| 0 Conditional / Present Real |
If it rains, the streets get wet. If I'm tired, I go to bed. |
Present + Present |
Present (always) |
| 1st Conditional / Future Real |
If it rains tomorrow, I'll bring my umbrella. |
Present + Future |
Future (real possibility) |
| 2nd Conditional / Future & Present Unreal |
If I won a million dollars, I would buy a boat. If I were the president, I would lower taxes. |
Past + would/could/might + base form |
Future (unlikely) Present unreal situations |
| 3rd Conditional / Past Unreal |
If I had gone to the party yesterday, I would have met many people. |
Past Perfect + Perfect Modal |
Past unreal situations |
| Mixed Conditional |
If I had gone to the party, I would be tired now. |
Past Perfect + would/could/might + base form |
Past condition giving a present result |