1、.Unit 7 Too Late.Listening and UnderstandingThe plane was late and detective 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.Listening and Under

2、standingWhen the plane arrived, some of the detectives were waiting inside the main building while others were waiting on the airfield.Listening and UnderstandingTwo men took the parcel off the plane, and carried it into the Customs House. While two detectives were keeping guard at the door, two oth

3、ers opened the parcel.Listening and UnderstandingTo their surprise, the previous parcel was full of stones and sand!.Words and Expressionsdetective 偵探The detective turned up some new clues to the case. 偵探發現了這個案子的一些新線索。.Words and Expressionsexpect 期待I expect her later. 我預計她遲到。.Words and Expressionsdi

4、amond 鉆石She wore a diamond heart around her neck. 她的脖子上掛著一顆鉆石雞心。.Words and ExpressionsThief 小偷The dogs were smelling round; perhaps they smelt the thief. 那些狗在到處嗅， 也許它們嗅到了小偷的氣味。.Words and Expressionsparcel 包裹She dashed the parcel aside. 她把包裹擲在一邊。.Words and ExpressionsCustoms House 海關Two men took the

5、parcel off the plane and carried it into the Customs House. 有兩個人把包裹拿下飛機，進了海關。.Words and Expressionsbe full of 充滿.Guided ConversationSome detectives.Yes, they were.Diamonds.From South Africa.Yes, they did.Yes, they were.On the airfield.Two men did.Into the Customs House.Two detectives were.Two other

6、detectives did.Pattern Practice一個句子中發生在過去的兩個事情之間的時間關系。其中，正在進行的狀態或動作用過去進行時，而插入的事件用一般過去時。句型1 I broke it while I was skiing. 用while 引出被打斷的動作。句型2 I was getting into the bath when it rang. 用when引出插入的事件。.Pattern Practice句型3 What were you doing all afternoon? 表示發生在過去，并且在一段時間內沒有被打斷的動作。句型4 Who knocked over t

7、he vase? I knocked it over. 有些短語動作中當賓語作為名詞時，小品詞的位置可以改變。.Key Structures過去進行時a 用過去進行時表示一個持續的動作，而用一般過去時表示一個突然發生的動作。其中涉及時間連詞when, while, as及just as的用法，例如：While I was watering the garden, it began to rain.I was having breakfast when the telephone rang.持續的動作被突然發生的動作打斷了。注意，在以上例句中，時間狀語從句即可在句首，也可在句尾，而位于句首時，則

8、需要在后面加上逗號。.Key Structuresb while 可以用來表示兩個動作同時進行，例如While George was reading, his wife was listening to the stereo.George was reading while his wife was listening to the stereo.c 過去進行時可以用來表示在一定的時間內（如all day, all night等）一直進行沒有備打斷的動作。如， Detectives were waiting at the airport all morning.Practicewas leav

9、ing arrived / found was sitting / was walking met / was reading heard/ was setting heard/ dropped spoke .ReadingNo, she didnt.At home.Because she was too busy to hear it.He tried to call her all morning.No, he wasnt.She was doing housework and looking after the baby.She sat down.The builder.The roof.tba.Grammar過去進行時 was/were doing-用于簡單句，如 . detectives were waiting all morning.-用于以when, while, as和ju