According to the dictionary, reported speech is a speaker's words reported in subordinate clauses governed by a reporting verb, with the required changes of person and tense (e.g. <em>he</em><em> </em><em>said</em><em> </em><em>he</em><em> </em><em>would</em><em> </em><em>go</em><em>,</em><em> </em>based on <em>I</em><em> </em><em>will</em><em> </em><em>go</em> ).