FANBOYS is a memory aid for the seven coordinating conjunctions: for, and, nor, but, or, yet, and so. These words help writers connect ideas that are equal in grammatical importance. They are especially useful when joining two independent clauses, which are complete thoughts that could stand alone as sentences.
Knowing FANBOYS helps students write smoother sentences and avoid run-ons.
Understanding ELA: Seven coordinating conjunctions (FANBOYS)
Each coordinating conjunction gives a reader a clue about the relationship between ideas. And usually adds information or moves events forward. But signals a contrast or an exception.
Yet creates a similar contrast, though it often sounds more surprising or stronger. Or presents a choice. So shows a result.
For gives a reason, but it is less common in everyday speech and often sounds formal. Nor continues a negative idea.
The word chosen affects meaning, not just sentence length. A writer who uses but when so is needed can make the logic of a sentence confusing.
It helps to identify the complete units around the conjunction before deciding how to punctuate. A complete clause needs a subject and a verb, and it must express a full thought. In the sentence, "The rain stopped, so we left the park," each side works as its own sentence.
In "The rain stopped so suddenly," the words after so are not a complete clause. They simply describe how the rain stopped.
A comma would not belong there. This check prevents a common mistake where commas are added just because a FANBOYS word appears.
Some of these words have jobs beyond conjunctions. For can be a preposition in a phrase such as "for three days." In that use, it does not connect two equal clauses.
Or can be part of a short list, as in "tea or juice," where no comma is usually needed.
Nor often follows neither, as in "Neither the coach nor the players arrived early." It can begin a new sentence in formal writing, though that pattern needs careful wording. Understanding the job a word is doing matters more than memorizing its spelling or position.
Students meet these choices in stories, essays, instructions, emails, and arguments. In an opinion paragraph, so can link evidence to a conclusion. But and yet can show that an issue has more than one side.
Or can make instructions clear when there are different options. During revision, read each connected idea slowly and name the relationship. Decide whether the second idea adds, contrasts, explains a reason, offers a choice, continues a negative statement, or shows a result.
Then check whether both sides are complete clauses. This process improves clarity and helps writers avoid two problems, run-on sentences with no proper connection and choppy writing made of too many short sentences.
Key Facts
- FANBOYS = For, And, Nor, But, Or, Yet, So.
- A coordinating conjunction joins words, phrases, or clauses of equal grammatical importance.
- Independent clause + comma + FANBOYS + independent clause = compound sentence.
- Example: She studied hard, but she still felt nervous.
- Use a comma before a FANBOYS word when it joins two independent clauses.
- Because and although are not FANBOYS words, so they are subordinating conjunctions, not coordinating conjunctions.
Vocabulary
- Coordinating conjunction
- A word that joins two equal parts of a sentence, such as two words, two phrases, or two independent clauses.
- FANBOYS
- A mnemonic that helps students remember the seven coordinating conjunctions: for, and, nor, but, or, yet, and so.
- Independent clause
- A group of words with a subject and a verb that expresses a complete thought.
- Compound sentence
- A sentence made by joining two independent clauses, often with a comma and a coordinating conjunction.
- Subordinating conjunction
- A word such as because or although that begins a dependent clause and shows a relationship to another idea.
Common Mistakes to Avoid
- Forgetting the comma before FANBOYS when joining two independent clauses. This is wrong because two complete thoughts need a comma before the coordinating conjunction.
- Putting a comma after the FANBOYS word instead of before it. The comma belongs before the conjunction when it connects two independent clauses.
- Treating because or although as FANBOYS words. They are subordinating conjunctions, and only for, and, nor, but, or, yet, and so are coordinating conjunctions.
- Using a FANBOYS word to join two sentences without checking for independent clauses. A comma is needed only when the conjunction joins two complete thoughts.
Practice Questions
- 1 How many FANBOYS words are in this list: for, because, and, but, although, so, yet?
- 2 In the sentence 'Maya wanted to play outside but it started raining,' how many independent clauses are joined by the word but, and where should the comma go?
- 3 Explain why the sentence 'I stayed home because I felt sick' does not use a FANBOYS conjunction, even though it connects two ideas.