ZERO CONDITIONAL The Zero Conditional: (if + present simple, . . . present simple) If you heat water to 100 degrees, it boils.
FIRST CONDITIONAL The First Conditional: (if + present simple, . . . will + infinitive) If it rains tomorrow, we'll go to the cinema.
SECONDITIONAL The Second Conditional: (if + past simple, . . . would + infinitive) If I had a lot of money, I would travel around the world.
THIRD CONDITIONAL The Third Conditional (if + past perfect, . . . would + have + past participle) If I had gone to bed early, I would have caught the train.
The Zero Conditional: (if + present simple, . . . present simple) The First Conditional: (if + present simple, . . . will + infinitive) The Second Conditional: (if + past simple, . . . would + infinitive) The Third Conditional (if + past perfect, . . . would + have + past participle)
If I ____ stronger, I'd help you carry the piano. If we'd seen you, we ____. If we ____ him tomorrow, we'll say hello. He would have repaired the car himself if he ____ the tools. If you drop the vase, it ____. If I hadn't studied, I ____ the exam. I wouldn't go to school by bus if I ____ a driving licence. If she ____ him every day, she'd be lovesick. I ____ to London if I don't get a cheap flight. We'd be stupid if we ____ him about our secret.
MIXED CONDITIONALS HAD + PAST PARTICIPLE / WOULD + INFINITIVE IMAGINARY PAST WITH A PRESENT RESULT PAST SIMPLE / WOULD + HAVE + PAST PARTICIPLE HYPOTHETICAL PRESENT WITH A PAST RESULT