See our relative pronoun page for a list of relative pronouns. A subordinate clause is a sentence fragment . Subordinate clauses should not be used as complete sentences. Subordinate clauses should be joined with complete sentences. The girl who ate all the cake.
Questions beginning with a subordinating conjunction or a relative pronoun are complete sentences.
At the circus in town this week. Bongles' claims to equestrian fame are many. Juggling, acrobatics, lion-taming, and manning the cotton candy stand. But the most impressive of Bongles' many talents is his world-renowned high wire act. Bongles is one of the only ponies in the country.