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Worksheet for identifying sentence types: sentence, fragment, or run-on.

A worksheet titled "Sentence, Fragment, or Run-on?" with instructions and 15 sentences for students to identify as complete sentences, fragments, or run-ons.

A worksheet titled "Sentence, Fragment, or Run-on?" with instructions and 15 sentences for students to identify as complete sentences, fragments, or run-ons.

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Show Answer Key & Explanations Step-by-step solution for: Sentences, Fragments, Run-on Sentences | Printable Skills Sheets
Let’s go through each sentence one by one and decide if it’s a Sentence (S), Fragment (F), or Run-on (R).

Remember:
- A Sentence has a subject and a verb and expresses a complete thought.
- A Fragment is missing a subject, a verb, or doesn’t express a complete thought.
- A Run-on happens when two complete sentences are joined without proper punctuation or connecting words.

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1. *Jumping on the bed.*
→ This is just a phrase — no subject, no full verb. It’s describing an action but not saying who did it or completing the thought.
Fragment (F)

2. *One of the stories ended happily.*
→ Subject: “One of the stories” | Verb: “ended” | Complete thought.
Sentence (S)

3. *Today is a lazy day I find hard to keep my mind on my work.*
→ Two complete thoughts: “Today is a lazy day” + “I find hard to keep my mind on my work.” No comma or conjunction between them → Run-on!
Run-on (R)

4. *The sun is shining It is a wonderful time to be outside.*
→ Again, two complete sentences stuck together: “The sun is shining” + “It is a wonderful time...” → Run-on!
Run-on (R)

5. *The music of the band.*
→ Just a noun phrase — no verb, no complete thought.
Fragment (F)

6. *Glittered in the moonlight and whispered in the wind.*
→ Missing subject! Who glittered? Who whispered? Looks like part of a sentence.
Fragment (F)

7. *He forgot where he was lost his temper.*
→ Two ideas: “He forgot where he was” + “lost his temper” — but they’re smashed together. Should be “He forgot where he was, and he lost his temper.” As written, it’s a run-on.
Run-on (R)

8. *Working together towards a common goal.*
→ Gerund phrase — no subject, no main verb. Not a complete thought.
Fragment (F)

9. *The telephone rang.*
→ Subject: “The telephone” | Verb: “rang” | Complete thought.
Sentence (S)

10. *In a minute.*
→ Prepositional phrase — tells time, but no subject or verb. Incomplete.
Fragment (F)

11. *The mayor of our town.*
→ Noun phrase — who? what did they do? Nothing said.
Fragment (F)

12. *Into*
→ Just a preposition. No subject, no verb, no meaning alone.
Fragment (F)

13. *Mr. Barnes spoke about pollution we had an interview afterwards.*
→ Two complete sentences: “Mr. Barnes spoke about pollution” + “we had an interview afterwards.” Stuck together → Run-on!
Run-on (R)

14. *Turning the corner on two wheels.*
→ Participle phrase — who turned? What happened? No subject or main verb.
Fragment (F)

15. *We ate lunch at a downtown café.*
→ Subject: “We” | Verb: “ate” | Complete thought.
Sentence (S)

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Final Answer:
1. F
2. S
3. R
4. R
5. F
6. F
7. R
8. F
9. S
10. F
11. F
12. F
13. R
14. F
15. S
Parent Tip: Review the logic above to help your child master the concept of fragments and run ons worksheets with answer key.
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