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3. The Third Conditional

The past perfect tense is used in the if clause, and the tense in the main clause is the prefect conditional.

 

EXAMPLE: If you had planned what to do, you would have done it successfully.

'If' Clause Main Clause
If + past perfect tense would/could/might + perfect infinitive (to have)
If you had planned what to do you would have done it successfully.

 

The main clause can come before the if-clause, as follow:

Would + perfect infinitive (to have) if + past perfect tense
You would have done it successfully if you had planned what to do

Would expresses a desired or predictable result.
could expresses a possible option.

 

We use Type 3 conditionals to:

 

  • express disappointment or regret about things that not possible to happen now.

EXAMPLE: If I had married her, I could have been a happier person.
EXAMPLE: If you had taken up teaching, you would have been better off.

  • talk about things that should have happened in the past, but didn't.

EXAMPLE: If you had requested information, the company would have provided it.
EXAMPLE: If I had completed my education, I would have been somebody else today.

  • imagine unrealistic situations

EXAMPLE: If I had worked harder, I would have become a professor.
EXAMPLE: If I had set up a business, I would have become very rich.

  • express criticism.

EXAMPLE: If he had got up earlier, he wouldn't have missed the bus.
EXAMPLE: If she had been patient, she would have got what she wanted.