新概念英語(yǔ)青少版4A Unit 7

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(fā)現(xiàn)了這個(gè)案子的一些新線(xiàn)索。.Words and Expressionsexpect 期待I expect her later. 我預(yù)計(jì)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(guān)Two men took the

5、parcel off the plane and carried it into the Customs House. 有兩個(gè)人把包裹拿下飛機(jī)，進(jìn)了海關(guān)。.Words and Expressionsbe full of 充滿(mǎn).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(gè)句子中發(fā)生在過(guò)去的兩個(gè)事情之間的時(shí)間關(guān)系。其中，正在進(jìn)行的狀態(tài)或動(dòng)作用過(guò)去進(jìn)行時(shí)，而插入的事件用一般過(guò)去時(shí)。句型1 I broke it while I was skiing. 用while 引出被打斷的動(dòng)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(fā)生在過(guò)去，并且在一段時(shí)間內(nèi)沒(méi)有被打斷的動(dòng)作。句型4 Who knocked over t

7、he vase? I knocked it over. 有些短語(yǔ)動(dòng)作中當(dāng)賓語(yǔ)作為名詞時(shí)，小品詞的位置可以改變。.Key Structures過(guò)去進(jìn)行時(shí)a 用過(guò)去進(jìn)行時(shí)表示一個(gè)持續(xù)的動(dòng)作，而用一般過(guò)去時(shí)表示一個(gè)突然發(fā)生的動(dòng)作。其中涉及時(shí)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(xù)的動(dòng)作被突然發(fā)生的動(dòng)作打斷了。注意，在以上例句中，時(shí)間狀語(yǔ)從句即可在句首，也可在句尾，而位于句首時(shí)，則

8、需要在后面加上逗號(hào)。.Key Structuresb while 可以用來(lái)表示兩個(gè)動(dòng)作同時(shí)進(jìn)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(guò)去進(jìn)行時(shí)可以用來(lái)表示在一定的時(shí)間內(nèi)（如all day, all night等）一直進(jìn)行沒(méi)有備打斷的動(dòng)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(guò)去進(jìn)行時(shí) was/were doing-用于簡(jiǎn)單句，如 . detectives were waiting all morning.-用于以when, while, as和ju