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The Twenty Most Common Errors


The reader needs the clause who wanted to preserve wilderness areas because it announces which people opposed the plan. As an essential element, the clause should not be set off by commas.


The reader needs to know which of Shakespeare's many tragedies this sentence is talking about. The title Othello is therefore essential and should not be set off by commas.


Check any words or phrases in your draft set off with commas to make sure that the element set off is not a restrictive element, one essential to the basic meaning of the sentence. Such essential words or phrases are not set off from the rest of the sentence with a comma or commas.