Thestrangeecho奇怪的回声课件.ppt
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1、Lesson 13 The Strange Echo1The-strange-echo-奇怪的回声目录Warming up Words&PhrasesExercises 2The-strange-echo-奇怪的回声Do you know what Is echo?3The-strange-echo-奇怪的回声Chinese Definition of Echo 1701年,普鲁士国王腓特烈一世想拥有一件珍品年,普鲁士国王腓特烈一世想拥有一件珍品 一个壁上嵌满琥珀的房间一个壁上嵌满琥珀的房间当声投射到距离声源有一段距离的大面积上时,声能的一部分被吸收,而另一部分声能要反射回来,如果听者听到由声
2、源直接发来的声和由反射回来的声的时间间隔超过十分之一秒,它就能分辨出两个声音这种反射回来的声叫“回声”。如果声速已知,当测得声音从发出到反射回来的时间间隔,就能计算出反射面到声源之间的距离。4The-strange-echo-奇怪的回声I New words1 Mark Twain was a famous American writer.famous:定义:widely known and esteemed,everyone know who she or he is(著名的)例子:The famous actress is now appearing at the Capital Thea
3、tre.(目前这位著名女演员正在首都剧场演出。)同义词:famed,notable5The-strange-echo-奇怪的回声I New words2 Mark Twain was a famous humorist.humorist:定义:someone who acts,speaks or writes in an amusing way.(滑稽家,幽默家)例子:That was a live performance by the humorist George Carlin about the differences between American baseball and foot
4、ball.(这就是美国幽默大师在现场表演,他在讲美国棒球和橄榄球之间的区别。)同义词:funnyman6The-strange-echo-奇怪的回声I New words3 During these speeches he always told several funny stories.several:定义:It is an adj word means few number of some things.(几个)例子:He tossed off several papers in half an hour.(他在半小时之内就看完了几份报纸。)Speech:定义:the act of de
5、livering a formal of spoken communication to audiences.(演讲)例子:His speech inspired the soldiers with courage.(他的演讲激发了战士们的勇气。)7The-strange-echo-奇怪的回声I New words4There are many humorous stories connected with his name.connect:定义:A and B join together,to be joined together.(使连接,使联系起来)例子:A good student m
6、ust connect what he reads with what he sees around him.(好学生必须会把他在书本里读到的东西与他在周围所看到的事物联系起来。)8The-strange-echo-奇怪的回声I New words5five times stranger than the original voice.original:定义:existing at the beginning of a particular period,process or activity.(起初的,独创的)例子:She was distracted from her original i
7、nterest.(她改变了自己原有的兴趣。)9The-strange-echo-奇怪的回声I New words6 The echoes that you have told about are very unusual.unusual:定义:different from what is usual or normal.(特别的,不寻常的)例子:This unusual sight fixed our attention.(不同寻常的景色把我们吸引住了。)10The-strange-echo-奇怪的回声II Special Difficulties of wordsTravel,trip&jo
8、urney 旅行1)Travel vi.表示从一个地点到另一个地点,即“旅行”n.指旅行的概念,而不指某一次特定的的旅行,不能与冠词连用,是不可数名词;它的复数形式表示一次长时间的,去过好几个地方的旅行。Eg:We travelled for over fifteen hours.(我们旅行了15个小时以上。)2)Trip n.是最常用的一个,既可以指旅行,又可以指访问,经常用来代替journey,是可数名词。11The-strange-echo-奇怪的回声II Special Difficulties of wordsTravel,trip&journey 旅行Eg:How long doe
9、s the trip last?(这次旅行将历时多久?)3)journeyn.指常去的访问某地并从访问过的地方回来的整个过程。一般指陆地上旅行,而且有预定的地点,是可数名词。Eg:We had a terrible journey.(我们这次旅行糟透了。)12The-strange-echo-奇怪的回声II Special Difficulties of wordsSound,Voice&Noise 声音,声响1)sound是任何可以听到的声音或声响。Eg:I could hear the sound of footsteps (我能听到脚步声)2)voice是人在说话或唱歌时所产生的声音,即
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