical function and logical meaning.
Common mistakes include confusing so with therefore, using for as a casual replacement for because, misusing nor, joining non-parallel elements, and omitting required punctuation between independent clauses.