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Grammar

Third and mixed conditionals

Talking about unreal situations in the past, and how they connect to the present.

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All three patterns talk about something that did not happen or is not true. The difference is when the condition and the result belong: both in the past, or one in the past and one in the present.

Pattern
If part
Main part
Third conditional
if + past perfect
would have + past participle
Mixed: past → present
if + past perfect
would + base verb
Mixed: present → past
if + past simple
would have + past participle

The third conditional

An unreal past condition with an unreal past result.

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

  • If we had hired more staff, we would have finished the project on time.
  • He wouldn't have burned out if he had taken regular breaks.
    Both the condition and the result belong to the past: neither happened.

Mixed conditional: a past condition, a present result

An unreal past condition with a result in the present.

If + past perfect, ... would + base verb

  • If I had taken that job, I would be earning more money now.
  • She would be so much more confident today if her first presentation hadn't gone badly.
    The condition is in the past, but its effect is felt right now.

Mixed conditional: a present state, a past result

A present or permanent state with an unreal past result.

If + past simple, ... would have + past participle

  • If she weren't so shy, she would have spoken up at the meeting.
  • If he weren't so disorganised, he wouldn't have missed that deadline.
    The condition describes what someone is generally like, not a one-time past event.

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Where this rule sits

All C1 rulesConditionals and unreal situations: all rules