A complex sentence is a sentence consisting of an independent clause and a subordinating clause. Or, to put it more simply, complex sentences involve more than just a straightforward noun + verb. Complex sentences include extra phrases added to a base sentence, but which cannot stand alone as a sentence. For example:
Published 4:00 am, Thursday, January 9, 1997. 1997-01-09 04:00:00 PDT Yosemite National Park -- Yosemite Valley is slowly drying out after what park rangers are calling the worst flood here in recorded history, leaving behind hundreds of upturned tent-cabins and acres of wrecked camping sites.
Photo by David Paul Morris. Credit: Getty Images. The white 'bathtub ring' on the rocks around Lake Mead is from mineral deposits left by higher levels of water. Photo by Ethan Miller. Credit: Getty Images. Water reserves are drying up in the Lexington Reservoir located near Los Gatos, California.The reservoir supplies water to Silicon Valley residents.ake Oroville, the main reservoir for the Calif. water project system, is 25 percent below average and at 64 percent of capacity.