The footpath was an unused option because the sentence says we chose the road. The page behind the drawer is only a possible explanation. Could have fits both; the surrounding words establish whether the event did not happen or remains uncertain.

The idea

Form could have + past participle: could have taken/lent/slipped. Negate with couldn't have and ask Could you have ...?. An unrealised possibility can describe an opportunity or a danger avoided; an uncertain deduction leaves the actual event open.

Examples

  • We could have taken the footpath, but we chose the road.
  • I could have lent you a tripod, but you didn't ask.
  • The missing page could have slipped behind the drawer.
  • She couldn't have carried all six boxes alone; they were too heavy.
  • That falling branch could have damaged the roof, but it missed.
  • Could you have finished without the extra hour?

Read-aloud uses a synthetic English voice on your device. Quality and availability vary; it does not assess pronunciation.

Watch out

Do not automatically read every could have as a missed chance. Equally, it does not prove an event occurred. Couldn't have may express inability in imagined circumstances or confident rejection of an explanation. Write could have, never could of.

Try it yourself

  1. Choose the past participle. We could have ___ the footpath. (taken / took)

    Show answer or example answer

    taken

    After have, use the past participle taken, not the past-simple form took.

  2. Read We could have taken the footpath, but we chose the road. Which did we choose? the road / the footpath

    Show answer or example answer

    the road

    We chose the road. The clause after but explicitly rules out taking the footpath on this occasion.

  3. Read The missing page could have slipped behind the drawer. Is that explanation confirmed? not confirmed / definitely confirmed

    Show answer or example answer

    not confirmed

    The explanation is not confirmed. Could have slipped presents a possibility; checking behind the drawer would provide evidence.

Use it today

Describe an alternative you did not choose and state what you actually did. Give a possible explanation for a missing object without claiming certainty. Finally, describe a bad outcome that was possible but did not occur.