Correct Punctuation between Dependent & Independent Clauses

5.         A dependent clause does not express a complete thought; it is a fragment.
           (Hint: Dependent clauses begin with danger words.)

           a.         A bare comma is correct after a dependent clause introducing an independent
                       clause.
                      sentence        After the holidays are over ,  many stores will have sales.
                                               DW     (dependent  clause)     (independent clause)

           b.         A dependent clause at the end of an independent clause usually needs no
                       punctuation.
                      sentence        Al ruined his lawn mower  because he never changed the oil.
                                                 (independent clause)            DW     (dependent clause)

Overview of Correctly Joined Dependent & Independent Clauses

Correct

After the lightning flashed across the sky
dependent clause
danger word – subject – verb

,
comma

the thunder roared menacingly.
independent clause
subject – verb

Correct

The lightning flashed across the sky
independent clause
subject – verb

no punctuation

before the thunder roared.
dependent clause
danger word – subject – verb

 

Other Comma Uses

6.        Every comma in a sentence is not a comma splice error. There are many reasons to use
           commas correctly within dependent or independent clauses. Study the examples below of
           correct commas. These commas are all correct and have specific reasons for being in the
           sentences; these commas are not joining clauses.
           a.         Her home is in Homestead; address the letter to 123 West Avenue, Miami, FL 32333.
                                  These commas are correctly used to separate the parts of an address.

           b.         Yes, you may still write your paragraph.
                                 This comma is correctly used to follow a one–word introduction.

           c.         During World War II, many American women began working outside the home.
                                  This comma is correctly used to follow a prepositional phrase introduction.

           d.         Being a music lover, John bought a season ticket for the concerts.
                                  This comma is correctly used to follow a participial phrase introduction.

           e.         To save money for my vacation, I am giving up movies and snacks.
                                  This comma is correctly used to follow an infinitive phrase introduction.

           f.          The committee must work together on the food, the decorations, and the entertainment.
                                  These commas are correctly used to separate the items in a list.