Simple Negation:
* I don't like pizza.
* The cat isn't sleeping.
* He didn't go to the party.
Negation with "No":
* No one knows the answer.
* There are no cookies left.
* I have no idea what you're talking about.
Negation with "Never":
* I have never been to Paris.
* She never eats meat.
* We will never forget this day.
Negation with "Neither...nor":
* Neither John nor Mary is going to the concert.
* I like neither apples nor oranges.
Negation with "Not...any":
* I don't have any money.
* There aren't any books on the shelf.
* We didn't see any birds.
Negation with "Not...at all":
* I don't understand this at all.
* He's not happy at all.
* The movie wasn't scary at all.
Double Negation:
* I don't have no time. (This is technically incorrect but sometimes used in informal speech)
Emphatic Negation:
* I absolutely do not want to go.
* By no means will I agree to this.
* Under no circumstances should you do that.
These examples demonstrate the various ways to form negative sentences in English. Remember that negative sentences are used to express the absence of something, to deny a statement, or to express a contrary opinion.