lesson 21
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七年级英语下册Lesson21教材内容详解冀教版
Lesson 21 Sending an发送电子◆课文英汉对照THINK ABOUT IT! 想一想！●Do you have a puter? Where can you buy one?你有电脑吗？你在哪里能够买到电脑？●Do you use ? Who do you like to send to?你使用电子吗？你喜欢给谁发电子？●When will Danny go home?丹尼什么时候回家？Danny:Excuse me.Does the hotel have aputer?丹尼：请问，宾馆有电脑吗？Waiter:Yes!I can show you.Go straight down this hall.Here it is!服务员：有，让我领着你们去看。
沿着大厅走廊往前走。
它在这儿呢。
Danny:Great! May I send my friend an ?丹尼：好极了！我可以给我的朋友发一封电子吗？Waiter: Yes,it is five yuan per hour.服务员：可以，每小时5元。
Danny: Okay!Thanks!丹尼：好！谢谢！Waiter:You’re wele. I write you a letter,我给你写了一封信，On paper with a pen.用钢笔在纸上写。
I put it an envelope,我把它放在信封里，For you again.又寄给了你。
I write you an .我饿你写了一封电子。
Where do I write my name? 我把某某写在哪？Write it at the bottom.把它写在底部。
重点难点详解1．Excuse me.Does the hotel have a puter?请问，宾馆有电脑吗？Excuse me是一句口语的礼貌用语。
多用于在打扰别人之前。
可用于生活中的很多情景，下面为你归纳了它在日常生活中的10种常见用法。
lesson 21
一单项选择： 1. There was _____ calling you just now. A. some persons B. some person C. any persons D. any person 2. The refrigerator ______ . A. has been come into wide use. B. has become into wide use C. has coming into wide use. D. has come into wide use. 3. They ______ upstairs, for the light was on. A. must have been B. ought have been C. can have been D. had to have been
First listen and then recite the passage 听录音，然后背诵课文
飞机正在逐渐把我逼疯。我住在一个机场附近， 飞机正在逐渐把我逼疯。我住在一个机场附近， 过往飞机日夜不绝于耳。机场是许多年前建的， 过往飞机日夜不绝于耳。机场是许多年前建的， 但由于某种原因当时未能启用。 但由于某种原因当时未能启用。然而去年机场开 始使用了。 始使用了。有100多人肯定是被噪音逼得已经弃家 多人肯定是被噪音逼得已经弃家 远去，我是少数留下来的人中的一个。 远去，我是少数留下来的人中的一个。有时我觉 得这房子就要被一架飞过的飞机撞倒。 得这房子就要被一架飞过的飞机撞倒。他们曾向 我提供一大笔钱让我搬走，但我决定留在这儿。 我提供一大笔钱让我搬走，但我决定留在这儿。 大家都说我肯定是疯了，也许他们说的是对的。 大家都说我肯定是疯了，也许他们说的是对的。
Key to Summary writing
新概念英语lesson 21
He will repair your watch. Your watch will be repaired (by him).
He can repair your watch.
Your watch can be repaired by him.
They must test this new car. This new car must be tested.
The work will be finished (by them) in ten days. 一般将来时： S+ will+be+过去分词
5. Some workers are painting the rooms now．
The rooms are being painted by some workers now. 现在进行时： S+ am/is/are + being +过去分词
Language points
2. Over a hundred people must have been driven away from their homes by the noise.
drive away：（把车）开走，驱散，赶走
How can I drive away these feelings of sadness?
6．We have made twenty more keys．
Twenty more keys have been made by us. 现在完成时： S+ have/has + been+过去分词
7．I was doing my homework at 8:00 last night．
(完整版)新概念英语第二册学生用书Lesson21.
是不是疯疯了?Lesson 21 Mad or not? 是不是First listen and then answer the question.听录音,然后回答以下问题。
Why do people think the writer is mad?Aeroplanes are slowly driving me mad. I live near an airport and passing planes can be heard night and day. The airport was built years ago, but for some reason it could not be used then. Last year, however, it came into use. Over a hundred people must have been driven away from their homes by the noise. I am one of the few people left. Sometimes I think this house will be knocked down by a passing plane. I have been offered a large sum of money to go away, but I am determined to stay here. Everybody says I must be mad and they are probably right.和短语语New words and expressions 生词和短mad(1. 1/m$d/adj. 发疯sum(1. 7/sm/n. 量reason(1. 3/'ri:z+n/n. 原因determined(1. 8/di't*:mind/adj. 坚定的,下决心的文注释释Notes on the text 课文注1 Aeroplanes are slowly driving me mad.飞机正在逐渐把我逼疯。
【中文注释】五年级上册英语课文lesson 21
【中文注释】五年级上册英语课文lesson 21
现在小学英语的教学，并不给学生教授单词的音标，也不针翻译单词的具体意思，只是让学生知道课文中语句、对话的大概意思。
这样的结果是，孩子们可能看着课文会读，离开课本就基本上什么都不知道了。
因此，将课本（北京出版社）中的语句按照单词、语句每个都翻译，让孩子在朗读的时候就知道每个单词、每个句子的准确意思，明明白白地学习，十分有意义。
这样，笔者将英语课文进行了逐词、逐句的翻译，供有需要的家长和孩子们使用。
祝你们在英语学习上能更进步。
Lesson 21
课后：。
新概念英语第二册课件Lesson21(共37页)
Lesson 21 Mad or not? 是不是疯了？
Aeroplanes are slowly driving me mad. I live near an airport and passing planes can be heard night and day. The airport was built during the war, but for some reason it could not be used then. Last year, however, it came into use. Over a hundred people must have been driven away from their homes by the noise. I am one of the few people left. Sometimes I think this house will be knocked down by a passing plane. I have been offered a large sum of money to go away, but I am determined to stay here. Everybody says I must be mad and they are probably right.
Left
Left 作为定语的时候放在名词的后面 There is only 2 yuan left in my pocket . There is nobody left in the room.
Come in to use
Come into use 投入使用 When did this words come into common use ? The airport come into use last year. go out of use The present phone boxes will go out of use .
新概念第一册lesson21
间接宾语
give sb. sth.
直接宾语
他给了我一支钢笔。
He gives me a pen. give sb. sth. He gives a pen to me. 他给了我一支钢笔. to me用来说明“给”这个动作
give sth. to sb.
但若要先说出直接宾语（事物），后说间接宾语 （人）， 则要借助于介词to 或for
Which book?
MAN: Give me a book please, Jane. WOMAN: Which book?This one? MAN: No, not that one. The red one. WOMAN: This one? MAN: Yes, please. WOMAN: Here you are. MAN: Thank you.
❖ 主谓宾（双宾）句型
❖ 主谓宾（双宾）句型双宾动词：英语中可 以接两个不是并列关系、不是同位关系、 也不是逻辑主谓关系的名词短语做宾语的 动词叫双宾语及物动词，简称为“双宾动 词”。
❖ 双宾结构： ❖ 主语+及物谓语动词+间接宾语（人）+直接
宾语（事物）
full-empty
Unit 11
3
1
2
❖ give v. 给
❖ give up 放弃 give in 屈服 give a talk 作一次演讲 receive v. 收到
❖ someone 有人 anyone 任何人
it, one, that 它们三词均作代词用，指代前 文提到的名词。
it所指是同名同物，one和that所指是同名异 物，It 和that都可以指代上文的一部分或全 句,而one不能。
八年级lesson21 Eat a Donut and Turn Right
c. grocery store C. Go there to see a film.
d. movie theatre D. Park your car there.
e. parking lot E. Buy books.
f. bookstore F. Buy some fruits and vegetables there.
c. There was a serious accident at the ________ yesterday.
纠错记忆
课后反思
检查
小组长签名__________________
教师签名__________________
d. It is the wrong place. → It isn’t the ________ place.
e. I can’t find the way. → I am ________.
f. Can you tell me how I can get to the cinema? → Can you tell me ________?
i. Basketball is popular in America. → Many people ________ it very much.
j. The coffee shop sells a lot of drinks. → The coffee shop sells ________ drinks.
c. I like ________ TV after I finish my homework.
7. cross/across/crossing
a. You must be more careful when you ________ the road.
d. movie theatre D. Park your car there.
e. parking lot E. Buy books.
f. bookstore F. Buy some fruits and vegetables there.
c. There was a serious accident at the ________ yesterday.
纠错记忆
课后反思
检查
小组长签名__________________
教师签名__________________
d. It is the wrong place. → It isn’t the ________ place.
e. I can’t find the way. → I am ________.
f. Can you tell me how I can get to the cinema? → Can you tell me ________?
i. Basketball is popular in America. → Many people ________ it very much.
j. The coffee shop sells a lot of drinks. → The coffee shop sells ________ drinks.
c. I like ________ TV after I finish my homework.
7. cross/across/crossing
a. You must be more careful when you ________ the road.
Lesson21课件冀教版八年级英语上册
5. Stephen Hawking got more than 380， 000 folowers in two hours _____C___he put his first message onWeibo. A. before B. since C. after D. until
must的其他用法：
turn left / turn right
• 在正前方 • on the sidewalk • say to oneself
be straight ahead 在人行道上 心里想，自言自语
• 五分钟后 • at the entrance of
five minutes later 在... 的入口处
3.-Look!Someone left abook. 一Oh，yeah...This book_B_____ be Kitty's. Only she likes to
read this kind of book . A. can B. must C.may D. might
4.-Excuse me， where is the nearest busstop?____B_______ A.Idon't want to say anything B.Go straight ahead for 50 meters C.It will take an hour to go there D.Youcango thereby bus
can't + 动词原形，表示否定推测，有把握。 may + 动词原形，表示推测，无把握。 must + 动词原形，表示肯定推测，有把握
e.g.He must be in the classroom now.翻译：_他_现__在__一__定__在_教__室__。_
must的其他用法：
turn left / turn right
• 在正前方 • on the sidewalk • say to oneself
be straight ahead 在人行道上 心里想，自言自语
• 五分钟后 • at the entrance of
five minutes later 在... 的入口处
3.-Look!Someone left abook. 一Oh，yeah...This book_B_____ be Kitty's. Only she likes to
read this kind of book . A. can B. must C.may D. might
4.-Excuse me， where is the nearest busstop?____B_______ A.Idon't want to say anything B.Go straight ahead for 50 meters C.It will take an hour to go there D.Youcango thereby bus
can't + 动词原形，表示否定推测，有把握。 may + 动词原形，表示推测，无把握。 must + 动词原形，表示肯定推测，有把握
e.g.He must be in the classroom now.翻译：_他_现__在__一__定__在_教__室__。_
新概念英语第二册-(Lesson-21---Mad-or-not)课件
学习交流PPT
12
Lesson 21 Mad or not ?是不是疯了
be crazy about…
eg. I slowly go insane/go crazy/go mad.
They are going bananas.
go bananas [bə'nɑ:nəz] (go+adj. 变得……)
=go crazy=go mad
(变疯了)
be mad at sb. 生某人的气(=be angry with sb.)
学习交流PPT
5
★reason n. 原因，理性
• 理性，正常心智 • eg. Only man has reason. 只有人类才有理性。 • lose one’s reason 丧失理智 • beyond all reasons 毫无道理 • bring a person to reason 使（某人）明白道理，
下定决心做某事 下定决心
make up one's mind
decide to do sth. 决定做
=make a decision to do sth.
determine v.下定决心
Details determine success.
细节决定成败。学习交流PPT
10
determined [dɪ'tɜ:mɪnd] adj.
decide
学习交流PPT
11
Home and House home n. & adv. 家，家庭，家园 (着重指所居住的人，常有爱、温暖等隐含
意义，有感情色彩) eg. I have a sweet home. 我有一个甜蜜的家
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Dalian Ocean University
The correct location for a thermostat to control a block of cabins is more difficult to find. find.
Dalian Ocean University
One can pick on a “typical” cabin— cabin—but if the occupant 舷窗) opens his porthole(舷窗) he can upset the whole block. block.
Dalian Ocean University
If the recirculation grill(再循环 grill(再循环 格栅口) 格栅口) is close to an outside door, this position too can be affected by outside air temperature when the door is open, rather than by cabin temperature. temperature.
Dalian Ocean University
This tendency helps installation as the size of ducts is reduced and prefabricated( 预 制 ) standard ducts can be used, but it incurs( 招 致 ) the heavier running costs of more powerful fans. fans.
When cooling is by direct expansion, expansion, a separate steam heater coil is fitted in the unit for winter heating. heating.
Dalian Ocean University
Dalian Ocean University
Yet another possibility is to site the thermostat in the recirculation air trunk, trunk, carrying air back from the accommodation to the unit. unit.
Dalian Ocean University
With ducted systems, the modern tendency is to use “high velocity” in the air ducts with fans generating up to 2550 mbar (250 mmH2Og) pressure compared to “low velocity” in the air ducts with fans generating about 520 mbar (50 mmH2Og). Og).
Dalian Ocean University
Another possibility is to site the thermostat in the alleyway(通 cabins. 道) of the block of cabins.
Dalian Ocean University
This position may be affected more by an open door or draught(气流) in the alleyway 气流) than by the temperature of the cabins. cabins.
Dalian Ocean University
Water cooled condensers are used. used. As these contain small water passages（ 通道） choking(堵塞 passages （ 通道 ） , choking( 堵塞 ) 堵塞) develops rapidly with direct sea water circulation and a better method is circulate with fresh water, itself cooled in a sea water/fresh water heat exchanger. exchanger.
Dalian Ocean University
Air terminals lined with sound insulation material are necessary to reduce the noise passing into the room with high velocity systems. systems.
In themselves, they are all satisfactory instruments, but the results they achieve are dependent on the correct sitting of their sensing elements. elements.
The cooling coil of the central unit may be of the direct expansion, expansion, brine( 盐 水 ) or chilled( 使 冷 , 变 冷 ) water cooled type. type.
Dalian Ocean University
Dalian Ocean University
风机
Dalian Ocean University
SelfSelf-contained units are noisier than central systems, require more maintenance and have been found to have a relatively short life (about 7 years.) years.
Dalian Ocean University
Even the site for a direct acting thermostat to control one single berth( 铺 位 ) cabin must be chosen with care—if it is care— masked behind curtains, or too far away from the air inlet control will be too sluggish(不 sluggish(不 灵敏的、迟缓的) 灵敏的、迟缓的).
Dalian Ocean University
Control is on/off by a thermostat （ 温 度 调 节 装 置 ） sensing the temperature of air returning to the unit. unit.
Dalian Ocean University
Dalian Ocean University
In extreme weather conditions, either hot or cold, control of the plant usually presents few difficulties. difficulties.
Dalian Ocean University
The single duct system only allows for adjustment of temperature in each room by the occupant manually controlling the air volume admitted. admitted.
Dalian Ocean University
It is thus less flexible than any of the other systems, which systems, allow individual temperature control, control, at least of sections（区 域） of the ship if not individual rooms. rooms.
Dalian Ocean University
In a typical marine pattern selfselfcontained unit, air circulation unit, is usually effected by means of a centrifugal fan, for quiet fan, running, running, and a direct expansion cooler served by a hermetic( 密 封 的 , 气 密 的 ) compressor. compressor.
With brine or water coolers, a coolers, central heater is used so that the same coil serves for summer or winter. winter.
Dalian Ocean University
Thermostatic control is provided sensing air delivery temperature itself, the temperature of the room, or the return air temperature. temperature.
Dalian Ocean University
and central systems, where systems, larger refrigeration machinery units are installed and their output distributed about the ship by a variety of means. means.
The correct location for a thermostat to control a block of cabins is more difficult to find. find.
Dalian Ocean University
One can pick on a “typical” cabin— cabin—but if the occupant 舷窗) opens his porthole(舷窗) he can upset the whole block. block.
Dalian Ocean University
If the recirculation grill(再循环 grill(再循环 格栅口) 格栅口) is close to an outside door, this position too can be affected by outside air temperature when the door is open, rather than by cabin temperature. temperature.
Dalian Ocean University
This tendency helps installation as the size of ducts is reduced and prefabricated( 预 制 ) standard ducts can be used, but it incurs( 招 致 ) the heavier running costs of more powerful fans. fans.
When cooling is by direct expansion, expansion, a separate steam heater coil is fitted in the unit for winter heating. heating.
Dalian Ocean University
Dalian Ocean University
Yet another possibility is to site the thermostat in the recirculation air trunk, trunk, carrying air back from the accommodation to the unit. unit.
Dalian Ocean University
With ducted systems, the modern tendency is to use “high velocity” in the air ducts with fans generating up to 2550 mbar (250 mmH2Og) pressure compared to “low velocity” in the air ducts with fans generating about 520 mbar (50 mmH2Og). Og).
Dalian Ocean University
Another possibility is to site the thermostat in the alleyway(通 cabins. 道) of the block of cabins.
Dalian Ocean University
This position may be affected more by an open door or draught(气流) in the alleyway 气流) than by the temperature of the cabins. cabins.
Dalian Ocean University
Water cooled condensers are used. used. As these contain small water passages（ 通道） choking(堵塞 passages （ 通道 ） , choking( 堵塞 ) 堵塞) develops rapidly with direct sea water circulation and a better method is circulate with fresh water, itself cooled in a sea water/fresh water heat exchanger. exchanger.
Dalian Ocean University
Air terminals lined with sound insulation material are necessary to reduce the noise passing into the room with high velocity systems. systems.
In themselves, they are all satisfactory instruments, but the results they achieve are dependent on the correct sitting of their sensing elements. elements.
The cooling coil of the central unit may be of the direct expansion, expansion, brine( 盐 水 ) or chilled( 使 冷 , 变 冷 ) water cooled type. type.
Dalian Ocean University
Dalian Ocean University
风机
Dalian Ocean University
SelfSelf-contained units are noisier than central systems, require more maintenance and have been found to have a relatively short life (about 7 years.) years.
Dalian Ocean University
Even the site for a direct acting thermostat to control one single berth( 铺 位 ) cabin must be chosen with care—if it is care— masked behind curtains, or too far away from the air inlet control will be too sluggish(不 sluggish(不 灵敏的、迟缓的) 灵敏的、迟缓的).
Dalian Ocean University
Control is on/off by a thermostat （ 温 度 调 节 装 置 ） sensing the temperature of air returning to the unit. unit.
Dalian Ocean University
Dalian Ocean University
In extreme weather conditions, either hot or cold, control of the plant usually presents few difficulties. difficulties.
Dalian Ocean University
The single duct system only allows for adjustment of temperature in each room by the occupant manually controlling the air volume admitted. admitted.
Dalian Ocean University
It is thus less flexible than any of the other systems, which systems, allow individual temperature control, control, at least of sections（区 域） of the ship if not individual rooms. rooms.
Dalian Ocean University
In a typical marine pattern selfselfcontained unit, air circulation unit, is usually effected by means of a centrifugal fan, for quiet fan, running, running, and a direct expansion cooler served by a hermetic( 密 封 的 , 气 密 的 ) compressor. compressor.
With brine or water coolers, a coolers, central heater is used so that the same coil serves for summer or winter. winter.
Dalian Ocean University
Thermostatic control is provided sensing air delivery temperature itself, the temperature of the room, or the return air temperature. temperature.
Dalian Ocean University
and central systems, where systems, larger refrigeration machinery units are installed and their output distributed about the ship by a variety of means. means.