Conjugation & verb forms of the past conditional simple

(Formation of the conditional perfect mood in English)

Table of contents – past conditional simple

On this page you will find the following:

  1. Formation of the past conditional simple
  2. Verb forms of the past conditional simple
  3. Further explanations and exercises

Formation of the past conditional simple

The past conditional simple consists of three parts, which are the auxiliary verbswould’ + ‘have’ and the past participle of the corresponding main verb. Due to its use with ‘have’, it is also often called perfect conditional. In the majority of cases, it is utilised in the third conditional sentence (if-clause type 3).

  • Examples of forming the past conditional simple:
    • “I would have done it.”
      • This is a positive sentence that illustrates a situation that did not occur in the past.
    • “If Mike had revised more for the exam, he wouldn’t have failed it.”

Verb forms of the past conditional simple

Example verb: ‘to see

Positive/affirmative sentences

Person/pronoun Positive Short form Interrogative form Short form of question
I You would have seen. You’d have seen.
or
You would’ve seen.
Would you have seen?
you (singular)
he/she/it
we/you/they

Negative sentences

Person/pronoun Negative Short form Interrogative form Short form of question
I He would not have seen. He wouldn’t have seen.
or
He’d not have seen.*
Would he not have seen? Wouldn’t he have seen?
you (singular)
he/she/it
we/you/they

* This form is not as common as the other one.

Explanations relating to the ‘Formation of the past conditional simple’

The following additional explanations are related to the topic ‘Conjugation & verb forms of the past conditional simple’ and can also help you: