1. What are coordinating conjunctions

Coordinating conjunctions are words that link or join two or more elements of equal importance in a sentence. These elements can be words, phrases, or independent clauses. They help to create compound sentences and add flow, allowing ideas to be presented in a balanced and clear way.

Table summarising the use of coordinating conjunctions in English

 

2. List of coordinating conjunctions

For

The coordinating conjunction for is used to introduce an explanation or a reason for something. It is often used to connect two independent clauses, indicating that the second clause explains or provides a reason for the first clause.
Example:
I didn’t go to the party, for I had a lot of work to do.
In this sentence, for is used to explain the reason why the speaker did not go to the party. The first clause, “I didn’t go to the party,” is the main clause, and the second clause, “I had a lot of work to do,” provides the reason or explanation for the speaker’s decision. A comma is used before for when it’s used as a coordinating conjunction to join two independent clauses.

Coordinating conjunction: for
  1. She was nervous about the exam, for she hadn’t studied enough.
  2. She loves to travel, for she enjoys exploring new cultures.
  3. He doesn’t like sweet food, for he has a sensitive tooth.
  4. She could not go with us, for she had to study for a test.

And

The coordinating conjunction and is a word that is used to join two or more words, phrases, or clauses of equal syntactic importance. When using and, it is important to follow certain punctuation rules:

  1. Use a comma before and when joining two independent clauses.
    Example:
    She enjoys reading books, and he likes watching movies.
  2. Do not use a comma before and when connecting two subjects, adjectives, adverbs, verbs, etc.
    Examples:
    1. Dogs and cats are popular pets.
    2. He is smart and handsome.
    3. She sang beautifully and passionately.
    4. She was singing and dancing during the party.
  3. The use of a comma before and is optional when joining the last two items in a list that contains more than three elements.
    Example:
    She bought milk, bread and eggs from the store. It is also correct to say “ She bought milk, bread, and eggs from the store.”
  4. Use a comma before and when joining three or more adjectives modifying the same noun.
    Example:
    He is a smart, funny, and kind person.
  5. Use a comma before and when joining three or more adverbs modifying the same verb.
    Example:
    He spoke clearly, slowly, and confidently.
Coordinating conjunction: and
  1. I woke up early, and I went for a run.
  2. She bought apples, oranges, bananas, and strawberries from the market.
  3. He had a long, tiring, and frustrating day at work.
  4. She sang beautifully, passionately, and confidently during her performance.
 
The use of a comma before and is optional when joining the last two items in a list that contains more than three elements. However, a comma might be necessary to avoid confusion in certain situations. Let’s study the following examples.
  1. Tomorrow, I am meeting my friends, Tom and Sarah.
  2. Tomorrow, I am meeting my friends, Tom, and Sarah.
The first and the second examples are both grammatically correct. However, the first example is confusing. It is not clear if the number of people the speaker is going to meet is only Tom and Sarah or not. The second example is clear. “Tom” and “Sarah” are not part of the group of friends. Instead, the speaker is going to meet his/her friends, who are not named, as well as Tom and Sarah.

Nor

The coordinating conjunction nor is a word that is used to connect two negative ideas or clauses. Use a comma before nor when it joins two independent clauses. Example: “I didn’t study for the test, nor did I review my notes.”

Coordinating conjunction: nor
  1. I don’t like coffee, nor do I like tea.
  2. She doesn’t eat meat, nor does she eat dairy products.
  3. He hasn’t called me, nor has he sent a text message.
  4. She can’t come to the party and nor can her sister.

But

But is a coordinating conjunction used to connect two clauses that present contrasting or conflicting information. It essentially negates or qualifies the information presented in the first clause and introduces a piece of new information in the second clause.

For example, consider the sentence: “They wanted to go to the concert, but they couldn’t get a ticket.” In this sentence, the first clause presents the speaker’s desire to go to the concert, while the second clause introduces the obstacle or problem that prevented them from doing so.

But can also be used to connect two seemingly contrasting adjectives or words that describe the same subject, as in “She is kind but firm,” where “kind” and “firm” are adjectives modifying the same subject. Here, the use of but suggests a contrast between the two qualities being described. In this case, the adjective “kind” suggests a gentle, compassionate nature, while “firm” suggests a sense of determination. The use of but signals that the two qualities may seem to conflict with each other, but in fact, they can coexist in the same person.

When using but to join two independent clauses, a comma should be placed before but. However, when using but to introduce a dependent clause that modifies the main clause, no comma is necessary.

It’s worth noting that but can sometimes be replaced by other conjunctions, such as yet or however, depending on the context and the desired emphasis.

Coordinating conjunction: but
  1. She’s hard-working but not very imaginative.
  2. I was tired, but I decided to finish my work.
  3. She is busy, but she will make time for the meeting.
  4. He is smart, but he lacks experience.
  5. He is smart but lacks experience.
  6. He’s not a lawyer but a teacher.
  7. The weather was cold and rainy, but we still went for a walk.

Or

The conjunction or is used to present a choice between two or more options.

  1. Use a comma before or to join two independent clauses.
    • You can write me an e-mail, or you can give me a call.
    • I could go to the beach, or I could stay home and watch a movie.
  2. Do not use a comma before or to join two clauses sharing the same subject.
    • You can write me an e-mail or give me a call.
    • I could go to the beach or stay home and watch a movie.
  3. Do not use a comma before or to join two verbs having the same subject.
    • Did you study or work over the weekend?
    • Did you eat or skip breakfast this morning?
  4. Do not use a comma before or to join two items.
    • Would you like some coffee or tea?
    • Would you prefer chicken or fish for dinner?
  5. The use of a comma before or is optional when joining the last two items in a list that contains more than three elements.
    • We can have pizza, pasta, or salad for dinner tonight.
    • We can have pizza, pasta or salad for dinner tonight.
Coordinating conjunction: or
  1. I can’t decide if I should wear my blue or black dress to the party tonight.
  2. The concert will be held indoors or outdoors, depending on the weather.
  3. To board the flight, you must present a valid passport or government-issued ID.
  4. For lunch, you can have a sandwich, salad, soup, or pasta.
  5. Should we take the stairs or the elevator?
The conjunction or can also be used to indicate a condition that must be met in order to achieve a desired outcome, or else something bad will happen. In this case, or means if not or otherwise.
  1. You need to study hard or you won’t pass your exam. (If you work hard, you’ll pass your exam.)
  2. We must hurry up or we’ll be late. (If we don’t hurry up, we’ll be late.)

Yet

The coordinating conjunction yet introduces a contrast or contradiction in a sentence. It can show an exception to an idea or action that has been mentioned before.

Coordinating conjunction: yet
  1. She’s very young, yet she’s extremely successful in her career.
  2. I’ve known him for years, yet I couldn’t recognize him.
  3. We have been working all day, yet there is still so much left to do.
  4. They have little money, yet they are always happy.
  5. She was tired yet continued studying for the exam.
  6. The book is old yet still contains relevant information.

So

The coordinating conjunction so expresses cause and effect, results, or reasons. It connects two related sentences or clauses, where the second clause or sentence is the outcome of the first one.

Coordinating conjunction: so
  1. She was feeling cold, so she turned on the heater.
  2. I was hungry, so I made a sandwich.
  3. He didn’t study well, so he failed the test.
  4. The road was slippery, so I drove slowly.
  5. My laptop was outdated, so I bought a new one.
  6. The movie was boring, so we left early.
  7. She didn’t get enough sleep, so she felt tired all day.
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