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(FANBOYS) Commas and Coordinating Conjunctions

What are coordinating conjunctions, and when do you use a comma with them? Read on to tackle those pesky comma placements and raise your rating.

Fanboys comma examples


What is a coordinating conjunction?


A coordinating conjunction is a special word that joins two clauses of a sentence together. which can be remembered through the acronym FANBOYS. These special words are:


When do you use a comma?

Use a simple and effective test to determine if a comma is needed. Read each clause joined by the conjunction separately and assess if it can stand alone as a sentence. A clause that can stand independently is also known as an independent clause. A comma is required before the conjunction if both sides meet this criterion.



“I went to the store, and I bought some apples.”

Since “I went to the store” and “I bought some apples” are both independent clauses, this comma is required.


However, if one of the clauses cannot stand on its own as a complete sentence (aka a dependent clause), do not separate the clauses with a comma.


“I went to the store and bought some apples.”

Since “bought some apples” is a dependent clause, do not use a comma before the conjunction.


The trick with “nor”

While the test functions for any of the FANBOYS, “Nor” can be a bit tricky. Locate the subject in the second clause. If the subject is included in the second clause, employ a comma; otherwise, refrain from using one.


“I could not lift the boulder, nor could I budge it.”

The subject “I” is included in the second clause, so the comma is required.


“I could not lift the boulder nor budge it.”

No subject, no comma.


Imperative sentences with FANBOYS

Imperative sentences direct the reader to take action, issuing commands like “Call us now” or “Read ahead.” They are independent clauses, and when joined with another independent clause using a coordinating conjunction, a comma must precede the conjunction. Here are various examples illustrating this rule.

Imperative to imperative:
“Go to your room, but don’t slam the door.”


Imperative to an independent clause with a different subject:

“Pull your car forward, and the mechanic will service your car.”


Imperative to an independent clause with the same subject:

“Grab your keys, and you can drive to the store.”


Independent to imperative with subject change:

“The doctor will see you now, so grab your things.”


Independent to imperative with the same subject:

“You can go to the store, but don’t forget to grab cat food.”


Do not split a compound predicate with a comma, however.


“You can go to the store and buy some apples.”

This sentence does not use a comma because it lists two things that the reader can do: “go to the store” and “buy some apples.”


With these tips and some practice, you’ll be well on your way to mastering the FANBOYS comma.


401733 24. June 2014 - 1:02

Error  corrections:  harriet  Beecher Stowe    should be  Harriet  Beecher Stowe.


343181 25. June 2014 - 16:39

Thanks for the FANBOYS explanation. I will learn one rule at a time about comma usage.


343181 25. June 2014 - 17:37

Thank you.


282273 25. November 2014 - 3:43

Mrs. Noel, you can either input the html manually into your documents, or use the button that looks like a chain link in Textbroker’s online text editor. The online editor used to accept hyperlinks and other HTML created in Word and Open Office. I am not sure why that changed when the website was upgraded last spring.

Thanks, Alex, for a convenient cheat sheet of our own. 🙂


472685 7. January 2015 - 16:58


Thank you for admiting that commas still can cause you problems.  I just started writing for TB and had my first evaluation and it was pretty discouraging.  Your comment cheered me up.


20328 9. January 2015 - 9:02

It would be helpful if Text Broker included this information in black and white text.


449573 5. March 2015 - 13:58

Thanks for this amazing information! One question: do the tips above only work on Google, or will they also work on other search engines? We had a thread in the forum recently about Google's nosy nature, and I've fallen in love with, a search engine that doesn't stalk you :). Just wondering.

If not, this makes me tempted to throw caution to the wind and go back to Google for those tough research subjects. Thanks and God bless! 🙂



515589 25. April 2015 - 17:06

I am just starting out and this is very helpful. The first attempt is a little intinidating. Thank you.


384481 9. May 2015 - 5:04

I'm finding that some clients find articles suspect that are written quickly.


27766 17. December 2015 - 6:43

I really like the way that the team has presented this information for authors. Textbroker gets it right the first time on so many matters, it is hard to imagine any challenge the team cannot master well. Thanks for the love!

Author Kat55


617225 25. March 2016 - 3:08

A great help.  I have been afraid to try to write articles that wanted links inserted.


alice 6. September 2017 - 18:11

i love this website


Niema Jones 30. April 2019 - 0:14

Thanks. Just got my first review. Glad to find help to pull me out of the water. I am looking forward to fine tuning my product.


TB Staff 2. October 2019 - 9:18

Hi! Thank you for your feedback! We will definitely consider writing more on this topic in the future.


Ben 13. May 2020 - 22:22

I like to eat soup but not when it is cold.

Comma or no comma?


TB Staff 15. May 2020 - 10:27

Hi Ben,

Thank you for your question! Since "not when it is cold" is not a complete sentence there would not be a comma.


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