The some- set of determiners are non-assertive

He could have told me as a complaint can be negated with couldn't have

Hearers will assume that the negated item is the final one in the clause

Negation will be of the whole clause in which the negated verb appears

They don't believe she is serious is an example of transferred negation

Negative questions are often used to express disappointment

In the initial position, negators such as never require the simple inversion of subject and verb

I deny any dishonesty is an example of an assertive form

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