"Through a singularly dreary tract of country, and at a length found myself, as the shades of the evening drew on, within view of the melancholy House of Usher." This shows the mood of a dark dreary house in which Rodrick Usher lives.
"Of the dark and tattered draperies, which, tortured into motion by the breath of a rising tempest, swayed fitfully to and fro the walls." This show the mood that the house is a very creepy and suspicious place as if someone is always watching you.
"There came, indistinctly, to my ears, what might have been, in its exact similarity of character the echo of the very cracking and ripping sound." This describes how the mood is becoming more mysterious as they figure this out.
"Without those doors there did stand the lofty and enshrouded figure of the lady madeline." THis mood is very scary because his dead sister is standing right in front of them.
"and the deep and dank tarn at my feet closed sullenly and silentlyover the fragmnets of the House of Usher," THe house has now fallen and it is comletely silent yet it is still creepy and mysterious and overall shoking.