Examples of presupposition.

Factive.

Bob does not regret that he beat his dog.

Presupposition: Bob beat his dog.

Aspectual.

Bob has not stopped beating his dog.

Presupposition: Bob has been beating his dog.

Implicative.

Bob did not manage to train his dog.

Presupposition: Training the dog would require effort.

Iterative

The dog bit Bob again today.

Presupposition: The dog bit Bob before.

Cleft

It was Bob that the dog bit.

Presupposition: The dog bit someone.

Even Bob beat the dog.

Presupposition: Others beat the dog and Bob was the least likely to have done so.

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