
Identify run-on sentences
Free printable Grade 9 English worksheet for "Identify run-on sentences" — practice sentences, fragments, and run-ons (grammar and mechanics). No-prep, print or assign online.
This worksheet challenges high school students to pinpoint run-on sentences amidst mixed examples, enhancing their grammar and mechanics skills. Teachers can use this resource to reinforce lessons on sentence structure and punctuation, promoting critical thinking about sentence clarity. Ideal for grammar practice, editing exercises, and preparing students for advanced writing assessments.
Learning objectives
- Identify run-on sentences within a variety of complex sentence structures
- Differentiate between run-on sentences, fragments, and correctly punctuated sentences
- Correct run-on sentences by applying appropriate punctuation and conjunctions
Answer Key

How to use this worksheet
- Click “Download Worksheet” to get the PDF — free with a KiwiBee account (up to 50 downloads a month).
- Print at home or in class for High School; it's no-prep, with no extra materials needed.
- Use the included answer key to mark it in seconds.
Frequently asked questions
Is the “Identify run-on sentences” worksheet free?
Yes. “Identify run-on sentences” is a free printable English & Reading worksheet. Sign in with a free KiwiBee account to download the PDF — it includes up to 50 downloads a month.
What grade or age is this English & Reading worksheet for?
It's designed for High School (ages 14–18), covering Sentences, fragments, and run-ons.
Does it come with an answer key?
Yes — a matching answer key is included so you can grade it in seconds.
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