what is a clause
A clause is a group of related words containing a subject and a verb A clause can be usefully distinguished from a phrase, which is a group of related words that does not contain a subject-verb relationship, such as in the morning or running down the street or having grown used to this harassment..
A clause is a group of words that has both a subject and a predicate. Every complete sentence is made up of at least one clause. A dependent clause usually begins with a subordinating conjunction, a relative pronoun, or some other word that causes it to become dependent.