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.
The Mist Trail to Vernal Fall and Nevada Fall. in Yosemite National Park. On the path to Half Dome, Yosemiteâs most imposing bucket list hike, are two impressive waterfalls coursing down the Merced River. The Mist Trail provides the steepest most intimate experience of Vernal Fall and Nevada Fall.