REPORTED SPEECH is used when we want to tell somebody what someone said. It is introduced with reporting verbs (used in the past tense) told, said, complained, explained, pointed out, protested, objectedetc. That is optional in the reported sentence: "I am buying my newspaper." He said (that) he was buying his newspaper. "I have washed my hair" She told me (that) she had washed her hair.
There is NO CHANGE in verb tenses in Reported speech when (1) the reporting verb (told, said, explained etc.) is in the Present Perfect, Present or Future tense (2) the sentence expresses permanent states or a general truth and conditions (3) the reported sentence contains a time clause: (1) "I can play football well." He says/has said/will say (that) he can play football well. (2) "It gets dark very early in winter." My brother told me (that) it gets dark very early in winter. (3) "Ann came round to my house while I was doing my shopping." He explained (that) Ann came round to his house while he was doing his shopping.
1) she hadn't eaten 2) and he would never 3) (that) they had already finished their 4) she couldn't meet me because she was 5) there was going to be 6) he is living 7) he had been in Dublin for a year but I hadn't had 8) he would be sitting 9) he met Sarah while he was working 10) the earth revolves