- The toy was red [comma] round [comma] and heavy.
- I purchased pickles at the store [comma] gas at the convenience store [comma] and flowers at the florist for my beautiful wife.
Separate every item in a series with a comma.
Series: A series is a string of three or more matching items in a sentence. For example, the series in sample 1 contains three items: red, round, and heavy. The series in sample 2 also contains three items.
Take a look at sample 1 and see how the commas fit the rule. The first item is red, and it is separated from round by a comma. The second item is round, and it is separated from red and heavy by commas. Every item in the series is separated from the other items by commas.
Koan 1: Bumbo approached the teacher and said, “Teacher, I was taught not to use the comma before the word and. Is that true?” The teacher replied, “Newspapers.”