单词
detective n. 侦探
- detect v. 探测
valuable adj. 贵重的
- value n. 价值
- precious adj. 珍贵的
main adj. 主要的
- the main building
- the main streets / the side streets
- the main mirror
- the main idea
guard n. 警戒，守卫
- keep guard
语法
过去完成时(过去的之前)
站在过去的角度回头看待之前发生的事情。
Before(之前) 8:00 yesterday(过去), she had finished(finish) her homework。昨天八点之前，她就完成了她的家庭作业。
when / while
The plane was(一般过去时) late and detectives were waiting … all morning.
The plane was late and detectives were waiting … all morning.
They were expecting(过去进行时) a valuable parcel … from South Africa.
过去进行时
形式： was/were doing
用法：She was reading a book at 11:00 last night.
否定疑问：
She was not reading a book …
Was she reading a book …?
过去进行时
补充：
While you were sleeping, a thief sneaked in.
A few hours earlier, someone had told the police that thieves would try to steal the
diamonds.
try to do sth.
try doing sth.
A few hours earlier, someone had told the police that thieves would try to steal the
diamonds.
过去完成时
形式：had done
用法：
Before 8:00 yesterday, she had finished(finish) her homework.
When he got there, she had left(leave). She was not there.
否定疑问：
She had not finished her homework.
Had she finish her homework?
过去完成时
补充： 过去完成时 ／ 现在完成时
- It is 10:00. I** is waiting** (wait) for 2 hours.
- It was 10:00. I was waited (wait) for 2 hours.
The plane was late …
A few hours earlier, someone had told the police …
A few hours earlier, someone had told the police that thieves would try to steal the
diamonds.
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 go abroad next year.
A few hours earlier, someone had told the police that thieves would try to steal the
diamonds.
tell sb. sth
双宾语结构
… that thieves would try to steal the diamonds
宾语从句
写法：
陈述句变宾语从句？
You are right.
I think that You are right.
When the plane arrived, some of the detectives were waiting inside … while others were waiting on the airfield.
While you were sleeping, a thief sneaked in. = You were sleeping, when a thief snaeked in.
Two men took the parcel off the plane … carried it into the Customs House.
take off
- Two men took the parcel of the plane…
- He took off his coat.
- The plane will take off.
While two detectives were keeping guard … two others opened the parcel.
To their surprise, the precious parcel was full of stones and sand!
四种表示过去的时态：
- The plane was late and detectives were waiting … all morning.
- A few hours earlier, someone had told the police that thieves would try to steal the diamonds.