ThirdConditional To talk about actions or situations in the past that are contrary to known facts, i.e. when we imagine consequences of actions that in reality didn’t happen: If the Russians had used nuclear weapons in the Cold War, it wouldn’t have ended in 1990s. (The Russians didn’t use nuclear weapons in the Cold War)
We can also imagine consequences of something that did not happen, when in reality it did: If Fleming hadn’t discovered penicillin, a lot of people would have died from bacterial infection. (Fleming diddiscoverpenicillin)
Form. Grammarstructure If+pastperfect,would / wouldn’t+ have+pastparticiple. If Lucy hadstudied, Shewouldn’t failed Theexam have
Sayit! How would your life have been different if you´d been born 50 years ago? How would life have been different for your great grandparents with the invention of the Internet? Howwouldyouhavebeenifyou´dbeenbornlike a personfromtheopposit sex? Howwouldhavereactedifyouhadn´thadanybrothers and sisters?