Run-on Sentence and
Comma Splice
Ms. Jessa C. Cartel
Grade 8
Run-on Sentence
• It contains two independent clauses that have
been incorrectly joined together. It occurs when a
writer puts no mark of punctuation and no
coordinating conjunction between independent
clauses.
Example:
• The flowers are beautiful they brighten the room.
First complete sentence
Second complete sentence
(Incorrectly joined)
Three (3) Ways to fix it:
• 1. ADD PERIOD
Example:
The flowers are beautiful. They brighten
the room.
• 2. ADD A COMMA AND A COORDINATING
CONJUNCTION
(FANBOYS)
Example:
The flowers are beautiful, and they brighten
the room.
FANBOYS
• FOR
• AND
• NOR
• BUT
• OR
• YET
• SO
3. ADD A SEMICOLON
EXAMPLE:
The flowers are beautiful; they brighten the room.
Let’s have another example! 
Incorrect: Psychohistory is a relatively new type of
study it combines the insights of psychology with
the data of history.
Correct: Psychohistory is a relatively new type of
study; it combines the insights of psychology with
the data of history.
Incorrect: “You” is a second person pronoun
rarely used in the South most Southerners use
“y‘all” instead.”
Correct: “You” is a second person pronoun rarely
used in the South; most Southerners use “y‘all”
instead.”
Let’s Review!!!
3 Ways to correct a run-on:
• ADD PERIOD. The flowers are beautiful. They brighten the room.
• ADD A COMMA AND A COORDINATING CONJUNCTION
(FANBOYS).
The flowers are beautiful, and they brighten the room.
• ADD A SEMICOLON.
The flowers are beautiful; they brighten the room.
COMMA SPLICE
• It occurs when two or more independent clauses
are joined by just a comma and no coordinating
conjunction.
• We need a (FANBOYS) to help out.
Coordinating Conjunctions
• FOR
• AND
• NOR
• BUT
• OR
• YET
• SO
COMMA SPLICE
Ex:
• Incorrect: The flowers are beautiful, they brighten the room.
(Improperly joined with only a comma)
• Corrected sentence: The flowers are beautiful, and they brighten the
room.
Let’s have another example! 
Incorrect: This company has never printed
novels, textbooks are its principal publication.
Correct: This company has never printed
novels; textbooks are its principal publication.
Incorrect: Wearing a seat belt is not just a good
idea, it’s the law.
Correct: Wearing a seat belt is not just a good idea;
it’s the law.
INDIVIDUAL ACTIVITY
(For those who have books)
Answer in your books:
Exercise 2 on page 21.
INDIVIDUAL ACTIVITY
(For those who doesn’t have books yet.)
Correct these run-on sentences.
1. It was raining hard there was a strong wind.
2. Elena came to the meeting but Pablo stayed home.
Correct the comma splices.
3. John is a good swimmer, Jane is a good runner.
4. Mary opened the door, Jack went for the snacks