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2025-2026学年沪教版八年级上同步学案
Unit 3 Our digital lives
重点词汇&核心句式讲解
Our guest today is Dr Li, a technology expert. 今天我们的嘉宾是李博士，一位技术专家。（☆☆）
词义： expert / eksp t/ n. 专家
用法：
(1) 作名词，常与介词“on/in/at”搭配，表示“在……方面的专家”。如：an expert on history 一名历史专家
(2) 作形容词，意为“熟练的，内行的（指在某方面精通的）”。
例句：
(1) She is an expert in computer programming. 她是计算机编程方面的专家。
(2) He gave us some expert advice on growing flowers. 他给了我们一些种花的专业建议。
巩固： （单句填空） She is an intelligent e___________ in health care.
2. For example, e-learning and mobile payment have changed the way we study and shop. 例如，在线学习和移动支付已经改变了我们学习和购物的方式。（☆☆）
词义：（1） mobile / m ba l/ adj. 可移动的
（2） payment / pe m nt/ n. 付款；支付
用法：mobile payment 移动支付
例句：Mobile payment is very popular and common in China.
移动支付在中国非常流行且常见。
巩固： （翻译句子） 移动支付在我们的日常生活中扮演着重要的角色。
___________________________________________________________________________________________
3. In the future, even more things will be connected to the internet, so life will continue to change. 未来，甚至更多的东西将连接到互联网，所以生活将继续变化。（☆☆☆）
词义：be connected to … 被连接到……
例句：The computer is connected to the internet. 这台电脑联了网。
拓展：connect ... to/with ... 把……和……连接起来
例句：Please connect the computer with TV. 请把电脑和电视连接起来。
巩固：（完成句子） 这两个城市通过一条新铁路连接起来了。
The two cities ________________ each other by a new railway.
4. Take health for example. 以健康为例。（☆☆）
词义：take … for example 以……为例
用法：take＋名词/代词＋for example＝take＋名词/代词＋as an example，常置于句首或句中，用于引出例证。
例句：He is good at many sports. Take swimming for example， he won the first prize in the school competition. 他擅长多种运动。以游泳为例，他在学校比赛中获得了第一名。
拓展：example的一词多义
中文 示例 中文 示例
例子 a good example 一个好的例子 榜样；典范 set an example树立榜样
巩固： （单句填空） The teacher used a story as an e__________ to explain the idea.
5. … and they’ll check our health and warn us about health problems. ……它们会检查我们的健康状况并提醒我们有关健康的问题。（☆☆）
词义：warn /w n/ v. 提醒注意；警告
用法：
(1) warn sb. ________ sth. 提醒/警告某人某事
(2) warn sb. _________________ 警告某人不要做某事
例句：
(1) The teacher warned us about the strict exam rules. 老师告诫我们注意严格的考试规则。
(2) Parents often warn children not to talk to strangers.
父母常警告孩子不要和陌生人说话。
拓展：warn v. → ______________ n. 警告；预警
巩固：（翻译句子） 医生警告他不要吃太多甜食。
___________________________________________________________________________________________
6. With this information, doctors can provide better treatment. 有了这些信息，医生能提供更好的治疗（☆☆）
词义：treatment / tri tm nt/ n. 治疗；疗法
例句：The new treatment has helped many patients. 这种新疗
法帮助了很多病人。
拓展：
词性及中文 常用搭配 示例
v. 治疗 treat ＋ 疾病/伤痛 ＋ （with sth. ）， “（用……）治疗……” treat the terrible disease with special drugs 用特殊的药物来治疗这种严重的疾病
v. 对待 treat sb./sth. ＋ 副词/介词
短语，“……对待某人/某物” treat him kindly 友善地对待他
(1) treatment n. →treat v. 治疗
(2) treat的一词多义
巩固： （单句填空）
(1) The doctor t_____________ his fever with some medicine and he recovered in just two days.
(2) This disease needs long－term t_____________.
Different devices will communicate and share data with each other. 不同设备将相互通信并彼此共享数据。（☆☆☆）
词义：
(1) communicate with 和……交流
(2) share sth. with sb. 和某人分享某物
例句：
(1) It is necessary for him to communicate with his teammates. 对他来说，和他的队友交流很有必要。
(2) It is nice of him to share his ideas with his teammates. 他能和队友分享他的想法真好。
巩固：（翻译句子）
做决定前，我们应该和父母沟通我们的计划。
___________________________________________________________________________________________
(2) 我们应该与父母分享我们的校园生活。
___________________________________________________________________________________________
8. This data will allow the rubbish collection company to plan better collection routes. 这些数据将允许垃圾收集公司更好地规划收集路线。（☆☆）
词义：
(1) data / de t / n. 数据
(2) company / k mp ni/ n. 公司
例句：The scientists of the company collected a lot of data for their research. 这个公司的科学家们为他们的研究收集了大量数据。
巩固：(1) （单句填空） It was created by a technology c_____________ which is called Smart Machines.
(2) （翻译句子） 数据显示，移动支付极大地改变了人们的生活方式。
___________________________________________________________________________________________
9. Our roads will be much safer in the future, and traffic will flow more smoothly. 我们的道路在未来将更加安全，交通将更加顺畅。（☆☆☆）
词义：
(1) traffic / tr f k/ n. 交通
(2) smoothly / smu li/ adv. 平稳地；连续而流畅地
用法：
(1) traffic lights 交通信号灯； traffic jams 交通堵塞； traffic______________ 交通事故
(2) smoothly 作副词，意为 “顺利地；平稳地；流畅地”，主要用来描述动作、过程或状态进行得没有阻碍、平稳自然。
例句：
(1) The traffic in the city is always busy. 城市里的交通总是很繁忙。
(2) Our trip went smoothly because we planned it well. 因为计划得好，我们的旅行进展顺利。
巩固：（翻译句子）
(1) 这条街的交通是如此繁忙，以至于经常会发生交通事故。
___________________________________________________________________________________________
(2) 在老师们的帮助下，这个项目进展顺利。
___________________________________________________________________________________________
10. With this data, traffic lights can change the timing according to the number of cars on the road. 有了这些数据，交通灯可以根据道路上汽车的数量来调整时间。（☆☆☆）
词义：the number of … ……的数量
用法：the number of ＋ 可数名词复数，作主语时，谓语动词用_________形式。
例句：The number of the students in our class is 40. 我们班学生的数量是40。
辨析：the number of …与a number of …
词组 中文 意义 作主语时的谓语动词形式
the number of ＋可数名词复数 ……的数量 强调具体数量
（表特指） 单数
a number of ＋可数名词复数 许多的……；大量的…… 强调数量多（表泛指） 复数
巩固：
(1) （单句填空） The number of the books on the shelf __________ 40.
(2) （单句填空） A number of students __________ playing on the playground.
(3) （翻译句子） 公司里的人数在增加。
___________________________________________________________________________________________
基础过关
一、根据要求写出相应的单词。
1. specialist→（同义词）________________ 2. warn→（名词） ________________ 3. treatment→（动词）________________ 4. flow→（形容词）________________
5. weight→（动词）________________ 6. company→（复数）________________ 7. negative→（副词）________________ 8. digital→（副词）________________
9. social→（副词）________________ 10. interviewer→（动词）________________
二、根据句意及首字母提示写单词。
1. She always has a p_________ attitude, even when facing difficulties.
2. My teacher wrote “Good job!” as a c_________ on my test paper.
3. Jenny use her m_________ phone to call her mum after school.
4. My school bag is too heavy—the w_________ hurts my shoulders.
5. Tom is very s_________ and loves talking with classmates.
6. Trust is the b_________ of a good friendship.
7. The heavy rain caused a f_________ in our town last summer.
8. Scientists are studying the e_________ of climate change on wildlife habitats around the world.
9. After months of t_________, his injured leg finally recovered and he could walk normally again.
10. With the coach’s guidance, she learnt to drive the car s_________ and passed the road test easily.
三、根据课文Reading， 完成语篇填词。
　　Dr Li, a technology expert, says the internet has changed people’s lives a lot—e－learning and mobile 1. p__________ have changed how we study and shop. In the future, more things will be 2. c__________ to the internet, bringing more changes. For example, people may wear small devices to check their health and 3. w__________ them of problems. This helps doctors treat them better. Smart cities will also help protect the environment by saving energy. Devices like smart bins will
share data for better planning. Roads will become 4. s__________ than before too. Cars will drive themselves and send data to traffic lights, helping traffic flow more 5. s__________.
Dr Li believes these changes are already starting to happen.
能力提升
四、完形填空。
We are always busy talking about and using the internet. But how many of us know the__1__ of the internet Many people are surprised when they know that the internet was set up in the 1960s. At that time, computers were large and puter networks (网络) didn’t work well. If a computer in the network __3__, the whole network stopped. So a new network system (系统) needed to be set up.
It should be good enough to be used by many different computers. If part of the network didn’t work, information could be sent through another part. In this way, the computer network system would keep on working all the time. Scientists tried to test every connection __4__ to make sure the network would work.
At first, the internet was only used by the government. This new technology was mainly used to send secret __5__. In the early 1970s, universities, hospitals and banks were __6__ to use it too. However， computers were still very expensive and the internet was __7__ to use.
At the start of the 1990s, computers became cheaper and easier to use. Scientists also __8__ software that made surfing the internet easier. Simple websites __9__, making information easier to find.
Today it is easy to get online and millions of people use the internet every day. The __10__ has now become one of the most important parts of people’s lives.
( ) 1. A. history B. price C. company D. inventor
( ) 2. A. good B. interesting C. expensive D. beautiful
( ) 3. A. died out B. broke down C. dried up D. went out
( ) 4. A. loudly B. truly C. slowly D. carefully
( ) 5. A. tools B. numbers C. messages D. novels
( ) 6. A. made B. sold C. provided D. allowed
( ) 7. A. easy B. difficult C. familiar D. fresh
( ) 8. A. found B. realized C. invented D. copied
( ) 9. A. appeared B. finished C. organized D. connected
( ) 10. A. TV B. internet C. smartphone D. car
五、阅读填空。
The internet is very important in our life. It gives us lots of information. But sometimes students may misuse (滥用) it and it can be very dangerous. __1___________.
Personal safety on the internet
Students must know the importance of keeping their personal details as secret. __2___________ They mustn’t tell others on the internet where they live, what job their parents do and which school they are in.
Information on the internet
Not everything on the internet is believable. Students and their families should discuss how to identify acceptable websites (鉴定可接受的网站) and what to do if they enter a wrong website. Students should know different kinds of advertisements on the internet. __3___________ They need to know which information is able to share with others online, and which should never be shared.
People on the internet
__4___________ And they should only make friends with people who honestly treat them. Also, they should know who is the right person to ask for help when they meet problems.
Last but not least, students should use the internet wisely and not spend too much time doing useless things on it. __5___________
A. They mustn’t give out their personal information.
B. So students must learn how to use the internet safely.
C. Similarly, students should learn to identify online friends.
D. And they should understand not all websites give true information.
E. They should look for educational things on the internet, but not play games for long.
参考答案：
expert
Mobile payment plays an important role in our daily life.
are connected to　
example
about; not to do sth.; warning; The doctor warns him not to eat too many sweets.
treated; treatment
(1) We should communicate with our parents about oure plans before making a decision.
We should share our school life with our parents.
(1) company
(2) The data shows that mobile payment greatly changes people’s way of life.
9. accidents; The traffic of the street is so busy that traffic accidents often happen.
With the help of the teachers, this project went smoothly.
10. 单数; is; are; The number of people in the company is increasing.
基础过关
一、
expert 2. warning 3. treat 4. flowing 5. weigh
companies 7. negatively 8. digitally　 9. socially 10. interview　
二、
positive 2. comment 3. mobile 4. weight 5. social
6. basis 7. flood 8. effects 9. treatment 10. smootly
三、
payment 2. connected 3. warn 4. safer 5. smoothly
ACBDC DBCAB
BADCE

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