Comma Splice

• When you join two independent clauses with a comma and no conjunction, it’s called a comma splice. Some people consider this a type of run-on sentence, while other people think of it as a punctuation error.
• Here’s an example of a comma splice: Koala bears are not actually bears, they are marsupials.
• There are three ways to fix a comma splice. You can add a conjunction, change the comma to a semicolon, or make each independent clause its own sentence.

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  What Is a Comma Splice?
  

  A comma splice is particular kind of comma mistake that happens when you use a comma to join two independent clauses. Here’s an example:

  Koala bears are not actually bears, they are marsupials.

  How can you tell that’s a comma splice? Look at the group of words before the comma.

  koala bears are not actually bears

  Did you notice that this group of words can stand by itself as a complete sentence? That means it’s an independent clause.

  Now look at the group of words after the comma.

  they are marsupials

  This group of words can also stand by itself as a complete sentence. It’s another independent clause.

  When you have two independent clauses, a comma is not strong enough to glue them together.

  How to Fix a Comma Splice

  There are three common ways to fix a comma splice. Let’s look at a new example:

  I am not angry with you, I am not happy with you, either.

  Fix #1: Add a Conjunction

  One way to fix a comma splice is to add a conjunction immediately after the comma. With most comma splices, the conjunction you’ll want to add is probably and, but, or so.

  I am not angry with you, but I am not happy with you, either.

  Fix #2: Change the Comma to a Semicolon

  If adding a conjunction doesn’t seem to work, you can change the comma to a semicolon instead. Unlike commas, semicolons are strong enough to glue two independent clauses together.

  I am not angry with you; I am not happy with you, either.

  If you decide to use a semicolon, make sure there is a close, logical connection between the two independent clauses.

  Fix #3: Make Separate Sentences

  If adding a conjunction doesn’t seem to work and using a comma feels too stuffy, you can fix a comma splice by simply making each independent clause a separate sentence.

  I am not angry with you. I am not happy with you, either.

  More Examples of Comma Splices

  Are you getting the hang of it? Here are a few more examples of comma splices and possible corrections.

  I’m thinking of skipping English class, it’s really boring.
  .

  Adding a conjunction like and or but after the comma in the sentence above doesn’t really make sense. But there does seem to be a close, logical connection between the first independent clause (I’m thinking of skipping English class) and the second independent clause (it’s really boring). This is the perfect situation for a semicolon.

  I’m thinking of skipping English class; it’s really boring.

  You could also break those two independent clauses apart and make them separate sentences.

  I’m thinking of skipping English class. It’s really boring.

  Let’s try another:

  Dan was late, we left without him.

  In this case, the conjunction so fits the bill.

  Dan was late, so we left without him.

  Or you could use a semicolon.

  Dan was late; we left without him.

  Or you could make two sentences, especially if you want to sound blunt.

  Dan was late. We left without him.

  Are Comma Splices Ever OK?

  Yes! You should avoid comma splices in formal writing, but now that you know the rule, you can sometimes break it in more artistic types of writing.

  In fiction, for instance, you might use a comma splice to convey a character’s racing thoughts or observations.

  She was beautiful, she was gorgeous, she was ravishing.

  Comma splices can also create a sense of grandeur in rhetoric, but only if they’re used sparingly.

  I came, I saw, I conquered.

  And in poetry, of course, the rules are even more relaxed. Sometimes, a comma splice creates just the right rhythm.

  Do not go gentle into that good night, Old age should burn and rave at close of day…

  That’s it! Now you’re ready to get out there and use your commas with confidence.

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