Second Grade English: Fixing Run-On Sentences
When you get excited about telling a thrilling story, your thoughts tumble out of your mind in a giant rush. In spoken conversation, you can catch your breath, but on paper, letting sentences collide without proper stopping signals creates a chaotic traffic accident of words! In grammar, when two or more complete thoughts are squished together without proper punctuation or conjunctions, it is called a run-on sentence. Another common error is a comma splice, where a writer uses only a comma to join two sentences. In this chapter, you will master diagnosing run-on sentences and learn three reliable methods to fix them.
What Is a Run-On Sentence?
A run-on sentence is not simply a very long sentence; it is a sentence where two independent thoughts collide without the necessary grammatical boundaries.
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| RUN-ON SENTENCE TRAFFIC CRASH |
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| |
| Thought 1: [ The ferocious tiger growled ] |
| | (CRASH!) |
| Thought 2: [ the terrified deer leaped into the forest ] |
| |
| The two thoughts run into each other with NO punctuation |
| stopping them! |
| |
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The Comma Splice Trap
A comma splice occurs when a writer notices the two thoughts colliding and inserts a lonely comma between them: "The tiger growled, the deer leaped." A comma is a gentle pause; it is NOT strong enough to glue two complete sentences together all by itself!
The Three Reliable Cures for Run-On Sentences
Whenever you spot a run-on sentence or comma splice in your draft, you have three professional tools to fix it.
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| THREE CURES FOR RUN-ON SENTENCES |
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| Run-On: "We visited the sunny beach we built a giant castle." |
| |
| CURE 1: SEPARATE INTO TWO DISTINCT SENTENCES |
| Add a period and a capital letter! |
| --> "We visited the sunny beach. We built a giant castle." |
| |
| CURE 2: JOIN WITH A COMMA AND A CONJUNCTION |
| Add a comma and the bridge word "and", "but", or "so"! |
| --> "We visited the sunny beach, and we built a giant castle." |
| |
| CURE 3: USE A SUBORDINATING WORD (BECAUSE / WHEN) |
| --> "When we visited the sunny beach, we built a giant castle."|
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Which Cure Should You Choose?
If the two thoughts are long or describe completely different moments, choose Cure 1 (separate into two sentences with a period). If the two thoughts are closely linked and happen together, choose Cure 2 (comma + coordinating conjunction). Varying how you fix run-on sentences gives your paragraphs rich rhythm and variety!
The Breath Test for Detecting Run-Ons
When reading your own writing during editing time, read aloud at a natural conversational speed: If you run out of breath before you see an end mark, stop! Look closely at the words: are there two separate subjects doing two separate things? If so, you have found a run-on!
Practice Exercises
Exercise 1: Identify whether each item is a Correct Compound Sentence, a Run-On, or a Comma Splice: Item A: "The thunder rumbled loudly the lightning flashed." Item B: "The soup was boiling hot, so I waited for it to cool." Item C: "Maya loves reading books, she visits the library every Friday."
Exercise 2: Fix this run-on sentence using two different methods: "The rain stopped the sun came out."
Exercise Solutions
Solution to Exercise 1: Item A is a Run-On (no punctuation or conjunction between thoughts). Item B is a Correct Compound Sentence (uses comma and conjunction so). Item C is a Comma Splice (joins two complete thoughts with only a comma).
Solution to Exercise 2: Method 1 (Two separate sentences): "The rain stopped. The sun came out." Method 2 (Compound sentence with comma and conjunction): "The rain stopped, and the sun came out."