Today, I am going to give a quick lesson about Double Negative
A double negative is produced when the negative form of a verb is combined with a negative pronoun. Simply put, it is the nonstandard use of two negatives in a sentence. For example:
• She is not unattractive
• I didn't see nothing.
In some languages, the more negatives, the better. However, two negatives are not acceptable in the English Language. A double-negative mistake can ruin your sentence because two negatives make a positive in English.
Most double negatives are obvious, but some are not. One example of such is:
• “I cannot help but ask for a raise."
In the above example, you might think what the individual means is “I have to ask for a raise" but what the sentence is saying is “I can’t ask for a raise."
When you remember that two negatives make a positive, it will help you avoid making the "double negative" grammar mistake.