1. If I *had studied* harder, I would have passed the exam. (El verbo “had studied” indica una acción pasada que no ocurrió).
2. If she *had left* earlier, she would have caught the bus. (Usa “had left” para indicar la acción no realizada).
3. If they *had arrived* on time, we would have started the meeting. (El pasado perfecto “had arrived” señala la condición no cumplida).
4. If he *had told* me the truth, I wouldn’t have been angry. (El verbo “had told” muestra la condición irreal).
5. If we *had brought* more food, everyone would have eaten well. (Usa “had brought” para la condición que no se dio).
6. If you *had called* me, I would have helped you. (El “had called” muestra la acción hipotética no realizada).
7. If she *had gone* to the party, she would have met him. (El pasado perfecto “had gone” indica la condición pasada no cumplida).
8. If they *had known* about the problem, they would have fixed it. (El verbo “had known” indica una acción que no pasó).
9. If I *had saved* more money, I would have bought a car. (El “had saved” muestra la condición no cumplida).
10. If he *had practiced* more, he would have won the game. (“Had practiced” indica la condición hipotética en el pasado).

1. If I *had not missed* the train, I would have arrived earlier. (El “had not missed” muestra la negación en el pasado perfecto).
2. If she *hadn’t forgotten* her keys, she wouldn’t have been locked out. (Forma negativa del pasado perfecto “hadn’t forgotten”).
3. If they *had not argued*, they would have enjoyed the trip. (La negación “had not argued” indica la condición no cumplida).
4. If he *hadn’t been* sick, he would have come to the party. (Negación en pasado perfecto “hadn’t been”).
5. If we *had not lost* the map, we wouldn’t have gotten lost. (Forma negativa “had not lost” en pasado perfecto).
6. If you *hadn’t told* her, she wouldn’t have known the secret. (Negación “hadn’t told” en pasado perfecto).
7. If she *had not missed* the call, she would have answered. (Negación en pasado perfecto “had not missed”).
8. Would you *have helped* me if I had asked? (Pregunta en tercer condicional, “have helped” es la respuesta correcta).
9. What would they *have done* if it had rained? (Pregunta en tercer condicional, “have done” es la respuesta correcta).
10. If he *had not broken* the vase, we wouldn’t have been upset. (Negación en pasado perfecto “had not broken”).