Complex sentence: Wanting no regrets and offering her all of time and space, the Doctor implores Clara to join him again as the pair depart, unaware of a tangerine having been left on Clara's windowsill.
Split into simpler sentences: Wanting no regrets and offering her all of time and space, the Doctor implores Clara to join him again. As the pair depart, they are unaware of a tangerine having been left on Clara's windowsill.