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It is only 4 hours by train

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Tony: Hi,Jack.You were not at school last week.Where were you? Jack:I was back to my hometown .I was born there. Tony:Really?Where is your hometown? Jack;New York.Ilived there before I was ten. Tony:Was it far from here? Jack: No,it takes only 4 hours by train. 前一句Tony：Was it far from here ?用 过去时态，为什么不用现在时态？而 后一句It takes only 4 hours by train.句中用的却是现在时态。
It is only 4 hours by train
解题思路： 语境分析。 问过去 和 经验常规不变的 。
解题过程：
Was表示他问路程的过去，takes则是时间上固定不变的定位 第一句 询问事实，问 以前 要花费多长时间
第二句是句型 It takes sb sometime to do sth 表示通常 一般的情况 根据自己的经验来回答
前一句的时态是与全篇对话的语态一致的，所以是一般过去时态，而后一句是指经常发生的事，无论什么时候坐火车只要花费四个小时路程，这个常规经验性的。所以它用了个现在时。
最终答案：略
It's four hours by train How far is it from beijing?回答：It's.hours by train. GOING TO GUANGZHOU BY TRAIN FROM WUHAN TAKES ONLY 4 HOURS.的同 It is well known that it takes travelers only 48 hours by tr It ( ) twelve hours to go to Guangdong by train It ____two hours by train from Guangzhou to Changsha?Aspends It is only by practising English for several hours every day Beijing is a ___of twenty hours by train from here. It takes ( )hours to go to Wenzhou by train than by bus it takes hours TO t ravel BY train than by air it only takes me two hours to tianjin f___ beijing byi train it took him five hours to get to nanjing by train同义句