MIXED TYPE "IF" CLAUSES
The common pattern of "mixed type" is If+Past Perf, would V1.When the action in the past affects the present situation, we use this form. In this case, there are present expressions such as now, today...etc.
I didn't pay for the bill and today I am in trouble.
If I had paid for the bill, I wouldn't be in trouble today.
I spent all my money foolishly, and I am broke now.
If I hadn't spent all my money foolishly, I wouldn't be broke now.
If I had been able to get high grades in Ktts, I wouldn't have to study so hard for the finalls now.
• If+ S.Past, would have V3 (type2=> type3)
He is a rude man, because he rebuked his wife in front of others at the circumcision ceremony yesterday.
If he weren't a rude man, he wouldn't have rebuked his wife in front of others at the circumcision ceremony yesterday.
• If + Present, would have V3 (type2=>type3)
If I can drive as carefully as you think, I shouldn't have caused an accident.