Mixed conditionals are used when a past change, changes a present result or a present change, changes a result in the past.
Past/Present
Here we look at an example where a past change effects a current situation.
If I hadn’t met him, I wouldn’t have gotten this job.
Structure: If + past perfect +___+ would + infinitive.
Present/Past
This example talks about how a different situation now would mean that the past was also different.
It’s not that bad. If it was, I would have been really angry.
Structure: If + past simple + _____ + would have + past participle.