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  In reported speech the past perfect may represent any of three tenses in   direct speech, according to the context:   1 "I've lost my wallet." (past perfect)     = he said he had lost his wallet.   2 "I lost my wallet yesterday." (past simple)     = He said he had lost his wallet the previous day.   3 "When I got home, I found I had lost my wallet"     = He said that when he got home, he found he had lost his wallet.   Note that in sentence 3 it is not necessary to change the past simple got and   found, and it is impossible to change the past perfect had lost - we have   reached the limits of the verb tense system. The relationship between the   tenses is clear from the context, and we are hardly likely to misinterpret the   report as representing:       "When I get home I find I have lost my wallet." |