1. Conditionals

3. Zero conditional If + P.S. ... , P.S. ... .
This conditional is used when the result will always happen. In facts!
Ex: if water reaches 100 degrees, it always boils.
It's a fact. I'm talking in general, not about one particular situation.

4. Zero conditional General truth If people eat too much, they get fat.
Ex:
If people eat too much, they get fat.
If you touch a fire, you get burned.
People die if they don't eat.
If babies are hungry, they cry

6. First conditional If + P.S. ... , Will + V .
It's used to talk about things which might happen in the future. Of course, we can't know what will happen in the future, but this describes possible things, which could easily come true.
Ex: If it rains, I won't go to the park.

7. First conditional Ex: If I have enough money, I'll buy some new shoes.
If you help me, I will help you.
If you tell us the truth, we will forgive you.

8. Unless Unless = if not Ex: You'll be sick unless you stop eating. =
You will be sick if you don't stop eating.
Unless = if not