I find this puzzling. I know that you usually use "seen" when a sentence contains "has" or "be". So, why do people always say "as seen on TV" and things like that? Thanks for your help!
Top answer
There is a word omitted in that clause. as [ is ] seen on TV.
— Mister Micawber
There is a word omitted in that clause.
as [ is ] seen on TV.
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