间接引语中变直接引语时 last week 为什么不变换成the last week,而要用the week befor

英语直接引语改为间接引语last week改为 把直接引语变间接引语"did you see her last week?'he said. 直接间接引语中的last week对应什么 last week间接引语是什么啊 "Did you read the book last week?"he said 改为间接引语 直接引语变为间接引语时,句子状语也要发生变化,请问：so far 变为 by then.next week变为the n 直接引语变间接引语：He said,"I will come this week." 在直接引语改为间接引语中next week 应改为什么? 直接引语转换成间接引语at last变么? Did you see her last week ?he said改为间接引语 "did you see her last week?"paul said. 改为间接引语 “Dia you see her last week?”he said改间接引语