新概念2第7课ppt

★guard n. 警戒, 守卫 life guard 救生员 body guard 保镖 keep guard 守望，警戒 They kept a close guard over the thieves. stand guard 站岗，放哨 at the door 在门边(固定搭配) two others=two other detectives
【Key structures】
过去进行时:过去进行时表示过去正在
进行的动作或情况; 过去进行时的构成： was/were+doing
过去进行时和一般过去时经常同在一
个句子里使用,一般过去时则表示比较 短暂的动作或事件; 正在进行中的动作或情况往往由连词 when，while，as，just as等引导。
one…the
other… 一个……另一
个…… some…others… 一些……另一 些…… Some students are very hardworking, others are not. others=other+名词复数
★main
adj. 主要的 main building； main street； main sentence； main idea main不能与人连用
when，while
当……时候(强调动
作同时发生) while+从句, 动词一定是延续性动词 when+延续性动词/瞬间动词 while能用when代替，但是when却 不一定能用while代替。while通常 只引导持续时间较长的动作，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。

★valuable adj. 贵重的 ★precious adj. 珍贵的 value n.&v. 价值；valuable adj.有 价值的 sth.is valuable=sth.is precious precious adj. 珍贵的precious photo -less 表否定; priceless adj. 没有价格的, 无价的 valueless adj. 没有价值, 不足道的
过去动作同时发生的时态 ① 过去两个动作同时发生, 动作长用过去 进行时, 动作短用一般过去时; 分工的情况, 动作的开始时间和结束时间几乎相同, 均用 过去进行时; I was listening to the radio, my sister was dancing. When my mother was doing the housework, my father was watching TV.
②
vt. 巧妙地占用，偷偷地弄到
手 He has stolen away Mary’s heart. 他已赢得玛丽的芳心。 ③ vi. 偷偷地行动，悄悄靠近 He stole into the room. 他悄 悄地进了房间。
3、When
the plane arrived, some of the detectives were waiting others were waiting on the airfield. 代词others常常和some连用，表 示“有些(人)……，也有些 (人)……”或“有的……，其余 的……”
1. Sentence Structures
The
plane was late and detectives were waiting at the airport all morning. They were expecting a valuable parcel of diamond from South Africa.
★guard
n. 警戒, 守卫 life guard 救生员 body guard 保镖 keep guard 守望，警戒 They kept a close guard over the thieves. stand guard 站岗，放哨
6、While two detectives were keeping guard at the door, two others opened the parcel. 当两个动作同时发生延续时间却不同时, 长时间的动作用进行时态, 短时间的动 作用过去时. When someone knocked at the door, I was having dinner.
John
was watching TV while his wife was talking with a neighbour over the phone. Just as I was leaving the house, you came in. when也可引导较短暂的动作， while和as一般不行。 We were having supper when the lights went out.
② vt. 等待，期待，盼望(心理上的等 待) They are expecting guests tonight. expect所表示的等待一般暗含着根据 某些信息或规律而作出相应反应的意 思，而wait for主要接续“等待”这个 动作本身。 expect sth. I expect a letter from Jimmy.
They
were expecting a valuable parcel of diamond from South Africa. ★expect v. 期待, 等待 ① vt.&vi. 预计，预料 Jim has failed in mathematics as his teacher expected.
构成副词短语，如：all day，all night，all week，all winter，all year等。但不说all hour。 whole在表达同样的意思时一般要 加冠词或数词，如a whole day/year，two whole weeks。 all morning=all the morning
2. Notes

1、The plane was late and detectives were waiting at the airport all morning.
没有强调一些侦探或者 那些侦探, 强调侦探这种人，笼统 感念, 可不加some, the ★detective n. 侦探detective story 侦探小 说
5、Two
men took the parcel off the plane and carried it into the Customs House. take sth. off…=take sth. away from… and carried it into… carried 表 示看得很重 Customs House 海关

To
their surprise, the precious parcel was full of stones and sand! to one's surprise,让某人惊讶的 是 To one’s +表情绪名词 to one's joy/to one's excitement be full of ...装满 My bag was full of books.
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.
detectives
★airport
n. 机场 port 港口； at the airport 在机场 field 田野； ★airfield n. 飞机起落的场地 airfield 停机坪 on the airfield在停机坪上
all一般直接加表示时间的单数名词

★diamond
n. 钻石 diamond ring precious stone 宝石； crystal 水晶； jade 玉
2、A
few hours earlier, someone had told the police that thieves would try to steal the diamonds. a few hours earlier 几个小时以前 = a few hours before/a few hours ago would +do 过去将来时,间接方式, 转述, 站在过去看未来
过去进行时往往与表示一段时间的
状语连用，如all morning，all night，all day，all evening， the whole week等，表示这段时 间一直在干什么。 What were you doing all evening? I couldn’t find you anywhere.
★steal(stole，stolen)
①
v. 偷
vt.&vi. 偷盗，行窃 英语中“偷”用steal和rob来表达， 宾语是物，用steal；宾语是人， 用rob；跟地点相连，也用rob steal sth. 偷(某物) My wallet was stolen. rob sb. 抢(某人) rob the bank
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!

②
两个动作在同时段进行, 在不同 时间结束, 先发生的动作未结束, 另 一个动作发生, 先发生的动作用进 行时态, 另一个动作用过去时. When I was opening the door, the telephone rang.先开门 When the telephone was ringing, I opened the door.电话 先响

expect sb.to do sth. 期待某人做某 事 I expect you to write back. wait for sth./sb. 动作上的等待 I’m waiting for my mother. ③ vt. 认为，猜想(一般用于口语) I expect so.=I think so. I expect you’ve heard the news.
Motto
If you never try something new, your life's story will be boring.
Lesson 7
Too late
郑州恩特英语 Defoe
Listen to the tape
listen
to the tape write down what you heard as much as possible: