Subordinating Conjunctions
Subordinating Conjunction A subordinating conjunction joins a subordinate clause to a main clause. The following is a list of the most common subordinating conjunctions. after how till ( or ’til) although if unless as inasmuch until as if in order that when as long as lest whenever as much as now that where as soon as provided (that) wherever as though since while because so that before than even if that even though though From <http://englishplus.com/grammar/00000377.htm>