Ben kahve içmiyorum.
English: I am not drinking coffee.
In Turkish, there are different ways to make negative sentences, called 'types of negation structures'. These structures help you say that something does not happen, does not exist, or is not true.
You use these forms to say something is not true, to deny actions or states, or to express absence. For example, when you want to say you do not do something, someone is not something, or something never happens.
Ben kahve içmiyorum.
English: I am not drinking coffee.
Ali burada değil.
English: Ali is not here.
O, sabahları erken kalkmaz.
English: He/She does not get up early in the mornings.
Hiç kitap okumadım.
English: I have never read a book.
Bu kolay değil.
English: This is not easy.