Zero conditional:- If + present simple —> present simple
- Possible situation and its result
- If it rains, the grass gets wet.
First conditional:
- If+ present simple—> will/ might/ going to
- If clause, main clause / main clause if clause
- If you don’t get into university, will you look for a job?
UNLESS:- If not = unless—> negative sentences
- Unless you study, you won’t pass the exam
Second conditional:
- Imaginary situation and its result
- If+ past simple or past continuous—> would+inf/ could+inf
- If I were you, I would not go drive that fast.