This document discusses noun clauses introduced by wh- words like who, what, where, how. It provides examples of wh- noun clauses functioning as subjects, objects, subject complements, adjective complements, and objects of prepositions. It notes that wh- clauses do not follow the word order of wh- questions, and instead follow the pattern of wh- word + subject + verb. The document also contains a section correcting common errors in using wh- clauses.