Imagine that you have decided to write an analysis about king’s use of metaphor and repetition as rhetorical techniques. which topic sentence best introduces the analysis? the strongest two techniques king uses in his “i have a dream” speech are repetition and metaphor. in his “i have a dream” speech, king uses both metaphor and repetition as rhetorical techniques to convince his audience to work toward a future of equality. king is determined to do whatever it takes to achieve equality, so he delivers a powerful speech using repetition and rhetorical techniques. metaphor and repetition are two rhetorical techniques that king uses in his famous “i have a dream” speech.