高一新概念英语短文,每天一篇新概念英语短文day7

Day7 Too late
　　课文内容：
　　The plane was late and detectives were waiting at the airport all morning. They were expecting a valuable parcel of diamond from South Africa. A few hours earlier, someone had told the police that thieves would try to steal the diamonds. When the plane arrived, some of the detectives were waiting inside the main building while others were waiting on the airfield. Two men took the parcel off the plane and carried it into the Customs House. While two detectives were keeping guard at the door, two others opened the parcel. To their surprise, the precious parcel was full of stones and sand!
　　本文语法：一般过去时和过去进行时的区别
　　语法归纳：1)一般过去时：仅描述在过去某一时间发生的某一动作。
　　2)过去进行时：描述在过去的某一时间段内正在发生的事情。
　　3)一般过去时和过去进行时在时间状语行句中的应用：
　　1、动作可延续，用过去进行时;动作为瞬间性的，用一般过去时。
　　2、动作延续时间长，用过去进行时;动作延续时间短，用一般过去时。
　　3、都是瞬间性动作，均用一般过去时。
　　4、表述多次重复或习惯性的动作时多用一般过去时。
　　参考译文
　　飞机误点了，侦探们在机场等了整整一上午。他们正期待从南非来的一个装着钻石的贵重包裹。数小时以前，有人向警方报告，说有人企图偷走这些钻石。当飞机到达时，一些侦探等候在主楼内，另一些侦探则守候在停机坪上。有两个人把包裹拿下飞机，进了海关。这时两个侦探把住门口，另外两个侦探打开了包裹。令他们吃惊的是，那珍贵的包裹里面装的全是石头和沙子!

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