Understanding Zero Conditional

The zero conditional is used to describe situations that always occur under certain conditions, as well as to express universal truths. For example, when discussing chocolate, it was noted that if someone eats chocolate, they always get a headache, which is a consistent outcome. This structure is characterized by two parts: the first part includes 'if' plus the present simple tense, while the second part also uses the present simple to indicate the result of the condition. An example provided is that if you drop an apple, it falls to the ground, which reflects a scientific fact about gravity.