Types
- Zero: If you heat ice, it melts. (facts)
- First: If it rains, we will stay in. (real future)
- Second: If I were rich, I would travel. (unreal present)
- Third: If I had studied, I would have passed. (past)
Form notes
- Use 'were' for all subjects in the second conditional.
Key idea
Conditionals show cause and result: zero (facts), first (real future), second (unreal present), third (unreal past).
Remember
First conditional: if + present, will + base verb.