Imagery would be "The seas were blue while the beautiful skies were as light as my eyes."
Figurative is "The tears from the young girl were swept by the sea."
And... that's all i have.
Explanation:
The lines quoted in question are taken from "Importance of Being Earnest"
The essence is that the writer is criticizing the action of people especially women for their behavior in public. He has done that in metaphorical way and quoting the practice of women doing flirt with husbands on public places during Victorian Era. He said that just like there is no need of washing a white cloth similarly women don’t need to flirt with those , whom they already love
Most likely it will be found under textbook :)
