Some information

Hi everyone, I would like saying that the class is one of the best I have taken, I really like it and enjoy it. On the other hand, I have seen that we have some troubles with the topic in which we are working, for that reason I decided to make a little list with some rules about conditionals, perhaps most of you have or know these, but it´s just to refresh and give a reference to solve our doubts.

ZERO CONDITIONAL: IF CLAUSE: simple present MAIN CLAUSE: simple present
A situation normally true.
Example: If I run, I get tired. You know I somoke 40 cigarretes a day.

FIRST CONDITIONAL: IF CLAUSE: simple present MAIN CLAUSE: future
Example: If I study for my test, I will get a good grade.

SECOND CONDITIONAL: IF CLAUSE: simple past MAIN CLAUSE: would + present simple
Hypothetical situation
Example: If I were prince, I wolud live in a castle.

THIRD CONDITIONAL: IF CLAUSE: past perfect (had + past participle) MAIN CLAUSE: would have, could have, might have + past participle.
Hypothetical situations in past
Example:If he had given up smoking, he might not have got lung cancer.

FOURTH CONDITIONAL (MIXED):IF CLAUSE: past perfect MAIN CLAUSE: would + present. Another case is IF CLAUSE: simple past MAIN CLAUSE: would have + past participle
Present a past situations
Example:If I had time, I would go with you.
He would have lent you the money, if he were sure you were going to pay him back.

I hope this helps us to understand better.