My favorite conditional of them all is finally here! Let’s break this down and give you exercises.
If + past perfect….would/wouldn’t have + past participle.
If I had seen him, I‘d have spoken to him.
We wouldn’t have passed our exams if we hadn’t studied.
If can go at the start of the sentence or in the middle. If it goes at the start, we must use a comma before the second half of the sentence.
We use the third conditional to talk about imaginary or impossible situations in the past and their consequences. The situations are impossible because we cannot change them now that they have happened.
If I had done my homework last night (imaginary past situation — it didn’t happen), the teacher wouldn’t have been angry with me. (the consequence)