3.1 Commas

One of the punctuation clues to reading you may encounter is the comma. A comma is a punctuation mark that indicates a pause in a sentence or a separation of things in a list. Commas can be used in a variety of ways. Look at some of the following sentences to see how you might use a comma when writing a sentence.

• Introductory word: Personally, I think the practice is helpful.
• Lists: The wind destroyed the barn, the tool shed, and the back porch.
• Coordinating adjectives: He was tired, hungry, and late.
• Conjunctions in compound sentences: The bedroom door was closed, so the children knew their mother was asleep.
• Interrupting words: I knew where it was hidden, of course, but I wanted them to find it themselves.
• Dates, addresses, greetings, and letters: The letter was postmarked December 8, 1945.

Commas after an Introductory Word or Phrase

You may notice a comma that appears near the beginning of the sentence, usually after a word or phrase. This comma lets the reader know where the introductory word or phrase ends, and the main sentence begins.

Without spoiling the surprise, we need to tell her to save the date.

In this sentence, without spoiling the surprise is an introductory phrase, while we need to tell her to save the date is the main sentence. Notice how a comma separates them. When only an introductory word appears in the sentence, a comma also follows the introductory word.

Ironically, she already had plans for that day.

Exercise 1

Look for the introductory word or phrase. On your own sheet of paper, copy the sentence and add a comma to correct the sentence.

1. Suddenly the dog ran into the house.
2. In the blink of an eye the kids were ready to go to the movies.
3. Confused he tried opening the box from the other end.
4. Every year we go camping in the woods.
5. Without a doubt green is my favorite color.
6. Hesitating she looked back at the directions before proceeding.
7. Fortunately the sleeping baby did not stir when the doorbell rang.
8. Believe it or not the criminal was able to rob the same bank three times.