新概念英语第二册09-01
发布时间：2012-12-26 编辑：查字典英语网小编
Lesson 7 Too late
一般过去时与现在完成时
共同点：动作在过去都做过了.
区别：过去式只强调过去的事，和现在没有任何关系.
I ate a piece of bread.
现在完成时，过去的事情对现在产生的影响.
I have eaten a piece of bread this morning. I'm not hungry.
The clock stopped. 陈述事实
The clock has stopped. 过去的事实对现在造成影响.
It snowed yesterday.
It has snowed yesterday. 强调对现在造成影响.
all morning = all the morning
The plane was late. 飞机晚(点)了.
The bus was late. / The train was late.
detectives 没有强调一些侦探或者那些侦探，强调侦探这种人;笼统概念，可不加some, the
... were waiting ... 故事背景，用进行时态
They were expecting ... 期待着心理上的等
They were waiting for ...
a valuable parcel of diamonds
a cup of tea 强调的是茶
South Africa 南非
a few hours earlier 几个小时以前
a few hours before / a few hours ago
someone had told ... 过去完成时，过去以前发生的事情
... that thieves would try to ...
would + do 过去将来式，间接方式，转述，站在过去看未来
that 从句，典型的宾语从句，起转述作用
steal sth.
one ... the other ... / some ... others ...
other = other + 名词复数
When the plane arrived, ... were waiting inside the main building while others were waiting on ...
when; while 当……的时候
while 能用when代替，但是when却不一定能用while代替
while + 从句，动作一定会延续
when + 延续性动作 / 瞬间动词 when he arrived
when he died
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