Final answer:
The use of antithesis helps the speaker achieve their purpose by creating a contrasting and impactful effect in their speech or writing. It is a rhetorical device that involves juxtaposing two opposite ideas or concepts to highlight their differences and create emphasis.
Step-by-step explanation:
The use of antithesis helps the speaker achieve their purpose by creating a contrasting and impactful effect in their speech or writing. Antithesis is a rhetorical device that involves juxtaposing two opposite ideas or concepts to highlight their differences and create emphasis. By using antithesis, the speaker can make their argument or point more persuasive and memorable to the audience.
For example, in Martin Luther King Jr.'s famous speech, he used antithesis when he said, 'I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character.' This antithesis between 'color of their skin' and 'content of their character' helps to emphasize his vision of equality and justice.
Overall, the use of antithesis in a speaker's communication can be a powerful rhetorical tool that helps them effectively convey their message and achieve their purpose.