The Third Conditional - Perfect English Grammar
www.perfect-english-grammar.com › thirdThe Third Conditional We make the third conditional by using the past perfect after 'if' and then 'would have' and the past participle in the second part of the sentence: if + past perfect, ...would + have + past participle It talks about the past. It's used to describe a situation that didn't happen, and to imagine the result of this situation.