肯定式： I would/should have worked
you would have worked等
否定式： I would not/should not have worked等
疑问式： would/should I have worked?等
否定疑问式： should I not have/shouldn’t I have worked?
would you not have/wouldn’t you have worked?
I hope he will have finished before we get back.
I hoped he would have finished before we got back.