The past perfect uses 'had,' but why does, for example, this have to use the past perfect? "The world was run by idiots"-- This is simple past tense passive voice. Passive voice does not employ the past participle ('ran').
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Anonymous I know that run, ran, run trick with the simple present, simple past, and past perfect, but I'm having trouble determining what is past perfect and simple past.
The past perfect uses 'had,' but why does, for example, this have to use the past perfect?
"The world was run by idiots"
I'm trying to come up with cases where ran can by used prope