Run-On Sentences What is a Run-On Sentence? A run-on sentence is 2 or more sentences that are NOT joined correctly. Run-on sentences are a COMMON mistake in writing! BE ALERT!!! Examples of Run-On Sentences: My dog ran down the road after a cat then I ran after him. This sentence goes on and on and on! American Idol is coming on TV soon I am so excited to see it again. This sentence is actually 2 sentences thrown together! More examples: My little brother took a candy bar from the store my mom didn’t let him play the Wii for a week. This is 2 sentences thrown together! I went to Disney World last summer it was so much fun. This is 2 sentences in one! How to avoid Run-Ons 1) Put a period at the end of the first sentence. WRONG: My dog ran down the road after a cat then I ran after him. RIGHT: My dog ran down the road after a cat. Then I ran after him. How to Avoid Run-Ons 2) Use a comma and a conjunction to combine the sentences correctly. Conjunctions may be: for, and, nor, but, or, yet, or so WRONG: I went to Disney World last summer it was so much fun. RIGHT: I went to Disney World last summer, and it was so much fun. How to Avoid Run-Ons 3) Use a semicolon between the sentences to combine them correctly. WRONG: I saw my favorite band in concert, they were so awesome! RIGHT: I saw my favorite band in concert; they were so awesome!