Conditionals
The clauses are two parts of a sentence, separated by a comma, that conform it (conditionals). For it there are rules that are the next ones:
Zero conditional degree: Both clauses have to be in simple present, and you have to be 90% sure that what you are saying it’s going to happen. One clause is the “if clause (condition)” where you put if and the verb or the action that you do, the other clause is called the “resolution clause” where you give the result of the last action.
First conditional degree: One clause has to be in simple present describing what happens and putting if, and the other one you put the simple future, will, and you put the base verb. The sentence in this conditional has to be a real possibility to happen.
Second conditional degree: This sentence is unreal possibility or dream. We are still thinking about the future, and giving the result to the conditional but it is very difficult that happens, or can be a dream too that if happen something you do what you dream, for example, if I win the lottery, I travel to Europe. You have to put the condition with the “if” and the simple past, and the result clause you put “would” and the base verb.
Third conditional degree: With the third conditional we talk about the past, we talk about a condition in the past that don’t happen, so that means that there is no possibility. For make a sentence with third conditional you put the condition with the “if” and the past perfect in one clause and in the other one you put “would have” and past participle, to talk about the impossible past result.



