if i'd studied harder , I would have passed that test.
I should have said what I thought about her hairstyle, but i didn't want to hurt her feelings.
I should have bought that thing last year ; now prices have gone up.
if i had been more careful , I would have avoided the accident.
i should have told the security guard that i saw someone shoplifting.
if i'd i'd know the trip was going to take so long , i would have taken another route.
Other after - thoughts