ZERO CONDITIONAL

We use the zero conditional to talk about things that are generally true, especially for laws and rules.

Examples:

    If I drink too much coffee, I can't sleep at night.

    Ice melts if you heat it.

    When the sun goes down, it gets dark.

Zero Conditional Sentences: connect two clauses (both in the present simple tense), with the first clause introducing the condition (using 'if' or 'when') and the second clause explaining the result of the condition.

STRUCTURE

IF/When + Present simple sentence, present simple sentence.