Punctuating Complex Sentences

Front

What is a complex sentence?

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A complex sentence is a sentence that contains one independent clause and at least one dependent clause.

Front

When should you use a comma in a complex sentence?

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Use a comma before a coordinating conjunction that connects two independent clauses, and after an introductory dependent clause.

Front

What is an independent clause?

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An independent clause is a group of words that can stand alone as a sentence; it has a subject and a verb.

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What is a dependent clause?

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A dependent clause is a group of words that cannot stand alone as a sentence; it does not express a complete thought.

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Example of a complex sentence with a dependent clause at the beginning.

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"Before the sun sets, we should head home."

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Example of a complex sentence with a dependent clause at the end.

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"We should head home before the sun sets."

Front

What punctuation is needed after an introductory dependent clause?

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A comma is needed after an introductory dependent clause.

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What is the rule for punctuating a complex sentence with a dependent clause at the end?

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If the dependent clause comes at the end of the sentence, no comma is needed.

Front

Identify the error: "Although it was raining we decided to go for a walk."

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A comma is needed after "raining" to separate the dependent clause from the independent clause.

Front

What is the purpose of using commas in complex sentences?

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Commas help clarify the meaning of sentences and indicate pauses.