The plural form for the words would be
Thief=Thieves
Knife=Knives
Wife=Wives
Calf=Calves
Half=Halves
Elf=Elves
Leaf=Leaves
Hi!
The statement that best explains this is:
The allusion highlights ideas that relate to the murder of King Hamlet.
We see that in the myth of the Trojan War, Pyrrhus eventually kills Priam (the King of Troy). Pyrrhus was elated to have done this deed, and that to with Priam's wife, Hecuba, beholding the sight. Priam had caused the war that had eventually resulted in he death of Pyrrhus's father, Achilles, and so by killing him, Pyrrhus was successful in avenging his father.
The reason Hamlet alludes as this particular story is to establish that his motive is similar to that of Pyrrhus's in that Hamlet seeks to avenge the death of his father by killing the King, Claudius, in the presence of his own mother, and Claudius's wife, Gertrude.
So just to be clear, the hints at the following roles:
Hamlet as Pyrrhus
Claudius as Priam
Gertrude as Hecuba
Irony: A way of being sarcastic or humorous.
Explain: The Gift of the Maji probably explains the definition of irony the best. It uses classic irony and sarcasm.
Details: Della cuts and sells her hair to buy Jim a watch, but Jim sells his watch to buy Della combs for her hair.
Have an amazing day my friend!
The main theme is the presence of a very powerful individualistic persona that is the narrator. It is supported by those lines because of the astounding individuality and solipsism seen where the person claims that he knows the best of time and space and was never measured and will never be measured. It is a celebration of individualism and the self.