| A | B |
| He had not washed his face, or combed his hair for days. | Incorrect. There is a comma before a FANBOYS only if there is a subject on both sides. This is a compound verb. |
| Miss Emma came out on the porch with Tante Lou, and she had a basket hung over one arm. | Correct. There is a subject on both sides of the FANBOYS. |
| Tante Lou wore only a sweater, so I figured she was not going to Bayonne with us. | Correct. There is a subject on both sides of the FANBOYS. |
| Vivian Baptiste was a good-looking woman, and knew it. | Incorrect. There is no new subject after the FANBOYS, so there should be no comma. |
| I told the children to go inside, and begin their Bible verses. | Incorrect. There is no subject ofter the FANBOYS, so no comma is needed. |
| He turned back to the board, and stared at the problem for another minute. | Incorrect. This is a compound verb. There should be no comma in front of the FANBOYS. |
| Most of the students remembered the mood I was in and had their heads in their books. | Correct. There is no subject after the FANBOYS. This is a compound verb. |
| He wasn't paying attention, so didn't hear me coming up behind him. | Incorrect. This is a compound verb. No comma is needed. |
| They knew Jefferson was supposed to die in the electric chair, but they hadn't known how this would happen. | Correct. There is a subject on both sides of the FANBOYS, |
| I want to go to prom, yet no one has asked me. | Correct. There is a subject on both sides of the FANBOYS. |
| They study diligently, so they will do well on the quiz. | Correct. There is a subject on both sides of the FANBOYS. |
| Mr. Novak is a good teacher, so his students learn a lot in his class. | Correct. There is a subject on both sides of the FANBOYS. |
| He is winning now, but will lose later. | Incorrect. There should be no comma because there is no subject after but. |
| The students want good grades yet they don't study. | Incorrect. There should be a comma after grades because there is a subject on both sides of the FANBOYS. |
| The lazy boy neither studied, nor cleaned his room. | Incorrect. No comma needed. This is a compound verb. |
| Will Robert marry someday or will he remain a bachelor? | Incorrect. There should be a comma after someday because of the subject he after the FANBOYS. |
| The woman will be very happy and live a contented life. | Correct. No comma needed. This is a compound verb. |
| Frodo destroyed the ring, and lived to tell the story. | Incorrect. No comma necessary because there is no subject after and. |
| Bella is a clumsy girl, yet she is a great vampire. | Correct. There is a subject on both sides of the FANBOYS. |
| Do you want to go bowling, or should we watch a movie? | Correct. There is a subject on both sides of the FANBOYS. |