Free worksheets · Grade 4
Fixing Run-On Sentences Worksheet
Rewrite each run-on correctly, as two sentences or with a comma and a joining word.
Free printable
Fixing Run-On Sentences
8 questions, one page, US Letter. Print it and do it on paper.
On the sheet: A run-on joins two sentences with no punctuation or joining word between them. Each of these is a run-on sentence. Rewrite it correctly.
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About this worksheet
A run-on joins two complete sentences with nothing between them: The bell rang we lined up. Each half could stand on its own, so the reader needs a signal where one ends.
There are two simple fixes: split it into two sentences with a period and a capital letter, or join the halves with a comma and a word like and, but or so.
A worked example
The bell rang we lined up for lunch.
- Find where the first complete thought ends: The bell rang.
- Split it with a period and a capital: The bell rang. We lined up for lunch.
- Or join it with a comma and a joining word.
Answer: The bell rang, so we lined up for lunch.
The common mistake
What it looks like: Fixing it with a comma alone: The bell rang, we lined up for lunch.
Why it happens: The comma matches the pause the child hears, so it feels like enough.
How to fix it: A comma can't hold two sentences together by itself. Add a joining word after it (and, but, so), or use a period.
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