Conditional Perfect

Signal words	Use	Form	Examples affirmative	Examples negative	Examples interrogative
	sth. that might have happened in the past (It's too late now.) main clause in type III of the if clauses	would + have + past participle* *(infinitive + -ed) or (3rd column of table of irregular verbs)	I would have worked.	I wouldn't have worked.	Would I have worked?
			He would have worked.	He wouldn't have worked.	Would he have worked?
			I would have gone.	I wouldn't have gone.	Would I have gone?
			He would have gone.	He wouldn't have gone.	Would I have gone?