The four main types of conditionals are:
The Zero Conditional, the First Conditional, the Second Conditional, and the Third Conditional.Sometimes these are called Type 0, Type 1, Type 2, and Type 3 Conditionals.
Zero conditional refers to facts and general truths.
First conditional and Second conditional refer to the present or future. However second conditional sentences suggest it is less probable or imaginary.
Third conditional refers to the past.
Watch this video Conditionals Zero, First and Second type
full lesson on zero , first and second conditionals here and
third conditional here
1st Conditional
2nd Conditional
Third Conditional
Mixed Conditionals
Quiz time!
Do this quiz here