Question

What kind of figurative language is being used in thy eternal summer shall not fade and in the line nor shall death brag?

Answer 1

In the line thy eternal summer shall not fade Shakespeare uses metaphor to compare the beauty of his love to an eternal summer. And in the line nor shall death brag thou wanderest in his shade uses both personification and metaphor for he personifies death and uses "thou wanderest in his shade" as a metaphor of his love dying.