fromEnglish Grammar Today
We useopenas an adjective to mean ‘not closed’:
I stopped the car when I realised that the door wasopen.
Not: …that the door was opened.
Openedis the past form of the verbopen:
Can youopenthe window, please?(present)
Sheopenedher eyes and immediately looked at the clock.(past)
Warning:
We don’t useopento refer to turning on taps and switches:
Pleaseturn onthe taps separately.
Not:Please open the taps…
Can youswitch onthe lights, please?
Not:Can you open the lights…