课前预习导学
课标导航 功能 Talking about percentage and numbers（谈论百分比和数量） 1．About 80 percent of web traffic is in English. 2．In 5 years，the number of Internet users rose from 600,000 to 40 million. 1.It then became possible for universities to use the system as well. 之后，也让大学使用这个系统成为可能。 2．BernersLee made it possible for everyone to use the Internet，not just universities and the army. 贝尔纳斯·李让每个人使用互联网变为可能，不仅仅是在大学和军队使用。 1.Compound words （合成词） 2．Definite and zero articles （定冠词和零冠词） Expressing views（陈述观点） as well as （2012四川高考，14）；it作为形式主语（2012浙江高考，3）；while （2011北京高考，29）；go over （2011四川高考，7） 句型 语法 写作 考点 主题导读 你是否感觉一天不更新博客就很难度过？一天不打开QQ聊天室就觉得像是局外人？读读下面这篇文章吧！
Social Interaction?
Do you find it hard to go through a day without updating your micro blog？Do you feel out of the loop if you are not chatting on QQ?
For many teenagers around the world，social media has become a big part of their lives.They constantly tell us that communication has never been easier and that you can connect to friends with the click of a button.But is this a good thing?
Yahoo reported that scientists have found that social networking sites are a way in which youngsters isolate（孤立）themselves；they tend to use the Internet to avoid human contact and escape from real problems.And the study by Common Sense Media has confirmed （确认）this.According to the organization，many teenagers believe that using social media takes away the time they spend facetoface with friends.One participant in the study said：“Technology and social networking have absorbed（影响） some of my close friendships，and they've dwindled（退化）．I miss the times when we could just go hang out and laugh.”
The organization also reports that more than a third of US teenagers want to unplug（关机） in order to avoid overexposure to negative information.The Washington Post reports that 90 percent of teenagers in the country say they have witnessed their peers being bullied（欺负）on social networking sites.According to the newspaper，some teenagers present their“alter ego（个性的另一面）”on social media，engaging in （参与） conversations with more bravado（逞强）and taking more risks than they do in person.
And some teenagers want to disconnect to enjoy being alone.One teenager said they disliked social media because sometimes being alone is important—“It's nice to just sit back and relax with no possible way to communicate with anyone in any way.”
词海拾贝
escape from 逃离
take away 夺走；剥夺
participant 参加者；参与者 hang out 闲逛
witness 目击；见证 take risks 冒险 难句点拨
I miss the times when we could just go hang out and laugh. when引导的定语从句修饰先行词times。 诱思探究
Read the passage carefully and choose why many teenagers want to unplug. a．to protect their privacy
b．to have more time during which they can be alone c．to spend more time with their friends d．to escape from their real problems
e．to reduce their exposure to negative information 答案：b，c，e 基础导练
Ⅰ.词汇拓展
1．______ vt.包含；包括→______ n．容器
2．______ n．接近；通路→______ adj.可进入的；可使用的 3．______ n．（复）数据→______ adj.可确定日期的
4．______ n．保护；防卫→______ vt.防御；保卫；保护→______ n．防御者；保护者 5．______ vt.设计→______ n．设计者
6．______ n．发明→______ v．发明→______ n．发明者 7．______ n．许可→______vt.许可
8．______ vi.集中（注意力、思想等）→______ n．集中；专注 9．______ adj.明确的→______ adv.明确地→______ n．定义；清晰 10．______ adj.独立的→______ adj.依赖的→______ v．依靠；依赖 11．______ adv.时常；经常→______ adj. 经常的；频繁的 12．______ n．弊端；缺点→______ n．优势；长处 13．______ vt.缩短→______ adj.短的 Ⅱ.英汉互译
1．由……组成____________ 2．作为……而出名____________ 3．提出（建议）____________
4．与……相一致；同意____________ 5．集中注意力于____________ 6．have access to____________ 7．as well____________ 8．go down____________ 9．by design____________
10．compare ...to ...____________ Ⅲ.重点句型
1．______ then became possible for universities to use the system as well. 之后，也让大学使用这种系统成为可能。
2．He came up with the idea of the World Wide Web in 1989 ______ he was working in Switzerland.
1989年他提出创建万维网的想法，那时候他还在瑞士工作。
3．It would be much better ______ we spent the time working on a computer. 如果我们把时间花在计算机工作上，就会好很多。
答案：Ⅰ.1.contain；container 2.access；accessible 3.data；datable 4.defence；defend；
defender 5.design；designer 6.invention；invent；inventor 7.permission；permit 8.concentrate；concentration 9.definite；definitely；definiation 10.independent；dependent；depend 11.frequently；frequent 12.disadvantage；advantage 13.shorten；short
Ⅱ.1.consist of 2.be known as 3.come up with
4．agree with 5.concentrate on 6.可以进入；可以使用 7.也；还 8.下降；下跌 9.故意地 10.与……比作……
Ⅲ.1.It 2.while 3.if 在预习中还有哪些问题需要你在听课时加以关注？请在下列表格中做个备忘吧！ 课堂合作探究 Section Ⅰ Introduction，Reading and Vocabulary
文本感知
Read the passage on P52 carefully and fill in the blanks. Paragraph Main idea Detailed information 1 What the Internet is. 1.______ in the world. ★DARPA created a network of computers called DARPANET in 1969. 2 2.______. ★NSF started the NSFNET network in 3.______. ★A（n） 5.______ that allows computer users to access information from millions of websites via the Internet. 3 What 4.______ is. ★At the moment，about 80% of web traffic is in English；by 2020，much web traffic could be 6.______. ★7.______ came up with the idea of the Who invented the World World Wide Web in 1989. 4 Wide Web？ ★He invented the World Wide Web in 8.______. ★He designed the first 9.“______”． BernersLee's another 5 ★Within five years，the number of 10.______ contribution. rose from 600 000 to 40 million. The influence of ★It has created thousands of 12.______. 6 11．______. ★Everyone can access the Internet. 答案：1．The biggest source of information 2.How the Internet started 3.1984 4.the World Wide Web 5.computer network 6.in Chinese 7.Tim BernersLee 8．1991 9.web browser 10.Internet users 11.the Internet 12.millionaires 导学互动
1．A CDROM is a separate disk that contains lots of information.（P51） 一个只读光盘存储器是一个可以容纳大量信息的单独的圆盘。 contain vt.包含；容纳；克制（不用于进行时态） There are four or five boxes containing toys and books. 有四五个盒子，里面装的是玩具和书籍。
The stadium is big enough to contain 100 thousand audience. 这个体育场足够大可以容纳十万人。
When we heard the joke，we were unable to contain our laughter. 我们听到这个笑话时，忍不住笑了。 词语辨析
contain与include
（1）contain通常用来指某种容器中盛有某物，装有某物；还指某种物质中含有某成分或含有其他物质。指作为组成部分而被“包含”或“容纳”在内。
（2）include通常表示把某事物作为其中的一部分包含在内。在句中常构成分词短语sth. included或including sth.。
The book contains twenty maps，including a map of China/a map of China included. 这本书中有20张地图，中国地图也包括在内。 （1）用contain和include的正确形式填空
①He was so excited that he could hardly ______ himself. ②Then in came five people，______ two foreigners. ③Do you know what the bottle ______？ （2）单项选择
This kind of fruit ______ a large amount of vitamin，______ vitamin C. A．includes；including B．takes；containing C．holds；included D．contains；including
2．The Internet is the biggest source of information in the world，and it's accessible through a computer.（P52，Para.1）
因特网是世界上最大的信息来源，通过电脑即可进入。 （1）source n．来源；出处；源头
Pleasure is a source of pain；pain is the source of pleasure. 苦中有乐，乐中有苦。
My wages are the only source of my income. 薪金是我收入的唯一来源。
We followed the river back to discover its source. 我们溯河而上，寻找其源头。
（2）accessible adj.可进入的；可到达的；易得到的；易使用的；易接近的 These newspapers should be put where they are easily accessible. 这些报纸应该放在容易被拿到的地方。 The teacher is accessible to his students. 这位老师很容易和学生亲近。 联想拓展
access n. 接近；通路；（使用）权利 vt.&vi. 获取；进入（某地） He is a man easy to access. 他是个容易接近的人。
have/get access to可以进入（接近）；可以使用
Twenty percent of the people on earth don't have access to clean drinking water. 地球上百分之二十的人喝不到干净的水。 access to接近……的机会；进入……的权利
be accessible to容易接近；容易进入
（1）根据中文提示完成句子，每空一词
①Work is the true ______（来源） of human welfare.
②Boys and girls should have equal ______ ______ ______（受教育权）． （2）单项选择
①It might be very difficult to find the ______ of the information. A．cause B．resource C．source D．course
②The people living in these apartments have free ______ to the swimming pool. A．time B．entrance C．charge D．access 3．It consists of millions of pages of data.（P52，Para.1） 它由几百万页的数据组成。
consist of 由……组成（无被动结构，不用于进行时态）
This article consists of four parts. 这篇文章包括四部分。
The area doesn't consist entirely of rich people. 这个地区不是只有富人。 联想拓展
consist in 在于……
Happiness consists in contentment.幸福在于知足。 consist with 与……相符
His conclusions do not consist with the facts. 他的结论与事实不符。
（1）单句改错
This club is consisted of more than 200 members.
________________________________________________________________________ （2）句型转换
How many players make up a football team?
①How many players ______ a football team ______ ______？
②How many players ______ a football team ______ ______ ______？ （3）单项选择
A team，______ two doctors and three policemen，was sent to search for the lost explorers. A．consisting of B．consist of C．consisted of D．to be consisted of
4．At the moment，about 80 percent of web traffic is in English，but this percentage is going down.（P52，Para.3）
现在，大约80%的网络都是用英语的，不过这个百分比正在下降。 go down 下降；记下
It seems that the price won't go down.
物价好像不会下跌。
This day will go down in history. 这一天将被记入史册。 联想拓展
go in for参加（考试、竞赛等）；从事；爱好 go off爆炸；响起
go up（价格、数量等）上升；（楼房）建造起来 go against违背
go through 经历；通过
单项选择
Mr .Smith，who was eightyfour years old，______ the Second World War and had a lot of adventures.
A．went on B．went for C．went against D．went through 答案：1．（1）①contain ②including ③contains
（2）D 提示：句意为：这种水果富含维生素，包括维生素C。contain意为“包含（某成分）”；include指某一事物是其中的一部分。
2．（1）①source ②access to education
（2）①C 提示：source意为“来源”，符合题意。cause意为“导致”；resource意为“资源”；course意为“课程”。句意为：可能很难找到信息的来源。
②D 提示：句意为：居住在这栋公寓的人们可免费进入游泳池。have access to “可以进入，可以使用”。
3．（1）is consisted→consists
（2）①does；consist of ②is；made up of
（3）A 提示：句意为：由两名医生和三名警察组成的一个团队被派去搜寻失踪的探险者们。consist of “由……组成”，无被动结构，故用consisting of 修饰 team。
4．D 提示：句意为：已经84岁的史密斯先生经历了二战，有很多的冒险故事。go on “继续”；go for“喜欢”；go against “违背”；go through“经历”。
提示：用最精炼的语言把你当堂掌握的核心知识的精华部分和基本技能的要领部分写下来并进行识记。
因篇幅问题不能全部显示，请点此查看更多更全内容