people in valley town said they hope the police would catch

一般来说，当上级句子时态为一般现在时，现在完成时或将来时时，时态不变。 He says he is tired. He has told me he is tired. He will tell you he is tired. 表述客观真理时，时态也不改变，用一般现在时。如： He said water freezes at thirty-two degrees Fahrenheit. Our teacher told us that the earth turns around the sun. 其它情况下上级句子为一般过去式时，时态就会改变。 He said he was tired. 希望我能帮助你解疑释惑。