Self-Editing Tip #13: Commas > Clauses

The Comma Continued: Clauses

The last subtopic of commas are clauses. We’ve already discussed how independent clauses need a comma and conjunction, or a semicolon, in order to be joined into one sentence to avoid a comma splice. Dependent clauses also require commas in order to join with a complete sentence. They cannot stand alone because they are not complete sentences, hence the name dependent. They depend on the rest of the sentence to be whole. A dependent clause can be an adverbial, nominal, or adjectival.

• Adverbial—functions as a modifier of a verb

Purpose of Adverbial	Word
Time	After, as, as long as, as soon as, before, now, now that, once, since, till, until, when, whenever, while
Concession	Although, even though, if, though, while
Contingency	If, once
Condition	As long as, if, in case, provided that, unless
Reason	As long as, because, since
Result	So, so that
Comparison	As, as if, just as
Contrast	Whereas, while
	Source: Kolln, Martha and Loretta Gray. Rhetorical Grammar: Grammatical Choices, Rhetorical Effects. 6th ed. New York: Pearson Education, 2010. Print.

• Nominal—Functions like a noun or noun phrase

Type of Nominal	Definition
Appositive	Renames the subject of the sentence and adds information about it Ex. The car that hit me, the blue Volvo, was totaled.  *Note—sometimes a colon is used to introduce an appositive, but only after a complete independent clause. Ex. I’ll always have a soft spot for my first car: a silver Ford Escort.
Sentence Appositive	Renames or condenses the idea of the sentences as a whole into a dependent clause. Unlike other appositives, this kind is punctuated with an Em-Dash.Ex. The movie premiere was packed with A-list stars and busy photographers—a glamorous and expensive affair.
Dangling Gerund	When a verb phrase opens the sentence it requires a comma to join it. Ex. To exit the building, take a left at the bottom of the staircase.
	Source: Kolln, Martha and Loretta Gray. Rhetorical Grammar: Grammatical Choices, Rhetorical Effects. 6th ed. New York: Pearson Education, 2010. Print.

• Adjectival—Functions as a modifier of a noun

Type of Adjectival	Definition
Adjective Phrase	When an adjective follows the subject of a sentence, it is set off by commas Ex. The basketball team, tall and lanky, practiced endlessly.
Moveable Participle	When an adjectival phrase is moved to the beginning of a sentence in order to modify the subject, it is set off by a comma Ex. Hurrying in the morning, I tried my best to leave on time. Because it is a moveable participle, the phrase can also come at the end of a sentence, also set off by a comma. Ex. I tried my best to leave on time, hurrying in the morning.
	*Note—A participle refers to both the present and past forms of a verb when functioning as adjectivals. Present Pariciple= the –ing (gerund) form of a verb  Past Participle=the form of the verb used with “have” to form active voice and “be” to form passive voice
	Source: Kolln, Martha and Loretta Gray. “Coordination and Subordination.” Rhetorical Grammar: Grammatical Choices, Rhetorical Effects. 6th ed. New York: Pearson Education, 2010. Print.