Third conditional
Imagine a different past and talk about regrets: If I had left earlier, I wouldn’t have missed the train.
In this lesson you will
- Form the third conditional
- Talk about imaginary past situations and regrets
- Recognise contractions ’d = had / would
Learn
Form: If + past perfect, would have + past participle: If I had studied, I would have passed.
Use it for the past that didn’t happen — imagining a different result: If we’d left earlier, we wouldn’t have missed the flight (we left late and missed it).
Contractions: ’d can mean had (in the if-clause) or would (in the result): If I’d known, I’d have told you.
Use could have / might have for possibility: If you’d asked, I could have helped.
Examples
- If I hadn’t taken that job, I wouldn’t have met my wife.
- If it hadn’t rained, the match would have gone ahead.
- She might have won if she hadn’t been injured.
- What would you have done if you’d been there?
Vocabulary
regret
feel sorry about something you did or didn’t do
injured
hurt
go ahead
happen as planned
in hindsight
looking back now
missed opportunity
a chance you didn’t take
Practice
Complete the sentence.
Speaking
Talk about three decisions in your life and imagine different outcomes: If I hadn’t…, I would(n’t) have…
Writing
Write about a small mistake and how things would have been different (80–100 words).
Lesson quiz
If I had seen the sign, I ___ there.
Review
Key points
- If + past perfect, would have + participle.
- Imaginary past, regrets.
- ’d = had (if-clause) / would (result).
- could/might have for possibility.
What you learned
- ✓ I can use the third conditional.
- ✓ I can talk about regrets.
- ✓ I understand ’d contractions.
Grammar reference: Conditionals: zero, first, second and third