The Song of Songs Go Back Learn about phrase and clause views 5:29 Now learn about phrase and clause. Let’s see these sentences:. a) He wore a shirt made of cotton b) He wore a shirt which was made of cotton. a) Are you sure of your innocence? b) Are you sure that you are innocent? Children, you will notice that all underlined groups of words in the sentences marked (a) merely refer to a concept or expression. They do not contain a subject or a main or principal verb. Such a group of words or unit of a sentence is called a PHRASE Introduction Question answer session Tell me who said Learn about phrase and clause