A double negative is an error that occurs when two forms of negation are used in one clause. The two negatives cancel one another, producing an opposite (in other words, positive) meaning. For example, if you say “I didn't hear nothing,” you're actually saying “I heard something.” To correct the double negative, you could say “I didn't hear anything” or “I heard nothing.”
See if you can spot the double negatives, and indicate whether the sentences below are correct or incorrect.