2. This conditional refers to a situation that is
always true.
If clause main clause
If + Present tense Present tense
If you freeze water it turns into ice.
3. Se emplea cuando una situación es real o
posible.
If clause Main clause
If + Present tense will / can
/may
/must+
verb
If it rains today, I'll stay at home.
4. It refers to a hypothetical situation and the
structure is formed by simple if + simple
past + conditional.
If clause Main clause If +
Past Simple would / could
might + verb
If I won the lottery, I would travel around the world.