In this section you will find information on sentences containing the word ‘if’, the use of conditional tenses, and the ‘unreal past’, that is, when we use a past tense but we are not actually referring to past time.
1. The ‘zero’ conditional, where the tense in both parts of the sentence is the simple present:
|IF’ CLAUSE||MAIN CLAUSE|
|If + simple present
If you heat ice
If it rains
you get wet
In these sentences, the time is now or always and the situation is real and possible. They are often used to refer to general truths.