新概念英语青少版3A:Unit 11 Turn it down! 课件(35张PPT)

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名称 新概念英语青少版3A:Unit 11 Turn it down! 课件(35张PPT)
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更新时间 2019-06-20 15:33:34

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课件35张PPT。Unit 11 Turn it down!Do you like these?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?
★ 10~20分贝几乎感觉不到。   
★ 20~40分贝相当于轻声说话。   
★ 40~60分贝相当于室内谈话。   
★ 60~70分贝有损神经。 你对分贝了解多少? ★ 70~90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。   
★ 90~100分贝会使听力受损。   
★ 100~120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!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 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 doesn't matter 没关系
hire v. 租用New words and Expressionsfail v. 没有通过(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Key words1. fail[feil] --failure['feilj?] n
(1). 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。

他数学考试没及格。He has failed his math exam.(3)其后可接不定式,意为“不能”“没有”“忘记”等。
fail to do sth.
e.g: He failed to pass the exam.
他考试没有及格
2. turn it down
(1) turn down 调低
(2) turn up 调高
(3) turn on 打开
(4) turn off 关上
3. hire 录用 聘用
hire sb.
4. apologeze vi.道歉,认错;辩解,辩护
apologize to sb for sth.
e.g: I apologize 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5. accident 事故
car accident
traffic accidentNew 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 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 doesn't matter 没关系
hire v. 租用New words and Expressionsfail v. 没有通过(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 New words:Lucy: Dad, that music’s loud!
Turn it down!
William: Sorry, Lucy!
Am I interrupting
your homework?
Lucy: It’s not that, Dad.
We had a lesson today
about hearing.
Look at this.Unit 11 Turn it down!Notes on the Textinterrupt v. 打断
interrupt sth. =sth is interrupted by…
e.g: He tried to speak, but she interrupted him.
他尝试着去说出来,但是她打断了他。
不要打扰我。
Don't interrupt me!
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。
interrupt & interruption n. have a lesson about1. 上周四我们上了一节关于健康的课。(have a lesson about)
2. 明年我们要上关于电影的课程。We had a lesson about health last Thursday.We are going to have a lesson about films next year.One person in
seven in the UK is
deaf, and many of
them are deaf
because of noise.
Unit 11 Turn it down!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.
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: I'm 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.
Notes on the Text
damage n&v 损坏,伤害
1. v. damage sth. 损坏某物
2.n. (可数) have some damage to sb./sth. 对某物或某人有伤害
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 they are unlucky, the damage will last for ever.Unit 11 Turn it down!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,even
e.g: We will be a much better football team next year.
experienceexperience n.经验,(不可数名词);经历(可数)
vt.亲身参与,亲身经历;感受;发现
e.g. We had never experienced this kind of holiday before . (动词)
Notes on the Text条件状语从句:由引导词if或unless引导的状语从句叫做条件状语从句。条件是指某一件事情实现之后(状语从句中的动作),其它事情(主句中的动作)才能发生,通常译作“假如”。
If you aren’t careful, you’ll become deaf.
if引导的条件状语从句:
1. 表示在某种条件下某事很可能发生;
2. if……后面的是从句,you‘ll……是主句;
3. 从句可以放在前面,也可以放在后面;
4. 主句用一般将来时,从句用一般现在时。Notes on the TextIf they are lucky, this will last for one or two days.
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, I’ll be a nurse and look after patientsPractice:1. 如果你请他帮忙,他会帮你的。
2. 我有时间我就来看你。
3. 如果雨停了,我就去洗车。If you ask him, he will help you.I will visit you if I have time.I will wash the car if it doesn't rain.Lucy: You’re always listening to
loud music, Dad.
If you aren’t careful,
you’ll become deaf.
William: Sorry, Lucy!
What did you say?
Lucy: Oh, Dad! It isn’t funny!
William: Of course it isn't.
And I will
turn the sound down.
I promise!Unit 11 Turn it down!条件状语从句Notes on the Textpromise (v. 允诺,许诺)
(1) promise to do sth
e.g: He promised to help us.
(2) promise sb. sth.=promise sth to sb.
承诺给某人某物
e.g. I can't give you the book because I've promised it to Susan.
n. 许诺;希望,指望;允诺的东西
make a promise
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