I always wondered why there is no "is" in this phrase. Why is it not "This page is intentionally left blank". I hoped this article would answer it, but no. It does show the is in [] to mark that's it's kinda missing. Anyone knows why there's no "is"? Does it ring wrong to you without "is"?
Because "left" works fine as the verb and doesn't require "is". To me, it flows better in speech with "is", but that's a subjective opinion and probably a culturally-influenced one; British people use that construction less than Americans like me, in my experience.
It would be more correct to add “was” since it happened in the past (the act of leaving it blank). Not necessary at all because “left blank” is already past tense.
does 'he eats faster than I [do]' seem wrong to you? it's a different problem ('than' as conjunction vs 'than' as preposition)[1] but to similar efect.
