use of "death-symbols"

hi,

at school we are reading a streetcar named desire in our english lessons ( I'm German and my English isn't the best... - in fact it's a disaster, but I try to improve it).

Williams uses many symbols according to death, so for example the Elysian Fields or the Cemeteries in context of blanche's new living place at the Kowalski's. What's his intention by doing so? Does he try to foreshadow blanche's psychic ( or psychical?-I dunno how to say in English ...) death?

I would be really happy about getting some comments,

thanks in advice,

smiley