Conjunctions:Subordinating Conjunctions- A sub-ordinate Conjunction joins a sub-ordinate clause (dependent clause) to the principal clause (main clause/independent clause). Sub-ordinating conjunctions are used to form Complex sentences.In a complex sentence there are at least two clauses known as Principal clause and Sub-ordinating clause.There are three types of sub-ordinating clauses:Noun clauseAdjective clauseAdverb clauseThe most common subordinating conjunctions are:after, although, as, because, before, if, since, that, though (though........