Reading & Writing
Grades 6–9 · Grammar

How to fix a run-on sentence.

A run-on happens when two complete thoughts get jammed together without the right punctuation. The skill is finding where one thought ends and the next begins. Study Butler helps your kid spot that seam, then pick a real fix.

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Here is what that looks like.

Study Butler will not print the answer. It points at the next step and lets your kid take it.

An example. The butler answers the question with a question.

my teacher says this is a run-on but it looks fine to me.

find the complete thoughts inside it. how many sentences in there could stand on their own.

two, i think.

so what is joining them. if it is only a comma, that is the run-on. what could fix the join.

Where students get stuck.

The same few mistakes come up again and again. Here is where the butler slows things down.

01Not spotting the two separate thoughts

A run-on hides two complete sentences. Study Butler has your kid find where one thought ends, which is the first step to fixing it.

02Joining thoughts with only a comma

A comma alone cannot hold two complete sentences together; that is a comma splice. The butler shows the fix: a period, a semicolon, or a joining word.

03Thinking long means run-on

Length is not the issue, structure is. A long sentence can be correct, and a short one can be a run-on. Study Butler keeps your kid focused on the joins, not the length.

Bring the problem they're stuck on.

Type it, say it, or snap a photo. Study Butler walks your kid to the answer one question at a time, so they learn it instead of copying it.

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Questions parents ask.

What is a run-on sentence?
It is two or more complete thoughts joined without the right punctuation or connecting word. Study Butler helps your kid find where the thoughts collide rather than just guessing.
How do you fix a run-on sentence?
Split it with a period, join the thoughts with a semicolon, or add a connecting word like and or because. The butler helps your kid pick the fix that fits the meaning.