FIRST CONDITIONAL, To talk about possible situations and their results., They make reference to the present or to the future., Structure = if + present simple, will + verb in the infinitive, Example: If you don't study, you won't pass the exam, ZERO CONDITIONAL , To talk something that is always true., To talk about scientific facts, Structure= if + present simple, present simple., Example: If we heat water to 100ºC, it boils..

Zero and First Conditional

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