 Studying Macbeth, here's how you can analyse the exchange between Macbeth and Lady Macbeth in Act 1, Scene 7. Macbeth changes his mind about killing the king because he hath honoured me of late. What he's saying here is that he has been given a promotion. The litteration that's used here shows that he is feeling guilty about killing King Duncan. Lady Macbeth is furious and she asks this rhetorical question and what this does is it mocks his lack of ambition. She's saying he basically can't match up in action what he wants in his heart. She then tells Macbeth when he does do it then you're a man. In other words, he will only be a man in her eyes if he kills King Duncan. The Caesarean litteration here shows she's manipulating Macbeth by questioning his masculinity. Macbeth agrees to kill the king however this question shows his fear and the power that his wife has in changing his mind. Unlike Macbeth, Lady Macbeth is bold and this exclamatory sentence shows she is sure of this plot. This contextually led many people to see her as the fourth witch.