《十分新概念》开课啦！

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欢迎来到新东方在线-新概念课堂，我是小方。

我们希望每天10分钟的轻松课程，能帮助大家高效的掌握《新概念英语》的精华。

接下来的日子我们将会从口语和语法两个角度为大家展开！快点击音频开始今日的学习吧！

今天我们将会学到新概念二册的第7课

Lesson 7 Too late

The plane was late and detectives were waiting at the airport all morning. They were expecting a valuable parcel of diamonds 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!

—课文解析—

今天要学第7课。

本课讲的是警匪之间的钻石争夺战，课文篇幅虽不长，却通过警察的精心准备最后却扑得一场空反衬出盗贼技高一筹，最后戛然而止，引发读者的无限遐想。

New words and expressions 生词和短语

detective n. 侦探

airport n. 机场

expect v. 期待，等待

valuable adj. 贵重的

parcel n. 包裹

diamond n. 钻石

steal v. 偷

main adj. 主要的

airfield n. 飞机起落的场地

guard n. 警戒，守卫

precious adj. 珍贵的

stone n. 石子

sand n. 沙子

本课语法：过去进行时

1.定义：表示过去某时正在进行的情况和动作。

本课重点句：

The plane was late and detectives were waiting at the airport all morning.

飞机误点了，侦探们在机场等了整整一上午。

1.过去进行时构成：was/were + doing

2.过去某时正在发生的情况和动作。

I was practising the violin at eight o’clock yesterday evening.

昨晚八点的时候我正在练小提琴。

At that moment, I wasn’t doing anything.The plane was late and detectives were waiting at the airport all morning.

当时，我什么都没在做。飞机晚点了，而侦探们一整个上午都在机场等待。

3.过去进行时和一般过去时的区分

过去进行时表示过去某时正在进行的动作，而一般过去时表示一个已完成的动作或状态。

4.过去进行时常用结构：

当一件事持续进行的时候，另一件事突然出现将其打断。一般用过去进行时表示持续出现的事，用一般过去时表示突然出现的事。

While I was working on my letter, the telephone rang.

当我正在写信时，电话铃响了。

While two detectives were keeping guard at the door, two others opened the parcel.

当两个侦探守在门口时，另外两个侦探打开了包裹。

本课参考译文

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！