2019_2020学年牛津译林版选修7 Unit3 The world online3.1知识点课件（80张ppt）

(共80张PPT)
Unit 3 The world online
词海拾贝
难句剖析
理解诱思
如今,网络已经被广泛地应用于我们生活的很多领域。但是网络的使用也成了社会上最有争议的话题之一。
词海拾贝
难句剖析
理解诱思
The Internet is becoming more and more popular.However,the usage of the Internet has become one of the most controversial① topics in the society.As we all know,there are many advantages for using the Internet.First,we can find much information online instead of going to different libraries.Also,the information can date back to decades ago.It is very helpful for most of us to use the Internet.In addition,the Internet provides us a better way to communicate with others.We can send and receive electronic messages,which are delivered instantly to people anywhere in the world,unlike traditional mails that take a lot of time.We can get response② from our friends within a few
词海拾贝
难句剖析
理解诱思
seconds.Sometimes some of our friends are living in a foreign country,we can simply just send him/her an email whenever we can and get a message from him/her very quickly.It is much better than waiting for letters.Also,the email will not be lost while the letter might be lost in the process of delivery.However,there are also some disadvantages.For example,we might spend too much time on the Internet to concentrate on our study.As a matter of fact,many teenagers are addicted to the Internet,which makes teachers and parents very worried.Also,there is a chance that we are cheated,especially while we are doing shopping online.Last,there is lots of information on the Internet,some of which is harmful.It will be harmful to us,especially some teenagers.
词海拾贝
难句剖析
理解诱思
译文:
网络变得越来越受欢迎了。然而,网络的使用也成了社会上最有争议的话题之一。我们都知道,使用网络有很多好处。首先,我们可以从网上找到很多信息,而不用去不同的图书馆。其次,信息可以追溯到数十年前。对于我们大多数人来说,使用网络是很有帮助的。另外,网络给我们提供
词海拾贝
难句剖析
理解诱思
了一个更好地与别人交流的方式。我们可以发送和接收电子信息,这些信息能立刻让世界上任何地方的人收到,不像传统信件要花很多时间。我们能够在几秒钟之内得到我们朋友的回复。有时,我们的一些朋友生活在外国,无论什么时候我们迅速收到他/她的信息,我们可以给他/她发邮件。这比等待书信好多了。还有,邮件不会丢失而信件可能会在投递的过程中丢失。然而,使用网络也有一些不好的方面。例如,我们可能会花太多时间上网而不能集中于学习上。事实上,有很多青少年痴迷于网络,这使得老师和父母都很担心。还有就是我们可能会被骗,特别是在网购时。最后,网络上有很多信息,有的是有害的。它可能对我们有害处,特别是对一些青少年。
词海拾贝
难句剖析
理解诱思
①controversial [?k?ntr??v???l] adj.有争议的
②response [rI?sp?ns] n.回应
词海拾贝
难句剖析
理解诱思
We can send and receive electronic messages,which are delivered instantly to people anywhere in the world,unlike traditional mails that take a lot of time.
我们可以发送和接收电子信息,这些信息能立刻让世界上任何地方的人收到,不像传统信件要花很多时间。
本句是一个复合句。which引导非限制性定语从句,修饰messages。that引导定语从句,修饰mails。
词海拾贝
难句剖析
理解诱思
1.From the passage we can infer that 　　　.?
A.the Internet doesn’t have any advantages
B.the Internet doesn’t have any disadvantages
C.the Internet has both advantages and disadvantages
D.the information on the Internet is always helpful
2.What do you think we should do to teach the teenagers how to use the Internet?
?
答案We should control their time spent on the Internet and tell them the disadvantages about the Internet.?
C
Section Ⅰ　Welcome to the unit & Reading
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一、写作词汇
预习Reading部分的词汇,完成下列小对话或语段
1.—What is the man you talked to just now?
—He is a famous 　　　　　　　　(教育工作者).?
2.—Do you know his 　　　　　　　　(缺点)??
—Yes,I know him very well.
3.—Where have you put your dictionary?
—I put it near my desk for 　　　　　　　　(查阅).?
4.—How do you keep in touch with him?
—I often 　　　　　　　　(通信)with him.?
educator　
weaknesses　
reference　
correspond
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5.The girl has a good 　　　　　　　?(掌握)of English,so she can understand the introduction about this 　　　　　　?(品牌).There are 　　　　　　　?(大量的)chances for her to practice her English.At the 　　　　　　　?(会议)she can understand others without any 　　　　　　　　(查阅).?
6.When he was young,he 　　　　　　　　?(退学)because of his sickness.But he didn’t give up learning by himself.He often read the newspaper covering a 　　　　　　?(多种多样的)range of issues.He was interested in some 　　　　　　　?(统计数字).He read them and then 　　　　　　　?(评价)them.Sometimes he doubted their 　　　　　　　?(准确性).?
command
brand
abundant
conference
reference
dropped out
diverse
statistics
evaluated
accuracy
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二、阅读词汇
预习Reading部分的词汇,写出画线部分的汉语意思
My English is poor.So when I read some articles in English,I often turn to 1.　　　　　　　　? the dictionary.My sister has a good command 2.　　　　　 of English,so I often ask her to help me.She can have a conversation with diverse 3.　　　　　　　　 people in English.She often attends some conferences 4.　　　　　　.She is very explicit 5.　　　　　　 at the conferences.?
向……求助　
掌握
形形色色的　
研讨会　
坦率的
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While-reading?
三、阅读THE EFFECTS OF THE INTERNET ON OUR LIVES,选择正确答案
1.What is the passage mainly about?
A.Lots of people’s attitudes towards the Internet.
B.We should use the Internet as little as possible.
C.The Internet is a good tool.
D.A debate about the effects of the Internet.
答案D
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2.Which of the following is not the evidence for the student who thinks the Internet has negative effects on our life to support his view?
A.It is difficult to judge whether the information on the Internet is true and accurate.
B.Some websites sell things that don’t exist.
C.Surfing the Internet costs too much money.
D.It is affecting people’s private lives.
答案C
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3.According to the passage,what are not the advantages of the Internet?
A.We can look for information on the Internet.
B.It provides us with a good tool to communicate with others.
C.It is especially convenient for the disabled people.
D.People can spend more time playing computer games.
答案D
4.What can we infer from the passage?
A.Everything has two sides.
B.The Internet has negative effects on our lives.
C.The Internet is a positive tool.
D.All people know the advantages and disadvantages of the Internet well.
答案A
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Post-reading?
四、下面一段文章是课文原文的浓缩,仔细阅读并根据课文内容将其补充完整
Zhu Fei and Li Lei had a debate about the advantages and disadvantages of the Internet use.Zhu Fei believes that the Internet has 1.　　　　　　　 effects on our lives.Zhu Fei first analysed the value for people 2.　　　　 are looking for information.He also mentioned the ability 3. 　　　　　 social bonds and form friendships.Internet friendships can be built 4.　　　　? on common interests.With the help of the Internet,the disabled can 5. 　　　　　　　 with others around the globe who have similar interests.?
positive　
who　
to build　
based　
correspond
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However,Li Lei thinks that the Internet has 6. 　　　　　　　 effects on our lives.Li Lei listed the negative effects.He thinks the main 7.　　　　　　　? of the Internet are that it has too much information that has not been evaluated for 8.　　　　　　　 and that it is transforming the way people spend their time.He thinks that the huge amount of 9.　　　　　? information becomes more of a problem.Another disadvantage of the Internet he referred to is the way that it is affecting people’s 10. 　　　　　　　 lives.?
negative　
drawbacks　
accuracy　
false　
private
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1.My name is Zhu Fei and I am speaking in favour of the Internet—I believe that the Internet has positive effects on our lives.(教材P34)
我叫朱菲,我代表支持互联网的一方发言——我相信互联网对我们的生活有积极的影响。
★考点　in favour of 支持
①I am all in favour of trying to find ways to save money.
我完全支持尽量想出省钱的办法。
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考点延伸?
阅读下列句子,指出黑体词组的含义
②They held a party in memory of the hero.
他们举行派对是为了纪念那位英雄。
含义 为了纪念
③In case of fire,please press the red button.
万一失火,请按这个红色按钮。
含义 万一
④A young man is in charge of the company.
一个年轻人掌管着这个公司。
含义 掌管
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⑤The middle-aged lawyer stood up in defence of the boy.
这位中年律师站起来为这个男孩辩护。
含义 为……辩护
⑥The local villagers walked into the forest in search of the missing boy.
当地的村民进入森林寻找那个失踪的男孩。
含义 寻找……
⑦The new school is in need of new teachers at present.
现在这个新学校需要新的老师。
含义 需要
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⑧In spite of the heavy rain,he went out without delay.
尽管下大雨,他还是立刻出发了。
含义 尽管
⑨We must make up our minds at once in view of the urgency of the case.
鉴于情况紧急,我们必须立刻下定决心。
含义 鉴于
⑩The president spoke in support of a ban on arms supplies.
总统讲话支持武器禁运。
含义 支持
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in favour of 支持
in memory of为了纪念
in case of万一
in charge of掌管
in defence of为……辩护;保卫
in search of寻找……
in need of需要
in spite of尽管
in view of鉴于
in support of支持
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2.When people need information,from the news and weather forecasts to travel packages and academic research,the Internet is now the first source they turn to.(教材P34)
从新闻、天气预报,到包价旅游、学术研究,当人们需求信息时,因特网现在已是许多人的首选。
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★考点　turn to 变成;求助于;致力于;转向
①Suddenly his heart seemed to turn to ice.
他的心忽然变得冷冰冰的。
②Open your books and turn to Page 20.
打开书,翻到第20页。
③Follow this road to the bookstore,and then turn to the left.
顺着这条路到书店,然后向左拐。
④You can turn to the professor for advice on how to conduct the experiment.
你可以向教授咨询如何做这个实验。
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考点延伸?
阅读下列句子,指出黑体词组的含义
⑤It’s dark here.Please turn on all the lights.
这里很黑,请打开所有的灯。
含义 打开
⑥When you leave the room,please turn off the computer.
当你离开房间时,请关闭电脑。
含义 关闭
⑦Would you please turn down the radio?
请你把收音机音量调小,好吗?
含义 调小
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⑧It is eight o’clock,but she hasn’t turned up.
都八点钟了,她还没有出现。
含义 出现
⑨It turned out that I was right all along.
结果表明我一直是正确的。
含义 结果是
⑩He will turn over the company to his son when he retires.
他退休后会把公司移交给儿子。
含义 移交
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turn on 打开(开关等)
turn off 关闭,关掉
turn down 调小;拒绝
turn up 出现,露面;开大
turn out 结果是
turn over 移交
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(4)The job turned 　　　　　to be harder than we thought.?
(5)Who will the old man turn 　　　　　his business to??
答案(1)down　(2)to　(3)up　(4)out　(5)over

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3.With the touch of a button or the click of a mouse,a student will find abundant information from the largest libraries and museums in the world at his or her command.(教材P34)
一名学生轻按键盘键或点击鼠标,就能从世界上最大的图书馆和博物馆找到大量信息,加以使用。
★考点一　abundant adj.大量的;充裕的
①There is abundant rain at this time of year.
每年的这个时候雨水充沛。
②The tree is abundant in fruit.
这棵树硕果累累。
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考点延伸?
1)阅读下列句子,指出黑体词的词性和含义
③I have an abundance of records.
我有多种唱片。
词性 名词　含义 丰富
2)阅读下列句子,指出黑体词构成的词组及其含义
④At the party there was food in abundance.
在聚会上有丰富的食物。
词组 in abundance　含义 丰富的?
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abundant adj.大量的;充裕的
be abundant in...在……方面上丰富
abundance n.丰富
in abundance 丰富的
abundant和enough
abundant 表示十分的充足,形容量多,多于需要的量。
enough 表示“足够”,但不多,可以提供需要的量。
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★考点二　command vt.&n.命令;控制;掌握;指挥
⑤Begin when I give the command.
在我发出命令时开始。
⑥Our products command a good market both at home and abroad.
我们的产品在国内外市场上都很畅销。
考点延伸?
阅读下列句子,指出黑体词构成的词组及其含义
⑦The soldiers will rush in at the officer’s command.
军官一下命令士兵们就会冲进来。
词组 at one’s command　含义 在某人的命令下?
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⑧General Li is in command of this army.
李将军统率这支军队。
词组 in command of　含义 统率;指挥?
⑨The girl has a good command of English.
这个女孩英语很好。
词组 have a command of　含义 掌握;精通?
⑩The officer commanded the audience to leave the building.
这位军官命令观众离开大楼。
词组 command sb.to do sth.　含义 命令某人做某事?
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command vt. & n.命令;控制;掌握;指挥
at one’s command 在某人的命令下
in command of 统率;指挥
have a command of 掌握;精通
command sb.to do sth.命令某人做某事
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command后接that从句时,从句中的谓语用“(should)+动词原形”,should 可省略。
11.The teacher commanded that the students(should)go out of the classroom.
老师命令学生们从教室里出去。
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command,order,direction和instruction
这些名词均含“命令”之意。
command较正式用词,强调权威性、全局性和强制性。
order普通用词,侧重指具体的命令。
direction正式用词,指口头或书面的指示或命令。不太强调强制性。也可指指导性的说明。
instruction书面用词,指不容违反、不容推翻的命令;也多指包含具体说明的指示。
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答案(1)at　(2)(should) enter　(3)in　(4)has a good command of French　(5)commanded the boy to leave the factory

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4.They claim that surfing the Internet is a waste of time.(教材P34)
他们说上网是浪费时间。
★考点　claim n. 声明,断言;索款;索赔　vt.宣称,断言;索取,认领
①The government would not even consider his claim for money.
政府甚至不考虑他的赔款要求。
②The matter claimed our serious attention.
这件事需要我们高度注意。
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考点延伸?
阅读下列句子,指出黑体词构成的词组及其含义
③The organization claims to represent more than 200 firms.
这个组织声称代表200多个公司。
词组 claim to do sth.　含义 声称做某事?
④It is wrong of you to make a claim so early.
你那么早就作出断言是错误的。
词组 make a claim　含义 作出断言?
⑤The player has a claim to the honour.
这个运动员有资格获得这荣誉。
词组 have a claim to sth.　含义 有对……的资格?
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claim n. 声明,断言;索款;索赔　vt.宣称,断言;索取,认领
claim to do sth.声称做某事
make a claim 作出断言
have a claim to sth.有对……的资格
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ask,beg,demand,require,request和claim
这些动词均有“要求,请求”之意。
ask 最普通用词,指向对方提出要求或请求,长、晚辈,上下级之间都可使用。
beg 指恳切地或再三地请求或要求,常含低三下四的意味,也多用于应酬场合。
demand 一般指理直气壮地提出强烈要求,或坚决不让对方拒绝的要求。
require 强调根据事业、需要或纪律、法律等而提出的要求。
request 正式用词,指非常正式,有礼貌地请求或恳求,多含担心因种种原因对方不能答应的意味。
claim 指有权或宣称有权得到而公开提出的要求。
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5.They make the assumption that children spend too much time chatting and playing games instead of focusing on their school work.(教材P34)
他们断定孩子们花太多时间聊天、玩游戏而不是集中在他们的功课上。
★考点　assumption n.假定;假设
①Your argument is based on a completely false assumption.
你的论点建立在一个完全错误的假设上。
②People tend to make assumptions about you based on your appearance.
人们往往以貌取人。
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考点延伸?
阅读下列句子,指出黑体词的词性和含义
③【高考典句】(2015湖北高考)“Hello!” I said to him,assuming he was just rolling for fun,but he was very still and,as I got closer,I saw him kicking his legs in the air and breathing heavily.I began to properly worry about him.
“你好!”我对他说,断定他只是滚着玩,但是他没有动,当我靠近时,我看到他正在踢腿,呼吸很沉重。我开始有点担心他。
词性 动词　含义 认为;假定
④Assuming your calculations are correct,we should travel northeast.
如果你的计算是对的,我们就该往东北方向走。
词性 连词　含义 如果
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assumption n.假定;假设
make assumptions 作出判断
assume v.认为;假定
assuming conj.如果
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(3)His look of astonishment was 　　　　　　　?.?
(4)We are going on the 　　　　　　　?that the work will be finished tomorrow.?
(5)I 　　　　　　?that this is the best possible translation.?
答案(1)Assuming　(2)assuming　(3)assumed (4)assumption　(5)assume

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6.What is more,people who are disabled and must stay in their homes can correspond and communicate with others around the globe who have similar interests.(教材P34)
此外,身有残疾而必须待在家里的人也能(通过因特网)与全球各地趣味相投的人们通信、交流。
★考点一　What is more 更有甚者,更为重要的是
①What is more,they will not have to rely on the written word.
而且,他们将不只依赖文字。
②It is too expensive.What is more,I don’t like the color.
它太贵了,而且,我不喜欢这个颜色。
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考点延伸?
1)阅读下列句子,指出黑体词的词性和含义
③The price is too high,and moreover,the house isn’t in a suitable position.
价格太高,而且房屋的地点也不太合适。
词性 副词　含义 而且
④He is inefficient,and furthermore/besides,he is innocent of any sense of responsibility.
他办事效率很低,而且没有丝毫责任感。
词性 副词　　含义 而且
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2)阅读下列句子,指出黑体词组的词性和含义
⑤It’s getting dark.In addition,it’s too cold.
天黑了,另外,也太冷了。
词性 副词　含义 另外


what is more 更有甚者,更为重要的是
moreover 而且
furthermore/ besides 而且
in addition 另外
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★考点二　correspond vi.通信;相一致;符合;相当于
⑥Your account of events corresponds with/to hers.
你对事情的陈述与她说的相符。
⑦I have been corresponding with him these years.
这些年我一直和他通信。
考点延伸?
1)阅读下列句子,指出黑体词的词性和含义
⑧There is a close correspondence between the two extracts.
这两段摘录如出一辙。
词性 名词　含义 一致
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2)阅读下列句子,指出黑体词构成的词组及其含义
⑨I have been in correspondence with him for months.
我与他通信数月了。
词组 in correspondence with　含义 和……通信?


correspond vi.通信;相一致;符合;相当于
correspond with/to sth. 与某事(物)相符合/一致
correspond with sb. 与某人通信
correspondence n. 对应;一致
in correspondence with 和……通信
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7.Without the Internet,these people would have fewer avenues to meet people.(教材P34)
如果没有因特网,这些人与别人交往的途径就会更少。
★考点　without,but for等介词短语表示含蓄条件,相当于一个if引导的虚拟条件句,既可表示与现在的事实相反的假设,又可表示与过去、将来的事实相反的假设。
①Without the electricity,we would have a harder time.
如果没有电,我们会过得更艰难些。
②Without your help,I couldn’t have succeeded.
没有你的帮助,我是不可能成功的。
③But for the heavy traffic,we would have arrived earlier.
要不是交通拥挤,我们会早到一些的。
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考点延伸?
阅读下列句子,用if 条件句表示句中暗含的条件?
④He would have given you more help,but he has been so busy.
他本来要多给你一些帮助的,只是他太忙了。
If条件句:if he had not been so busy?
⑤I would have written before,but I have been ill.
我本来该早给你写信的,但是我生病了。
If条件句:if I had not been ill?
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⑥I was ill that day.Otherwise I would have taken part in the parade.
我那天生病了,否则就会参加游行了。
If条件句:If I had not been ill that day?
⑦Anybody in her position would have done the same.
任何人处于她的位置都会这样做。
If条件句:If anybody had been in her position?
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8.The main drawbacks of the Internet I will address today are that it has too much information that has not been evaluated for accuracy,and that it is transforming the way people spend their time.(教材P35)
我今天所要谈及的因特网的主要缺点是网上有太多未经核准的信息,以及它正改变人们使用时间的方式。
★考点一　address vt.解决,探讨;向……演讲(或讲话);称呼(某人)　n.住址;演讲
①I’ll log in to the Internet to know about you.I know your address.
我将上因特网去了解你,我知道你们的网址。
②The mayor gave a television address yesterday evening.
市长昨晚作了电视演讲。
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★考点二　evaluate vt.评估;评价
③It is very hard to evaluate her as a singer.
要把她当歌手评价的话很难。
④The performance of each employee is evaluated once a year.
每年要对每位雇员的表现进行评价。
考点延伸?
阅读下列句子,指出黑体词的词性和含义
⑤The scientist is giving a speech about the evaluation of the data.
这位科学家正在做关于数据评估的演讲。
词性 名词 　含义 评估?


evaluation n.评估
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★考点三　accuracy n.准确性;精确度
⑥He’s a man of accuracy and strict method.
他是个精细而严谨的人。
⑦Accuracy is more important than speed in his new job.
对于他的新工作,准确性比速度更重要。
考点延伸?
阅读下列句子,指出黑体词的词性和含义
⑧“It is not accurate,I can tell you,” he said.
他说:“我可以告诉你,它是不准确的。
词性 形容词　含义 准确的
⑨We should train our students to speak English fluently and accurately.
我们应培养我们的学生流利而准确地讲英语。
词性 副词　含义 准确地
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9.One great weakness of the Internet,though,is that it is difficult to know whether the information is true and accurate.(教材P35)
然而,因特网的一个大的缺点是,很难知道信息是否是真的和准确的。
★考点　weakness n.缺点,不足;弱点;虚弱,衰弱
①That is because I have always known about your weakness.
那是因为我一直知道你的弱点。
②Generally,that is fine,but you should be aware of one potential weakness.
一般来说,这是可以的,但你应该注意一个潜在的弱点。
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考点延伸?
1)阅读下列句子,指出黑体词的词性和含义
③The woman was too weak to lift the box.
这个女人太弱而举不起这个箱子。
词性 形容词 　含义 弱的?
④“Yes,” she said weakly,and lowered her head.
那个女人虚弱地说道:“是的,”然后低下了她的头。
词性 副词　含义 虚弱地
2)阅读下列句子,指出黑体词构成的词组及其含义
⑤My son is good at English,but he is weak in maths.
我的儿子英语很好,但是数学很差。
词组 be weak in　含义 在……方面很弱?
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weakness n.缺点;弱点
weak adj.弱的
weakly adv.虚弱地
be weak in 在……方面很弱
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10.One university did a study about the students who had dropped out...(教材P35)
一所大学做了关于辍学学生的研究……
★考点　drop out 退学,辍学;退出,脱离
①He dropped out because of the strict rules of the school.
由于校规很严,所以他退学了。
②She dropped out of school to become a waitress.
她退学去当了女服务员。
考点延伸?
阅读下列句子,指出黑体词构成的词组及其含义
③Why don’t you drop by for coffee some time?
为什么不找个时间到我家喝杯咖啡?
词组 drop by　含义 顺便拜访?
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④Support for him has begun to drop away.
他的支持率开始下降。
词组 drop away　含义 下降?
⑤Mary dropped behind to walk with Sam.
玛丽落在后面与山姆一起走。
词组 drop behind 　含义 落在后面?
⑥Will you drop in on your friend when you get there?
你到了那里时,你去拜访朋友吗?
词组 drop in on sb.　含义 拜访某人?
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drop by 顺便拜访
drop away 下降;(一个一个地)离开,散去
drop behind 落在后面,落伍
drop in on sb.拜访某人
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11.This study shows that people who spend too much time on the Internet tend to withdraw from the people and the world round them.(教材P35)
这项研究显示,在网上花费太多时间的人有离群避世的倾向。
★考点　withdraw vi.& vt.脱离(社会),不与人交往;撤退;取(款)
①Mother withdrew $100 from her account.
妈妈从账户上取出100美元。
②The leader has promised to support the plan;you can’t withdraw now.
领导已答应支持这项计划,现在你们不能收回承诺。
③He wanted to withdraw his name from the guest list.
他想从客人名单中撤出他自己的名字。
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withdraw vi.& vt.脱离(社会),不与人交往;撤退;取(款)
withdraw...from...使……从……中撤回
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(2)He may withdraw into his own private world.　　　　　　　　??
(3)I need to withdraw 10,000 yuan from the bank.　　　　?
答案(1)撤退　(2)不与人交往;蜷缩　(3)取款

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12.This is an unfortunate aspect of the Internet that alarms me.(教材P37)
这是因特网令我害怕的不幸的一面。
★考点　alarm vt.使担心,使害怕,使警觉　n.警报(器);惊慌;闹钟
①【高考典句】(2015陕西)While he sounded the alarm,a student from Leeds climbed down the cliff to collect Judy.
当他拉响警报时,一位来自利兹的学生爬下悬崖去救朱迪。
②Alarm everyone quickly because the house is full of smoke.
快警告大家,屋子里都是烟。
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考点延伸?
阅读下列句子,指出黑体词构成的词组及其含义
③We were much alarmed by/at the fire in the forest.
森林失火使我们大为惊慌。
词组 be alarmed by/at...　含义 被……吓了一跳?
alarm vt.使担心,使害怕,使警觉　n.警报(器);惊慌;闹钟
be alarmed by/at... 被……吓了一跳
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