Unit 3知识点汇总（单词、短语、句型、语法、练习） 广东省广州2025-2026学年沪教版（2024）八年级英语上册

Unit 3  Our digital lives 我们的数字式生活

 

1. The important words, phrases and sentences

①　Experts didn’t believe that anybody wanted a computer at home.

专家不相信有人会想要放一台计算机在家里。

②　Smartphones—phones with computer software—arrived!

智能手机——带电脑软件的手机——出现了！

③　Today’s smartphones can connect to the internet and run all kinds of different apps—in other 

words, they are small computers.

如今的智能手机可以连接到互联网，并运行各种应用——换句话说它们就是小型电脑。

④　As more things become connected to the internet, our cities will become smart cities.

随着越来越多的东西接入互联网，我们的城市将成为智慧城市。

⑤　The internet has brought big changes to everyday life.

互联网已给日常生活带来了巨大变革。

⑥　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改变了我们学习和购物的方式。

⑦　Take health for example. We’ll probably wear small devices all the time, and they’ll check our

health and warn us about health problems.

以健康领域为例，我们可能会始终佩戴小型设备，它们会监测我们的健康状况，并就健康问题发出预警。

⑧　With this information, doctors can provide better treatment.

有了这些信息，医生就能提供更优质的治疗。

⑨　For example, smart rubbish bins will automatically tell the smart city network when they are

full.

例如，智能垃圾桶在装满时会自动向智慧城市网络发送信号。

⑩　This data will allow the rubbish collection company to plan better collection routes.

这些数据能让垃圾收集公司规划更优的收集路线。

⑪　Our roads will be much safer in the future, and traffic will flow more smoothly.

未来的道路会安全得多，交通流动也会更顺畅。

⑫　It is about 80 kilos in weight.

这东西重约80千克。

⑬　Do you use social media? How often do you check it per day?

你使用社交媒体吗？每天查看的频率是？

⑭　Do you usually send your friends messages, or do you talk more in person?

你经常给朋友发信息吗？还是说当面谈的时候更多？

⑮　Next week, I will be interviewing Jackie Chan about his latest movie.

下周我将采访成龙，请他谈论他的最新电影。

⑯　What are the positive and negative effects of the internet on their lives?

互联网对他们的生活产生的积极的和消极的影响有哪些？

⑰　Write a paragraph to express your opinion.

写一段来表达你的看法。

⑱　I love reading science fiction novels, and I post my book reviews online.

我喜欢阅读科幻小说，我会把书评发到网上。

⑲　Every time I write a review, I get hundreds of comments.

每次我写一个书评，会得到数百条评论。

⑳　This is the basis for all modern computers.

这是所有现代计算机的基础。

21　Ted Hoff was the main inventor of the microprocessor, or “microchip”.

特德霍夫是微处理器，即芯片的主要发明者。

22　This was a major breakthrough in the history of computers.

这是计算机历史上的一次重大突破。

23　Thanks to the microchip, computers and other electronic devices got faster and smaller very

quickly.

有了芯片，计算机和其他电子设备得以迅速提高运行速度和小型化。

24　A US company designed the first PC (personal computer) for the general public.

一家美国公司为公众设计出了第一台个人计算机。

25　The arrival of smartphones has started a new era in digital technology.

智能手机的到来给数码技术开启了一个新的时代。

26　Expressions such as “Wi-Fi”, “download” and “app” have become part of our daily lives.

“无线”“下载”以及“应用”等词汇已经成为我们日常生活的一部分。

27　Some computers will be tiny—perhaps we will even have computers in our clothes.

一些电脑将会变得非常微小——或许我们甚至会把电脑穿戴在衣服上。

 

2. Grammar

形容词的比较级和最高级

1)        概念

把两者进行比较，表示一个比另一个“更……”时，用比较级；对三者或以上进行比较，并表示其中一个“最……”时，用最高级

e.g.

The black suitcase is cheaper than the red one.

This model has the highest price of all the smart watches in this shop.

2)        变形规则

1. 单音节

比较级	最高级
大部分加-er，有-e则加-r	大部分加-est，有-e则加-st
闭音节，双写加-er	闭音节，双写加-est
辅+y，改-y为-i加-er	辅+y，改-y为-i加-est

e.g.

My computer can operate at a faster speed than yours.

The first computers were larger than cars.

It’s the world’s biggest internet technology company.

This is the heaviest snow we have had this winter.

2. 双音节

比较级	最高级
大部分加more	大多加most
少数加-er，有-e则加-r，辅+y的改-y为-i加-er	少数加-est，有-e则加-st，辅+y的改-y为-i加-est

e.g.

He is more famous as a singer than as an actor.

My sister is always a lot cleverer than I am.

This question is the simplest.