Commas, Careful Writing, and Your Credibility

Many business writers trip up when they add or omit commas. Here’s a comma that many writers would mistakenly leave out:

[A recent survey] ranked San Francisco sixth among U.S. metropolitan areas [in] providing goods or services that help the environment. San Jose [ranked] 26th, behind such contenders as Kansas City, Mo., and Albany, N.Y.

— David R. Baker, “S.F. ranked 6th in U.S. for green jobs by survey,”

sfgate.com, July 13, 2011

It’s necessary to mention Missouri in that sentence since there’s also a Kansas City, Kansas. And it’s necessary to include commas both before and after the state name since the quoted sentence continues after it.

Commas are the most frequently misused punctuation marks in U.S. English. Using them correctly makes your own prose look carefully written, and careful, correct writing boosts your credibility as a businessperson.

Write It Well’s e-learning module Just Commas includes self-paced quizzes to help you test your knowledge of punctuation, and our book Essential Grammar includes a full chapter on commas.

We’ve made all the book’s exercises available as a free download here to accompany the e-book, which is now available on Amazon.com!

Do you have an important document but not enough time to double-check your punctuation? Just use Write It Well’s editing services.

We’ll make sure your prose is correct, clear, concise, and engaging so your readers will follow all your ideas easily and respect your voice.