Run-On Sentences

A run-on sentence is a sentence that contains two improperly joined sentences. The two kinds of run-on sentences are comma splices and fused sentences.



 
Comma Splices
A comma splice occurs when two sentences are joined with only a comma.
Incorrect:The teacher told the students to complete the section on comma splices, she also told them to compose a five-page essay.



 
Fused Sentences
A fused sentence occurs when two sentences are joined without any punctuation.
Incorrect: First I went to the grocery store then I went to the library.



 
Four Ways to Correct Run-On a Sentence
Use a period.
The teacher told the students to complete the section on comma splices. She also told them to compose a five-page essay.
First I went to the grocery store. Then I went to the library.

 
Use a Semicolon.
The teacher told the students to complete the section on comma splices; she also told them to compose a five-page essay.
First I went to the grocery store; then I went to the library.

 
Use a comma and a coordinating conjunction (and, but, for, nor, or, so, yet).
The teacher told the students to complete the section on comma splices, but she also told them to compose a five-page essay.
First I went to the grocery store, and then I went to the library.

 
Add a subordinating conjunction or dependent word.
Although the teacher told the students to complete the section on comma splices, she also told them to compose a five-page essay.
After I went to the grocery store, I went to the library.

 
Common Subordinating Conjunctions or Dependent Words 
after even though when
although if whenever
as since where
as if so that whereas
as though though wherever
because unless whether
before until while

 
 
Take the Run-On Sentence Quiz

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