Third conditional
Use the third conditional to imagine a different result for a past situation that cannot now be changed.
Learning goal: Third conditional
Combine if plus past perfect with would have plus a past participle.
In a nutshell
Use the third conditional to imagine a different result for a past situation that cannot now be changed.
When do we use it?
Combine if plus past perfect with would have plus a past participle.
Pattern
Form
Use if + had + past participle, would have + past participle.
- If I had known, I would have called.
- She would have passed if she had studied.
Examples
Key contrast
At B2, choose the form from the complete context: sequence, viewpoint, degree of certainty and clause structure all matter.
Watch out
Common mistakes
If I would have known.→ If I had known.I would have call.→ I would have called.
Key takeaway
Remember
Use the third conditional to imagine a different result for a past situation that cannot now be changed.
Self-check
Quick check
- Identify the time relationship or intended meaning.
- Check the auxiliary, participle and clause pattern.
- Eliminate answers that fit the words but not the context.
Put it into practice
Ready to test Third conditional?
A short interactive practice session with instant feedback — about 10 questions calibrated to B2 First.
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