Punctuating Complex Sentences

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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 to separate the independent clause from the dependent clause when the dependent clause comes first.

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What is a dependent clause?

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A dependent clause is a group of words that has both a subject and a verb but does not express a complete thought.

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What is an independent clause?

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An independent clause is a group of words that contains a subject and a verb and expresses a complete thought.

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

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"Because it was raining, we stayed indoors."

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

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"We stayed indoors because it was raining."

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 sentences with 'because'?

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If 'because' introduces a dependent clause that follows an independent clause, no comma is needed.

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When is a comma not needed in a complex sentence?

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A comma is not needed when the independent clause comes first and is followed by a dependent clause.

Front

What is the purpose of using commas in complex sentences?

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Commas help clarify the meaning of sentences by indicating pauses and separating ideas.