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(共29张PPT)
Unit 5
Great inventions
Lesson 3 Computers and the internet
学习目标
能够掌握本课时单词、短语和句型。
能够读懂文章，了解电脑与互联网如何改变学习方式。
能够掌握一般过去式的被动语态。
新课讲授
New words
widely /'wa dli/ adv. 广泛地；普遍地
tool /tu l/ n. 工具；方法
spell /spel/ v. 拼写；拼成
print /pr nt/ v. 印刷；打印；发表
dictionary /'d k nri/ n. 词典；字典
simply /'s mpli/ adv. 简单地；仅仅
AI / e 'a / abbr.（=artificial intelligence）人工智能
definition / def 'n n/ n. 释义；解释
application / pl 'ke n/ n.（=app）应用程序；应用；申请；请求
1 What do you like to do on the computer Tick and talk with your partner.
□ Take an online course. □ Chat with friends. □ Send or receive emails. □ Do homework search. other：_____________________
√
Listen to music.
Tick and talk
Reading
Jenny wants to do her homework on the computer. But her mum is using it.
Jenny: Mum, is it okay if I use the computer now
Mum: Okay. I just finished my work, so it's all yours. Jenny, you're so lucky to have a computer.
Jenny: Yes, I am. As it's connected to the internet, it has made study and research much easier.
Mum: This technology helps students a lot with their homework. But when I was a student, computers were not widely used. And the internet was not as convenient as it is now. I couldn't imagine having such a convenient tool for getting the job done.
Jenny: Mum, how was homework done in those days
Mum: Well, everything was written by hand on paper. When I didn't know how to spell a word, I had to look it up in a printed dictionary. When I needed to do any research, I had to go to the library.
Jenny: But now with the internet we can simply search for everything online. And there's always new technology, like AI.
Mum: Yes, and you can easily find definitions and examples for any word. The internet and the computer are amazing inventions with many applications.
Jenny: I agree with you on that, Mum.
Read the conversation and answer the questions.
A What does Jenny want to do on the computer
B How did Jenny's mum do homework when she was a student
Jenny wants to do her homework on the computer.
Everything was written by hand on paper. When she didn’t know
how to spell a word, she had to look it up in a printed dictionary.
When she needed to do any research, she had to go to the library.
In the past
(Mum's schooldays)
At present
(Jenny's schooldays)
Differences
Everything ______ ______ ______ hand on paper.
She looked up the new word in ______ ______ ________.
She had to ______ ______ ______ ______ to do research.
Jenny wants to do her homework
______ ______ ________.
Jenny can search for everything ______, and can easily find ______ ______ ________ for any word.
There's always ______ __________ like AI.
was written by
go to the
a printed dictionary
on the computer
online
definitions
new technology
library
and examples
1. Computers were not _____ ______.
2)The internet was not _____ ________ ____
it is now.
1. The technology
helps students a lot with _____ __________.
2The internet and the computer are ___________ ___________
with many ___________.
widely
as
their
amazing
inventions
applications
used
convenient as
homework
Read the conversation again and complete the mind map.
Language points
1. As it's connected to the internet, it has made study and research much easier. 由于它连接了互联网，这让学习和研究变得容易多了。
be connected to 表示“与……相连”，一般指物理上的连接(如设备、地点) ，be connected with 指抽象意义上的关联(如概念、事物关系) 。
connect 的常用短语：
(1) connect sth. to... 把某物连接到……上
(2) connect sb. with sb./sth. 使某人与某人/ 物有联系
(3) connect... and... 使……与……连接
e.g. The printer is connected to the computer via a USB cable.
打印机通过 USB 线与电脑相连。(物理连接)
Her research is closely connected with environmental protection.
她的研究与环境保护密切相关。(抽象关联)
The village is connected to the city by a new highway.
一条新公路将村庄与城市连接起来。(交通连接)
Everything you do is connected with the goals you set.
你做的每件事都与你设定的目标相关。(逻辑关联)
English connects us with the world.
英语把我们和世界联系起来。
分析结构: 这是一个主从复合句。其中从句是由when引导的时间状语从句，I 是主语，was 是系动词，a student 是表语。computers were not widely used 是主句，其中computers 是主语，谓语were not used 是被动语态，widely 是状语表示程度。
2. But when I was a student, computers were not widely used.
但当我是一名学生的时候，电脑还没有被广泛应用。
e.g. When I was young, I loved reading.
当我年轻时，我喜欢读书。
When I was a student, smartphones had not been invented.
当我是学生时，智能手机尚未被发明。
连词when 引导的时间状语从句，从句在前，主句在后。主句是主语 + 谓语，谓语用了被动语态。从句用一般过去时，主句用过去时的被动语态，表示过去某段时间内的状态。
widely 作副词，意为“广泛地；普遍地”，修饰动词，强调范围广或程度深。还可以表示“大大地；很大程度上”，强调程度差异。
常见搭配：widely known 广为人知的 widely accepted 普遍接受的
widely used 广泛使用的
相关词汇：wide adj. 宽的；广阔的 width n. 宽度；广度
e.g. The new technology is widely used in industry.
这项新技术在工业领域被广泛应用。
The two brothers are widely different in personality.
这兄弟俩的性格差异很大。
It’s too wide. We can’t swim across it.
这太宽了，我们游不过去。
imagine doing sth. 想象做某事
3. I couldn't imagine having such a convenient tool for getting the job done.
e.g. Can you imagine living without electricity
你能想象没有电的生活吗？
4. When I didn't know how to spell a word, I had to look it up in a printed dictionary. 当我不知道一个单词怎么拼写的时候，我就得去查印刷版词典。
长难句分析：这是一个复合句。主句主语是I，had to后跟动词原形；look up表示“查阅”，是动词+副词型短语，代词作宾语要放在中间；in a printed dictionary是介词短语作状语。从句是由When引导的时间状语从句，其中how to spell a word是特殊疑问词+动词不定式结构作know的宾语。
print 作动词，意为“印刷；打印；发表”。print out 打印出
还可以作名词，意为“印刷字体；印刷品；指纹”。
相关词汇：printer n. 印刷工人；打印机
printing n. 印刷术；印刷 printed adj. 印刷的；打印的
e.g. I need to print the report before the meeting.
我需要在会议前把报告打印出来。
This company prints 50,000 newspapers every day.
这家公司每天印刷 5 万份报纸。
Her story was printed in the local newspaper.
她的故事被刊登在当地报纸上。
Please write your name in bold print.
请用加粗字体写下你的名字。
5. The internet and the computer are amazing inventions with many applications. 互联网和电脑是了不起的发明，有着诸多应用程序。
application n. 意为“应用”时，为不可数名词。还可意为“应用程序；申请；申请书”，为可数名词。
常见搭配：application of + 理论 / 方法 ……的应用
make an application (to sb.) for sth.(向某人) 申请某物
submit an application 提交申请
相关词：apply v. 应用；申请 apply for...申请……
apply... to... 把……应用到…… applicable adj. 适用的
be applicable to 适用于……
e.g. The application of new technology has changed our lives.
新技术的应用改变了我们的生活。
I downloaded a useful language learning application.
我下载了一个有用的语言学习应用。
He made an application to the school for a scholarship.
他向学校申请了奖学金。
The new technology was applied to farming.
这项新技术已应用于农业。
6. I agree with you on that, Mum.
agree with 与……一致
说明与某人在某个观点上达成一致
e.g. I agree with your opinion.
我同意你的观点。
3 Read the sentences, pay attention to the parts in yellow.
But when I was a student, computers were not widely used.
Everything was written by hand on paper.
When we use the passive voice to say a past thing, we use was/were.
Grammar focus
一般过去时的被动语态的构成是“was/ were+及物动词的过去分词”。
一般过去时的被动语态
肯定句：主语+ was/were + 过去分词(+ by + 宾语) .
e.g. A new school was built in our town last year.
去年我们镇上建了一所新学校。
否定句：主语+ was/were + not + 过去分词(+ by + 宾语) .
e.g. The problem wasn’t solved by him yesterday.
这个问题昨天没被他解决。
一般疑问句及回答：Was/Were + 主语 + 过去分词(+ by + 宾语)
肯定回答：Yes, 主语+ was/were.
否定回答：No, 主语+ wasn’t/weren’t.
e.g. —Were you invited to the party last night
你昨晚被邀请参加派对了吗？
—Yes, I was./No, I wasn’t.
是的，我被邀请了。/不，我没有被邀请。
特殊疑问句：疑问词 + was/were + 主语 + 过去分词
e.g. When was the computer invented
电脑是什么时候发明的？
表示过去的时间词：yesterday(昨天) , last week/month/year (上周 / 上个月 / 去年) , ago(以前) , in + 过去年份(如 in 2010) , the other day(前几天) 等。
e.g. The museum was opened two years ago.
博物馆两年前开放了。
These photos were taken last summer.
这些照片是去年夏天拍的。
Yesterday, I found an old book. It was on the top of the shelf. It __________ (cover) by some newspapers. The book __________ (write) by a famous writer. I opened the book and soon I __________ (attract) by a photo in it. It was a photo of my grandfather. Now, many photos __________ (take) on mobile phones. Looking at the old photo, I __________ (bring) back to the time I spent with my kind grandfather during my childhood.
was covered
was written
was attracted
are taken
was brought
3 Complete the passage.
Practice
A. How does it help you
B. It’s important for us to tell the good from the bad.
C. I think the world was changed by the internet.
D. The internet is a bridge between us.
4 Read and complete the conversation.
Mr Green: What do you think of the internet
Jenny: _______
Danny: I agree with you. Some of the advantages are indeed wonderful.
Mr Green: You’re all right. The internet is used everywhere. _______
Jenny: I like to find information about sports and technology.
Danny: I like chatting with my friends online. _______
Brian: I like doing research for my homework. There is so much information. _______
Mr Green: Exactly, the internet helps us a lot, but it also has many disadvantages...
C
A
D
B
Thinking:
What do you think are the disadvantages of the internet
It may leak our personal information and put us at risk. And spending too much time online can make us addicted and harm our health.
当堂检测
1. When Tony _______ why he was late for school, he just kept silent.
A. asks B. was asked C. will be asked
2. China’s Beijing Library _______ “Public Library of the Year” in 2024.
A. named B. was named C. will be named
3. In April, some planarians (涡虫) _______ into China’s space station for scientific research.
A. were taken B. took C. were taking
4. —It’s a pity! A music fan like you didn’t go to Nantong Music Festival.
—I knew it _______ several weeks ago. But I was on business.
A. is held B. will be held C. was held D. held
5. —I hear that Jingdezhen Porcelain (瓷器) _______ in Paris last month.
—Wow! Good news.
A. shows B. has shown C. is shown D. was shown
单项选择
B
B
A
C
D
Homework
Review the grammar we learnt today.
Preview Unit 5 Lesson 4.

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