The document discusses reported or indirect speech, which is used to describe what someone said in the past. It explains that in reported speech, pronouns, verbs, adverbs, and time/place expressions are changed compared to direct speech. Examples are provided showing how direct speech like "I am going now" would change to reported speech like "She said that she was going then." The different types of sentences that can be reported - statements, questions, and commands - are also described.