<P> While many passages in Shakespeare's plays are written in prose, he almost always wrote a large proportion of his plays and poems in iambic pentameter . In some of his early works (like Romeo and Juliet), he even added punctuation at the end of these iambic pentameter lines to make the rhythm even stronger . He and many dramatists of this period used the form of blank verse extensively in character dialogue, thus heightening poetic effects . </P> <P> To end many scenes in his plays he used a rhyming couplet to give a sense of conclusion, or completion . A typical example is provided in Macbeth: as Macbeth leaves the stage to murder Duncan (to the sound of a chiming clock), he says, </P> <Table> <Tr> <Td> "</Td> <Td> Hear it not Duncan; for it is a knell <P> That summons thee to heaven or to hell . </P> </Td> <Td>" </Td> </Tr> </Table> <Tr> <Td> "</Td> <Td> Hear it not Duncan; for it is a knell <P> That summons thee to heaven or to hell . </P> </Td> <Td>" </Td> </Tr>

Which of these plays was not written by shakespeare