Metaphor
"Shall I compare thee to a summer's day?" "To be, or not to be? That is the question"
Probably either Sonnet 18 ("Shall I compare thee to as summer's day") or Sonnet 116 ("Let me not to the marriage of true minds admit impediments")
Shall I Compare Thee- Beauford Dainee
"Shall I compare thee to a summer's day?"
Although it is known as, "Shall I compare thee to a summer's day," this sonnet is also known by sonnet 18.
Metaphor
yes
Shall I Compare Thee to a Summer's Day? by William Shakespeare And it would appear to be about a man, not a woman.
It is a sonnet.
Shall I compare thee to a summer's day?
No, it is a sonnet, a poem of love.
Probably no. 18: "Shall I compare thee to a summer's day."