直接引语和间接引语时间状语的区别 不理解啊

Question

如：the day before yesterday前天------- two days before 前两天 the day after tomorrow后天---- two days later 两天以后 为什么怎么变，能否举例说明

Answer 1

意思是相同的，只是基准点不一样而已。如果说站在现在，两天之前就是two day ago，这是约定俗成的用法，在语法上规定下来，如果解释应该是two days before now；所以变成间接引语，将基准点放在过去，就是two days before then。英语是讲究效率和简单的语言，只要不引起混淆，多余的可以去掉，所以two days before then就变成了two days before。所以只抓住两点：1. 时间点基准点；2. 一些约定俗成的用法。two days later相当于two days later than then，用于过去，而从现在起的两天后则是in two days或者the day after tomorrow。the day before yesterday是站在现在去看，相当于two days ago。

Answer 2

引述别人的话时,一般采用两种方式：一是引用别人的原话,把它放在引号内,称为直接引语;二是用自己的话加以转述,被转述的话不放在引号内,称为间接引语.间接引语在大多数情况下是一个宾语从句.直接引语变成间接引语时,要注意以下几点：人称变化、时态变化、宾语从句要用陈述句语序等.
　　1.直接引语是陈述句,变成间接引语时,由连词that 引导.例如：
　　She said,“I am very happy to be with you.” →She said (that) she was very happy to be with me.
　　He said,“I will choose a book for my students.” →He said(that)he would choose a book for his students.
　　2.直接引语是一般疑问句时,变成间接引语,由连词whether或if 引导.例如：
　　He asked me,“Do you like watching TV?”→He asked me if/whether I liked watching TV.
　　He asked,“Are you sure your mother will come?”→He asked me whether / if I was sure my mother would come.
　　注意：大多数情况下,if和whether 在引导宾语从句时可以互换,但后紧跟or not时,一般只用whether.例如：
　　She asked me whether or not he could do the work./ She asked me whether he could do the work or not.
　　3.直接引语是特殊疑问句,变成间接引语时,由相应的连接词who,whom,what,whose,how,when,why,where 等引导.例如：
　　He asked:“Where are you to get off,John?” →He asked John where he was to get off.
　　My sister asked me,“How do you like the play?”→My sister asked me how I liked the play.
　　Tom asked me,“Who is the boy over there?”→Tom asked me,“Who was the boy over there?”
　　4.直接引语是祈使句,其间接引语由主语+动词ask(委婉语气),tell(一般语气),order (命令语气)或warn,advise等+复合宾语(名/代词+动词不定式)构成.如：
　　He said,“Please come here again tomorrow.”→He asked me to go there again the next day.
　　“Be careful with the dog.”→He warned me to be careful with the dog.
　　5.直接引语变间接引语时,如果引述动词为过去式,需注意时态的变化：如：
　　1) Betty said,“Lingling is singing in the classroom now.” 现在进行时→
　　Betty said Lingling was singing in the class room then.-过去进行时
　　2) He said,“I will go to London next week.” 一般将来时→
　　He said he would go to London next week.过去将来时
　　3) My mother said,“I have already cleaned the house.” 现在完成时→
　　My mother said she had already cleaned the house.过去完成时
　　注意:
　　1.直接引语是客观事实、普遍真理等,主句尽管是过去时态,变成间接引语时,时态仍然用一般现在时态.例如：
　　They told their son,“The earth goes round the sun.”→They told their son that the earth goes round the sun.
　　2.直接引语变间接引语时,指示代词、时间状语、地点状语、动词等要作相应的变化.如：this→that,these→those,now→then,today→that day,yesterday→the day before,last year→the year before,ago→before,here→there come→go等.例如：
　　He said,“I haven’t seen them today.” →He said that he hadn’t seen them that day.
　　但是,如果转述时对话人双方就在原来的地方,或在说话的当天,就不必改变相应的时间状语、地点状语等.总之,对这些变化不能机械理解,应根据实际情况来决定所作的变化.
　　3.间接引语一般要用陈述句的语序,即主、谓、宾的顺序.