Lesson 78
Commas and Compound Sentences
Use
commas
between the main clauses in a compound sentence.
Place a comma before a
coordinating conjunction (
and, but, or, nor, yet, or
for) that joins two main clauses.
Irish playwright John Millington Synge is known for his dramas about rural Irish life,
and
his play The Playboy of the Western World has become a classic.
You may omit the comma between very short main clauses
that are connected by a
coordinating conjunction, unless the comma is needed to avoid confusion.
Jose opened the refrigerator and he took out the peanut butter. (clear)
Jose opened the refrigerator and the peanut butter fell on the floor. (confusing)
Jose
opened the refrigerator, and the peanut butter fell on the floor. (clear)
Exercise 1
Add commas as needed. Cross out commas used incorrectly, using the delete ( )
symbol. If the sentence is correct as written, write C in the blank.
Heracles has been portrayed in several movies
,
and his
name has come to stand for
someone of immense strength.
1. Ancient Greek mythology tells of many great heroes
but the
greatest of all must surely
be Heracles.
2. This mighty warrior’s father was Zeus, and his mother
was a mortal woman named
Alcmene.
3. Many Greek mythological figures were characterized as the children of gods and
mortals
and they were known as “demigods.”
4. Zeus’s
wife Hera became angry, when she learned of the baby born to a mortal woman.
5. Zeus named his son Heracles (“glory of Hera”)
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