Mixed conditional forms :

(If + subject + past perfect, subject + would + infinitive (verb 1) / If + subject + past simple,  subject + would have + past participle (verb 3) )

In mixed conditionals, the 'main clause' and the 'if clause' sometimes refer to a different period of time.

The most common combinations are second and third conditionals.

Example Sentences of Mixed Conditionals :

• If I hadn't had a tattoo, I wouldn't be disappointed now. (If clause refers to the past, main clause refers to the present)
• If I had remembered to lock the door, we would still have our TV. (If clause refers to the past, main clause refers to the present)
• If they weren't so skilled at their jobs, they would have been fired long ago. (If clause refers to the present, main clause refers to the past)
• If I hadn't lost my passport, I'd be leaving tonight. (If clause refers to the past, main clause refers to the future)