The word "haven't" is an abbreviation of "have not" (the apostrophe takes the place of the letter "o").
You can, therefore, use "haven't" in any situation where you can use "have not." Here's an example:
"We have not eaten peaches since the summer began" is exactly the same as "We haven't eaten peaches since the summer began."
It means that you, or whoever. does not have something. To have is to be in possession of something so haven't means not to be in possession of something. It is lazy English really. You should always say, or write, have not. Probably started by Americans - they have started most of the lazy shortcuts in the English language.
Haven't is a contraction, suitable for speech or in written dialogue. "You haven't seen my hat, have you?" she asked.
haven't you already took that last year
Haven't you heard?
Bang bang bangity bang!
b-bang bang bangity bang!
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1. Until now i haven't been to London. 2. What have you been doing until now? 3. Until now i havent tried Chinese food.
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