Commas give meaning to sentences
Commas are important to inject the correct meaning into a sentence, particularly long sentences.
They also have an important role to play in short sentences, and if you don’t get it right there could be awful consequences.
Let’s do a quick exercise to show how dangerous it can be if you get it wrong.
Consider the following two statements:
- Let’s eat, Grandma
- Let’s eat Grandma
Which one of the above would you use if you were inviting Grandma to eat with you?
Why, or when, do you think you would use the second statement? The answer should be never! Clue – take a look at the title of this post.
Separate your elements
Generally, and very loosely speaking, commas are used to connect clauses that might form individual sentences if written in another way.
They are also used when writing a list of things in the same sentence, adding information that could otherwise have been left out without changing the meaning of a sentence, setting off parenthetical elements, and after dialogue, but before the closing quotation marks, when writing speech.
I’ll give you an example of dialogue in a moment, but if you managed to negotiate the previous sentence, well done, you will have noticed that it was a list and contained a parenthetical element.
Commas and dialogue
“It’s a nice day,” he said.
He said, “It’s a nice day.”
Notice the commas in conjunction with speech tags.
The more alert of you will have noticed I didn’t discuss the positioning of the comma depending on where you place he said. But we’re here to discuss Grandma, not who said what.
So who’s eating Grandma?
In example 1 at the start of this article, the statement is directed at Grandma, hence the comma before the noun. It is a sentence that is inviting Grandma to do something with you. This example is not dangerous to Grandma.
In example 2, Grandma becomes part of the statement about eating, hence no comma. It is a sentence that indicates what you are going to do to Grandma. This example is dangerous to Grandma.
Rules about using commas
Unfortunately, the rules regarding commas aren’t as clear or as hard and fast as other punctuation. Just make sure you’re not giving the wrong messages when you use them!