Commas

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What Are Commas? (with Examples)

A comma (,) is a punctuation mark used to mark the divisions in text (as may be caused by phrases, clauses or conjunctions). Commas are used in lists to separate list items and in numbers to aid reading.

Below is a quick overview of when commas are used. Click here for a more comprehensive version of this list or click on the "Read more" link with each entry.

When to Use Commas (A Very Quick Overview)

Below is a quick overview on when to use commas.

(1) Use a comma after phrase or clause that "sets the scene" at the start of a sentence. (2) Use a comma after a transitional phrase at the start of a sentence.

A transitional phrase is a term like However, Consequently, Therefore, and As a result. (3) Use a comma after an interjection.

An interjection is usually a short word inserted into a sentence to express an emotion or feeling. (4) Use a comma before a conjunction that joins two independent clauses.

Words like and, or, and but are known as conjunctions. (5) Use commas as parentheses to offset a parenthesis.

Parentheses are punctuation marks (either commas, dashes or brackets) used in pairs to offset additional information in a sentence (known as a parenthesis). (6) Use commas to separate list items. (7) Use a comma after a long subject if it aids your readers (8) Use commas with numbers.

Commas can be used every 3 decimal places in large numbers to make them more readable. (9) Use commas before quotation marks when the quotation is introduced. (10) Use commas to offset words in the vocative case.
WHAT IS PUNCTUATION?

What are apostrophes?
What are colons?
More about commas
What are dashes?
What is ellipsis?
What are exclamation marks?
What are hyphens?
What is a full stop / period?
What are parentheses (i.e., brackets)?
What are questions marks?
What are quotation marks?
What are semicolons?


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See Also

Much more about using commas What is punctuation? What are apostrophes? What are colons? What are commas?
What are dashes? What is ellipsis? What are exclamation marks? What are hyphens? What is a full stop / period? What are parentheses (i.e., brackets)? What are questions marks? What are quotation marks? What are semicolons? Glossary of grammatical terms