Find each independent clause, each dependent clause. Identify the sentence as simple, compound, complex, or compound-complex. DO ALL SENTENCES!

1.Its proprietor, Roderick Usher, had been one of my boon companions in boyhood; but many years had elapsed since our last meeting.

2.I feel that the period will sooner or later arrive when I must abandon life and reason together.

3.If ever a mortal painted an idea, that mortal was Roderick Usher.

4.Having carefully shaded his lamp, he hurried to one of the casements and threw it freely open to the storm.