Lesson 7 Too late

·单词

detective n.    侦探

    ·detect v.    探测

airport n.    机场

    ·at the airport    在机场（指候机大厅）

    ·on the airfield    在机场（指飞机起降的场地，地面上）

expect v.    期待，等待（预期）

valuable adj.    贵重的（物质，金钱 方面的价值）

    ·value n.    价值

    ·precious adj.    珍贵的（精神方面的价值）

parcel n.    包裹

diamond n.    钻石

steal v.    偷

    ·steal    stole    stolen

main adj.    主要的

    ·the main building    主楼

    ·the main mirror    主镜（望远镜的主镜）

    ·main streets/side streets    主街/小街

    ·mian idea    主要内容

airfield n.    飞机起落的场地

guard n.    警戒（不指动作），守卫

    ·a sentry on guard    一个警戒的哨兵

    ·keep guard    警戒（指动作）

precious adj.    珍贵的

stone n.    石子

sand n.    沙子

·本课句型

过去进行时（常搭配when/while/as）

    ·形式：was/were doing

    ·用法：过去 正在进行的/持续进行的 事

        ·She was reading a book at 11:00 last night.

    ·否定疑问：

        ·She was not reding a book.

        ·Was she reading a book?

过去将来时

    ·形式：would do

                was/were going to do

    ·用法：过去的将来

        ·He said that he would travel abroad next year.    他过去说他明年将要出国旅行

        ·He was going to travel abroad next year.

    ·否定疑问：

        ·She was not reding a book.

        ·Was she reading a book?

陈述句变宾语从句（that引导）

    ·第一句：You are very handsome.（从句，taht引导）

    ·第二句：I think ... （我认为 一件事，这个是主句）

    ·结合：I think that you are very handsome.    我认为你很帅

    ·因为第二句是主谓宾，缺宾语，所以后面填上的陈述句来做从句叫宾语从句

·课文

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

at the airport    airport是元音开头，the可以念“di”（可粘贴到词典上进行发音学习）

a parcel of    一包 ... 东西

try to do sth.    努力，尽力做某事

tell sb. sth. 双宾语结构

Customs House    海关

·知识拓展

when/while/as 的区别

    ·while/as 通常只能用在进行时态，接延续性动词

    ·when 进行时和过去时都可以使用，没有限制

    ·I was having breakfast when the telephone rang.    只能使用when，因为rang是过去式

    ·When/While/As I was having breakfast, the telephone rang.    when/while/as 都可以使用，因为后面搭配的是过去进行时态。

不规则变化动词：

原型    过去式    过去分词    动词ing

·try    tried    tried    trying

·steal    stole    stolen

·take    took    taken    taking

·keep    kept    kept