English Grammar - Negation

Negation

As noted above under Verbs, a finite indicative verb (or its clause) is negated by placing the word not after an auxiliary, modal or other "special" verb such as do, can or be. For example, the clause I go is negated with the appearance of the auxiliary do, as I do not go (see do-support). When the affirmative already uses auxiliary verbs (I am going), no other auxiliary verbs are added to negate the clause (I am not going). (Until the period of early Modern English, negation was effected without additional auxiliary verbs: I go not.)

Most combinations of auxiliary verbs etc. with not have contracted forms: don't, can't, isn't, etc. (Also the uncontracted negated form of can is written as a single word cannot.) On inversion of subject and verb (such as in questions; see below), the subject may be placed after a contracted negated form: Should he not pay? or Shouldn't he pay?

Other elements, such as noun phrases, adjectives, adverbs, infinitive and participial phrases, etc., can be negated by placing the word not before them: not the right answer, not interesting, not to enter, not noticing the train, etc.

When other negating words such as never, nobody, etc. appear in a sentence, the negating not is omitted (unlike its equivalents in many languages): I saw nothing or I didn't see anything, but not (except in non-standard speech) *I didn't see nothing. Sometimes, multiple negations are used for humorous purposes, and are understood to follow the rules of multiplying negative numbers in math: an even number of negations, including zero, means a positive, while an odd number means a negative. For example, There is not no cow over there is understood to mean there is at least one cow, which is positive. He didn't never not bow after a performance is understood to mean there has been at least one instance of him not bowing, which is negative.