I watched an interesting YouTube video about commas. In this clip, the author says commas are needed with FANBOYS (for/and/nor/but/or/yet/so).
The example is as follows:
Bartheleme was accepted into the University of Chicago, and he is on the waitlist for Stanford.
However, in this YouTube video clip, the author says it is not necessary when the subject in the first clause is different from the second clause.
The comma-less example that the author uses is:
They went to get pizza but the store was closed.
The example that uses a comma is (the comma is needed as the subject is the same for both of the clauses):
They went to get pizza, but came back with ice cream.
It's confusing because from the first YouTube clip the FANBOYS always need commas, but from the second clip we need the comma only when the subject is the same.
In this video clip, there should be no comma with:
She started the car and drove down the hill.
This example is quite contrary to the second one.
What is the correct usage of comma with FANBOYS? For example, do I need comma or not in this sentence?
I have raised him and tried to give all the support that he needed to become a person who leads a fruitful life,(?) and a model citizen who contributes to make the world a better place.