GRAMMAR SECTION: THE ZERO CONDITIONAL
The conditional tenses show cause and effect. They always have two or more clauses. The clause with if creates the condition and the other clause tells us the result.
There are four different conditional tenses: zero, the first, the second and the third conditional. The zero conditional tells us about general conditions and effects and all of the clauses are in the present tenses.
if + present, + present
- If people don’t make mistakes, they don’t
- If the teacher has not closed his book the class has not ended.
We can also form the zero conditional with when instead of if.
- When people don’t make mistakes, they don’t
The order of the clauses can also be changed.
- People don’t learn if they don’t make mistakes.
The zero conditional does not use future tenses or the imperative. Those are part of the first conditional.