Explain the structure of conditionals:

We have four types of conditonal Zero conditonal, First conditional, Second conditional, Third conditonal.

a) Zero conditional: We use the present simple tense to talk about the condition and the result.
If - present simple - present simple.
Ex: If I eat sugar, I feel bad.


b) first conditional: We use the present simple tense to talk about the possible future result.
If - present simple - Will
Ex: If I study hard, I will have a good grade.

c) Second conditional: We use the past simple tense to talk about the future condition. We use would base the verb to talk about the result.
If - past simple - would
Ex: If I win the lottery, I would travel around the world.

d) Third conditonal: We use the past perfect tense to talk about the impossible past condition.
If - past perfect - would have + past participle.
Ex: If we had run, we would have won.