A sentence that has an original statement with quotation marks may also have a comma?

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Answers.com > Wiki Answers > Categories > Jobs and Education > Education > Educational Methods and Theories > Learning Theories > A sentence that has an original statement with quotation marks may also have a comma?

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A sentence that marks a statment?  Do you add a comma after a quotation mark?  Does a comma come after or before quotation marks?  Can a sentence that has an original statement with quotation marks also have a comma?