What is a Run-on Sentence? Simple Guide to Fixing Common Grammar Mistakes

What is a Run-on Sentence?

A run-on sentence occurs when two or more independent clauses (complete thoughts) are joined without proper punctuation or connecting words. It makes writing confusing and difficult to read.

Examples of Run-on Sentences

Incorrect: I love writing it helps me express my thoughts.
Correct: I love writing because it helps me express my thoughts.
Correct: I love writing. It helps me express my thoughts.

Types of Run-on Sentences

• Fused Sentence: Two independent clauses joined with no punctuation (e.g., “She loves coffee she drinks it daily.”).
• Comma Splice: Two independent clauses joined only by a comma (e.g., “She loves coffee, she drinks it daily.”).

How to Fix Run-on Sentences

• Use a period to separate sentences.
• Add a comma and a coordinating conjunction (and, but, or, so).
• Use a semicolon to link closely related ideas.
• Rewrite sentences using subordination (e.g., “Although she loves coffee, she limits her intake.”).

Tips for Clear Writing

• Read your sentences aloud to catch long, confusing structures.
• Focus on one idea per sentence.
• Use punctuation to signal natural pauses.