The document discusses adjective or relative clauses, which provide information about a noun. It defines essential and nonessential clauses, noting that essential clauses are not separated by commas while nonessential clauses are. Examples are provided to illustrate the different types of clauses.

1. Advanced English M A Barbara Rodriguez

2. Adjective Clause Connectors/subject Adjective Clause Connectors/subject

3. Suggest definitions

5. A RELATIVE CLAUSE (ALSO CALLED ADJECTIVE CLAUSE) IS A SUBORDINATE CLAUSE THAT GIVES INFORMATION ABOUT A NOUN (SUBJECT OR OBJECT) IN THE MAIN CLAUSE.

8. THERE ARE TWO KINDS OF RELATIVE CLAUSES: ESSENTIAL (also called RESTRICTIVE, IDENTIFYING, NECESSARY) and NONESSENTIAL (also called NONRESTRICTIVE, NONIDENTIFYING, OR UNNECESSARY.

22. http://online.ohlone.cc.ca.us/~mlieu/adjclause/what_h.html