Adverb clause of time - English Grammar
www.englishgrammar.org › adverb-clause-timeJun 25, 2013 · An adverb clause of time shows when something happens. It is usually introduced by time adverbs. Examples are: before, after, as, when, while, until, as soon as, since, no sooner than, as long as etc. Note that all adverb clauses are subordinate clauses. They cannot stand on their own and must be attached to an independent clause.