Conditional Type 3

Used to express conditions in the past that did not happen. Often used to express criticism or regret with would have, could have or should have.

Uses the past perfect tense:

or...


Note! We never use would have, or wouldn't have etc in the if clause.

For Example:

• If I hadn't helped you, you would have failed. = You would have failed, if I hadn't helped you. (I helped you so you didn't fail).
• If it had been sunny, we could have gone out. = We could have gone out, if it had been. (We didn't go out because it wasn't sunny).