Grammar

Third Conditional

Use the third conditional to talk about imagined past situations that did not happen, and to express regret or criticism about the past.

Post

Level B2 Conditionals

Summary

Use the third conditional to talk about imagined past situations that did not happen, and to express regret or criticism about the past.

Structure

if + past perfect, ... would have + past participle

Examples

If I had studied harder, I would have passed the exam.
She would have come if you had invited her.
If they hadn't missed the train, they wouldn't have been late.
I would have helped if I had known.

Common mistakes

• Don't mix tenses: NOT 'If I would have known' → 'If I had known.'
• Use 'would have + past participle' in the main clause, not just 'would'.

Related

Second Conditional Past Perfect Mixed Conditional

More conditionals

First Conditional B1

Use the first conditional for real or likely situations in the future and their probable results.

Zero Conditional B1

Use the zero conditional for facts and things that are always true — when one thing happens, the result always follows.

Second Conditional B2

Use the second conditional for unreal, hypothetical, or unlikely situations in the present or future, and their imagined results.

Mixed Conditional C1

Use a mixed conditional when the time of the condition and the time of the result are different — for example, a past condition with a present result, or a present condition with a past result.

Wish / If Only (Present) B2

'Wish' and 'if only' with a past tense express a desire for a present situation to be different. The past form is unreal — it signals dissatisfaction with how things are now.

Wish / If Only (Past) B2

'Wish' and 'if only' with the past perfect express regret about the past — a desire that something earlier had been different. They look back at choices that can no longer be changed.

External links

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