Until the eighteenth century it was correct to say “you was” if you were referring to one person. It sounds odd today, but the logic is impeccable. Was is a singular verb and were a plural one. Why should you take a plural verb when the sense is clearly singular? The answer—surprise, surprise—is that Robert Lowth didn’t like it. “I’m hurrying, are I not?” is hopelessly ungrammatical, but “I’m hurrying, aren’t I?”—merely a contraction of the same words—is perfect English. Many is almost always a plural (as in “Many people were there”), but not when it is followed by a, as in “Many a man was
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