May I know whether open or opened I should use in this sentence? These cases are opened? or These cases are open?
I want to use in, Once these cases _____, then it will be moved to "Opened Tab". Or I should use, Once these cases have been opened ?
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Both sentences are grammatical. They mean different things. "These cases are open" is an adjective construction that describes these cases. "These cases are opened" is a passive construction that declares an event of opening these cases to take place. For instance, if a judge could open cases by deeming them to be open, he could say "These cases are opened" (and bring his gavel down) to accomplish the opening of the cases.