today-可以改为that day 
根据句意及上下文还可以改为:
yesterday /on Wednesday,etctomorrow------the next day /the following day /on Tuesday,……
直接引语变间接引语的方法:
⑴人称的转变:一般遵循“一主、二宾、三不变”的原则,即直接引语中的第一人称,一般要和主句中的主语保持一致直接引语中的第二人称,一般要和主语中的宾语(可根据语境假设)保持一致直接引语中的第三人称保持不变。
如: “You should be more careful next time,” my father told me. → My father told me that I should be more careful the next time.
⑵时态的转换:同宾语从句。
⑶其它的变化:
①时间状语的变化。now → then, tomorrow → the next/following day,today→ that day, next day→ the next / following week / month / year,yesterday → the day before ,two days ago → two days before,last week / month / year → the week / month / year before
②指示代词的变化。these→ those
③地点状语的变化。her→ there
④动词的变化。come→ go,bring→ take
⑸句子结构的变化:
①直接引语为陈述句。用连词that引导,that在口语中常省略。主句的谓语动词可直用接引语中的said, 也可用told来代替。句子结构同宾语从句。
②直接引语为一般疑问句,间接引语用连词whether或if引导,原主句中谓语动词said要改为asked(me/him/us等)。句子结构同宾语从句。
③直接引语为特殊疑问句,改成间接引语时,原来的疑问词作为间接引语的连词,主句的谓语动词用ask(sb.)来表达。句子结构同宾语从句。
④直接引语为选择疑问句,间接引语用whether…or…表达
如:He asked, “Do you speak English or French?”→ He asked me whether I spoke English or French.
⑤直接引语为祈使句时,改为间接引语,用带to的不定式表达,谓语动词常是ask, advise, tell, warn, order, request等。
如:ask sb. to do,(由肯定祈使句变成)ask sb. not to do(由否定祈使句转变)。
如:He said, “Be seated, please.” → he asked us to be seated