答案是:Unrhymed iambic pentameter. See also Meter. In the 1540s Henry Howard, Earl of Surrey, seems to have originated it in English as the equivalent of Virgil's unrhymed dactylic hexameter. In Gorboduc (1561), Thomas Sackville and Thomas Norton introduced blank verse into the drama, whence it soared with Marlowe and Shakespeare in the 1590s. Milton forged it anew for the epic in Paradise Lost (1667).
