We forgot to buy a mouse for the new computer.
We DIDN'T REMEMBER TO BUY a mouse for the new computer.
I shouldn't have deleted those computer files.
I REGRET DELETING those computer files.
We wanted to fix the printer, but we didn't succed.
We TRIED TO FIX the printer.....
Jill hasn't used her phone since she got Skype.
Jill STOPPED USING her phone when she got Skype.