Respuesta:
1. If they had learned Spanish, they would have gone to Colombia.
2. She would have tried pizza if she had gone to Italy.
3. If I had bought the lottery, I would have earned money.
Explicación:
El Third Conditional del grupo de los Conditionals, se refiere a las acciones del pasado, que pudieron haber pasado.
Estructura:
1. If + sujeto + had + verbo en past participle + , + sujeto + would/could/might + have/has + verbo + complemento
2. Sujeto + would/could/might + have/has + verbo + , + if + sujeto + had + verbo en past participle + complemento.
Estas dos formas de como crear las oraciones en el condicional tercero son posibles, aunque suele utilizarse el primer punto. El main clause va separado por una coma del if-clause.
