新概念英语一册lesson 7（新概念英语第二册）
新概念英语一册lesson 7（新概念英语第二册）on the airfieldat the airportHe’s so young that he can’t understand the ways of the world.神探狄仁杰夏洛克
Never too old to learn.
It is never too late to mend.
He's too young to understand the ways of the world.
表达否定意义时，可以和so… that… 替换。
He’s so young that he can’t understand the ways of the world.
detective [dɪˈtektɪv] n.
神探狄仁杰
夏洛克
airport [ˈeəpɔːt] n. 机场// airfield [ˈeəfiːld] n. 停机坪at the airport
on the airfield
苏南硕放国际机场
Sunan Shuofang International Airport
expect [ɪkˈspekt] v. 期待 等待① vt.&vi. 预计，预料
Jim has failed in mathematics as his teacher expected.
② vt. 等待，期待，盼望（心理上的等待）
expect sth.
They are expecting guests tonight.
expect sb. to do sth.
I expect my uncle to write back.
③ vt. 认为，猜想（一般用于口语）
I expect you’ve heard the news.
diamond [ˈdaɪəmənd] n.
① vt.&vi. 偷盗，行窃
My wallet was stolen.
He was caught in the act of stealing a car.
② vt. 巧妙地占用，偷偷地弄到手
He has stolen away Mary’s heart.
③ vi. 偷偷地行动，悄悄靠近
to move secretly and quietly so that other people do not notice you
He stole into the room.
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!
时态：过去进行时(1) 过去进行时的构成：was/were doing
(2) 过去进行时的用法：
a. 用来描述过去特定时刻正在发生的事情
I was discussing my thesis with my director at this time last night.
b. 过去进行时常和一般现在时配合使用。此时，过去进行时通常表示一个历史较长的体现“背景”的动作或者状态，而一般过去时则表示此状态下发生的、短暂的动作或状态。过去进行时动作先发生，一般过去时动作后发生。
正在进行中的动作或情况往往由连词 when while as等引导。
(3) 过去进行时: when while&as
A. when 短暂性动作/延续性动作
B. while 从句 一般是延续性动作，并且主句和从句可以同时用过去进行时，而 when和as一般不这么用。
while能用when代替，但是when却不一定能用while代替。
C. while通常只引导持续时间较长的动作，as 延续性动作，但延续时间没有while长。
When/ While/ As we were having supper the lights went out.
John was watching TV while his wife was cooking.
I was having dinner when the telephone rang.
The postman arrived just as I was leaving.
