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(共27张PPT)
Lesson 3 Computers and the internet
Unit 5
Great inventions
学习目标
1
2
3
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。
Lead in
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：_____________________
新课讲授
Tick and talk
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.
Reading
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.
Homework was written by hand on paper.
Fill in the blanks.
Now, we're so lucky to have a computer. As it's __________ to the internet, it has made study and research much ________.This technology helps students a lot with their homework. But when our parents were students, computers _______ _______ widely _______. Everything ______ ________ by hand on paper. But now with the internet we can _________ search for everything online. And there's always new technology, like AI. You can easily find _________ and examples for any word.
connected
easier
were not used
was written
simply
definitions
Grammar focus
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.
一般过去时的被动语态由“主语 + was/were + 过去分词 (+ by+宾语 ) ”构成。
一般过去时的被动语态
一、结构
分类 句式结构
肯定句 主语+ was/were + 过去分词(+ by + 宾语) .
否定句 主语 + was/were + not + 过去分词(+ by + 宾语) .
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.
特殊疑问句 疑问词 + was/were + 主语 + 过去分词
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。
The problem wasn’t solved by him yesterday.
这个问题昨天没被他解决。
Were you invited to the party last night
你昨晚被邀请参加派对了吗？
When was the computer invented
电脑是什么时候发明的？
考点2 时间标志词
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
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.
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
e.g. The Spring Festival is connected with many traditions and customs.
春节与许多传统和习俗相关联。
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 与......相连
e.g. The hotel was connected to the station by a walkway.
一条人行通道把旅馆和车站连接起来。
拓展(1) be connected with与……有关联
e.g. This corridor connects with the living room. 这条走廊与客厅相连。
The fast Wi-Fi on China's space station helps astronauts connect with people on Earth easily. 中国空间站上的高速 Wi-Fi帮助航天员与地球上的人们轻松建立联系。
(2) connect [动词] 关联；连接
不及物动词connect to/with...与……连接；与……联系起来
及物动词 connect... with/to/and...把······与······连接/联系起来
e.g. It's a wide river. 这是一条宽阔的河流。
The bridge is 30 metres in width. 这座桥宽30米。
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。
widely /'wa dli/ adv. 广泛地；普遍地讲
由“wide（adj.宽的；广泛的）+-ly（副词后缀）”构成。
e.g. It is widely known that he is good at speaking in public.
众所周知，他擅长在公共场合发言。
BDS has been widely used as public resources in our daily life. 北斗卫星导航系统作为公共资源已被广泛应用于我们的日常生活中。
拓展：wide adj. 宽的；广泛的 width n.宽度；广度
e.g. Use apps or online tools to practice spelling and grammar.
使用应用程序或在线工具来练习拼写和语法。
3. 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。
spell /spel/ v. 拼写；拼成 过去式和过去分词形式均为spelt
常用于“How do you spell... ”句型，用于询问如何拼写某个单词或某人的名字。
e.g. How do you spell“notebook” 你怎么拼写“notebook”
B-O-O-K spells‘book’. B-O-O-K 拼成book (书)。
拓展 spelling[名词]拼写；拼法
look up （在词典、参考书中或通过电脑）查阅；抬头看
(1)此处意为“查阅”，可接名词或代词作宾语。宾语如果为人称代词，要放在look和up之间；如果是名词，放在look和up之间或up之后均可。
e.g. He looked up a number in his phone.
=He looked a number up in his phone.他在手机里查了一个号码。
Can you look it up on the website
你能在网站上查一下它吗？（只能放在look与up之间）
(2)意为“抬头看”，常和from连用。
e.g. She looked up from her book as I entered the room.
我进房间时，她从书本上抬起头来看了看。
look的常见短语还有：
look forward to盼望 look out小心
look after照顾 look for寻找
look around环顾 look like看起来像
look through快速查看；浏览 look over 查看；检查
print /pr nt/ v. 印刷；打印；发表
printing n. 印刷
printer n. 打印机；印刷工人
e.g. I need to make a few changes before I print the document.
打印文件之前我要做些修改。
The fifteenth century saw big progress in printing technology in the West. 十五世纪，西方的印刷工艺有了很大的进步。
Our company has just bought a colour printer.
我们公司刚买了一台彩色打印机。
e.g. The machine is very simple to use.
这台机器操作非常简单。
4. But now with the internet we can simply search for everything online. 但现在有了互联网，我们只要在网上搜索就能找到所有信息。
simply /'s mpli/ adv. 简单地；仅仅
e.g. The book explains grammar simply and clearly.
这本书对语法解释得简明扼要。
simple [形容词] 简单的；容易的
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 / pl ke n/ n. (= app)应用程序；应用；申请；请求
e.g. We have received applications from more than 3,000 students.
我们已经收到超过3 000名学生的申请。
拓展apply作动词，常见含义及用法如下：① 应用
e.g. These ideas are often difficult to apply in practice.
这些想法往往很难付诸实践。
e.g. Apply sunscreen with SPF 30 or higher 20–30 minutes before going outside. 在出门前20到30分钟，涂抹防晒系数30或更高的防晒霜。
② 申请，请求
apply for申请：
e.g. She applied for a job with the local newspaper.
她申请了当地报社的一份工作。
③ 涂，敷
当堂检测
单项选择
1. The windows ________ by Tom yesterday.
A. is broken B. broke C. were broken D. breaks
2. A sports meeting ________ in our school last month.
A. holds B. held C. is held D. was held
3. —Why ________ you ________ to the class meeting yesterday
—Because I was ill and had to rest at home.
A. didn’t; invite B. weren’t; invited
C. didn’t; invited D. wasn’t; invited
C
D
B
4. The old house ________ in 1990.
A. was built B. is built C. will be built D. builds
5. The sports meeting ________ because of the heavy rain, but the students ________ a wonderful indoor activity instead.
A. was not held; were given B. didn’t hold; gave
C. was not held; gave D. didn’t hold; was given
6. Many trees ________ on the hill last spring.
A. planted B. were planted C. are planted D. plant
A
A
B
Homework
用合适的语言描述电脑和互联网带给我们的生活方式的改变，并思考电脑/互联网的利弊”与同伴进行讨论与续写对话，清晰表达自己的看法。
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