新概念英语青少AUnitTurnitdown概要.pptx

《新概念英语青少AUnitTurnitdown概要.pptx》由会员分享，可在线阅读，更多相关《新概念英语青少AUnitTurnitdown概要.pptx（20页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、Do you like these?Do you like these?第1页/共20页你对分贝了解多少？分贝（decibel）dB 分贝是以美国发明家亚历山大格雷厄姆贝尔（英国人，后移居美国）命名的，他因发明电话（1875年贝尔制成了实用的电话装置，1876年建起了世界上第一家电话公司。）而闻名于世。你知道一个声音与另一个声音结合时，会产生什么结果吗？我们都知道60个苹果加60 个苹果，等于120个苹果。但是，这并不适用于以分贝来表示的声音。事实上，60分贝加60分贝只等于63分贝。分贝对人的影响有什么？1020分贝几乎感觉不到。2040分贝相当于轻声说话。4060分贝相当于室内谈话。607

2、0分贝有损神经。第2页/共20页你对分贝了解多少？7090分贝很吵。长期在这种环境下学习和生活，会使人的神经细胞逐渐受到破坏。90100分贝会使听力受损。100120分贝使人难以忍受，几分钟就可暂时致聋。一般声音在30分贝左右时，不会影响正常的生活和休息。而达到50分贝以上时，人们有较大的感觉，很难入睡。维塔斯的高音是105分贝，而飞机起飞时螺旋桨发出的声音才110分贝！第3页/共20页New words and Expressionsloud adj.大声的，喧闹的turn it down 把.关小，调低interrupt v.打断hearing n.听觉sound n.声音，响声deaf

3、adj.聋的limit n.限度，极限decibel n.分贝（音量单位）continuous adj.连续不断的sudden adj.突然的第4页/共20页New words and Expressionsdamage n.损害nightclub n.夜总会MP3 player n.MP3播放器experience v.经历，体验if adv.conj.如果unlucky adj.不幸的，倒霉的for ever adv.永远level n.水平it doesnt matter 没关系 hire v.租用第5页/共20页New words and Expressionsfail v.没有通过（

4、考试）accident n.事故ambulance n.救护车robbery n.抢劫fire n.火灾，失火fire service n.消防署，消防队thief n.贼，小偷prison n.监狱apologize v.道歉a day off 休息一天pop concert n.流行音乐会第6页/共20页流行音乐会ambulancecontinuousfail limitlevel damageloud事故 prison打断听觉deaf thief hire没关系 抢劫分贝nightclub 消防队突然的 apologize不幸的 第7页/共20页Key wordsfailfeil-fai

5、lurefeilj n1.表示“失败”，通常是不及物动词。表示在某一方面失败，通常用介词 in。e.g:He failed in business.他经商失败。2.表示“(考试)不及格”，fail 可用作及物或不及物动词(以及物动词为多见)，所以在下面例句中 fail 后的介词 in 省略了：He failed(in)his driving-test.他驾驶考试没及格。3.其后可接不定式，意为“不能”“没有”“忘记”等。e.g:He failed to pass the exam.他考试没有及格第8页/共20页Key wordsapologeze vi.道歉，认错；辩解，辩护e.g:I apo

6、logize for being late.Apologize to your husband for anything you did wrong习惯用语apologize to sb.向某人道歉apologize to sb.for sth.向某人为某事(为做了某事)道歉apologize to sb.for doing sth.向某人为某事(为做了某事)道歉apologize for oneself为自已解辩或辩护第9页/共20页Lucy:Dad,that musics loud!Turn it down!William:Sorry,Lucy!Am I interrupting your

7、 homework?Lucy:Its not that,Dad.We had a lesson today about hearing.Look at this.Unit 11 Turn it down!第10页/共20页Notes on the Textinterrupt&interruption n.e.g:He tried to speak,but she interrupted him.interrupt 是打断的意思，主要打断别人正在进行的事情，如谈话，或者工作。disturb是打扰的意思，主要是打扰别人休息。bother是烦扰的意思，主要是指在某一时间段里，持续打扰别人并使别人烦恼

8、。that,代词，指代前面的一整句。第11页/共20页 One person in seven in the UK is deaf,and many of them are deaf because of noise.For most people,the safe limit is 85 decibels(dB)for continuous noise,and 103 dB for sudden noise.After fifteen minutes at 105 dB,most people will have some damage to their hearing.Unit 11 Tu

9、rn it down!第12页/共20页Notes on the TextOne person in seven in the UK is deaf 谓语动词用单数，两个in分别表示时间和地点，不做主语。because of，of为介词，后跟名词。e.g:Im here because of you.because conj.其后接原因状语从句或回答以why开头的问句；e.g:Because he is ill,he is absent today.decibel 复数：decibelse.g:Continuous exposure to sound above 80 decibels cou

10、ld be harmful.第13页/共20页 Music in nightclubs is often much louder than the safe limit.19%of young people listen to their MP3 players at 105 to 110 dB for many hours.75%of them will experience ringing in the ears,and they will feel a bit deaf.If they are lucky,this will last for one or two days.If the

11、y are unlucky,the damage will last for ever.Unit 11 Turn it down!第14页/共20页Notes on the Textmuch louder,通常用much修饰形容词或副词的比较级，表示.得多。类似的词还有 a bit，a little，rather，far，by far，many，a lot，lots，a great deal，any，still，evene.g:We will be a much better football team next year.experience n.经验，（不可数名词）；经历 vt.亲身参与，

12、亲身经历；感受；发现e.g:He has also had managerial experience on every level.I should not be in any danger here,but experience has taught me caution.We had never experienced this kind of holiday before and had no idea what to expect.第15页/共20页Notes on the TextIf they are lucky,this will last for one or two day

13、s.在由if引导的条件状语从句中，我们遵循主将从现的原则。即：主句用一帮将来时，从句用一般现在时。e.g:If it is fine tomorrow,we will go outing.在时间状语从句中，我们也遵循主将从现的原则。常见的时间状语从句的连词有：as soon as,when,while,as,until等。e.g:When I grow up,Ill be a nurse and look after patients第16页/共20页Lucy:Youre always listening to loud music,Dad.If you arent careful,youll

14、 become deaf.William:Sorry,Lucy!What did you say?Lucy:Oh,Dad!It isnt funny!William:Of course it isnt.And I will turn the sound down.I promise!Unit 11 Turn it down!条件状语从句第17页/共20页Notes on the Textpromise（v.允诺，许诺）to do sthe.g:He promised to help us.I cant give you the book because Ive promised it to Susan.n.许诺；希望，指望；允诺的东西e.g:Give me your promise that youll never be late again.与turn相关的词组turn down 降低音量 turn up 开大音量turn on 打开 turn off 关闭第18页/共20页 第19页/共20页感谢您的观看。第20页/共20页