UNIT 3 Section Ⅰ Welcome to the unit & Reading(教用Word)-【优学精讲】2025-2026学年高中英语必修第三册（译林版）

Section Ⅰ　Welcome to the unit & Reading

The Internet： a world without frontiers①

　　[1]The Internet has the power to connect people across the world to a single shared community②.Billions③ of people in different parts of the world have joined it already， and obviously④ many more will follow.Even in the countryside， the Internet enables people to reach beyond their villages and get in touch with⑤ the outside world.[2]We can achieve almost anything online—with access⑥ to the Internet come some truly life-changing advantages.

　　One of the greatest advantages of the Internet lies in⑦ the quick and easy access to a huge amount of information.To a certain extent⑧， the world’s knowledge is all at our fingertips⑨.[3]With the click⑩ of a mouse or the touch of a button⑪， it is possible to find out⑫ almost anything we care to know， from recipes⑬ to travel packages， from military⑭ affairs⑮ to learning resources.In the time it takes to find one book in the library， we can use a search engine to bring up⑯ millions of results.[4] No wonder the Internet has now become the first place that the majority⑰ of people turn to for information.

　　[5]The Internet has also made our lives unbelievably convenient， with all sorts of goods⑱ and services provided by electronic commerce⑲， more commonly known as e-commerce.[6]You can have food delivered⑳ to you using food delivery apps and sites㉑.[7]Gone are the days of searching shop after shop for the perfect pair of boots—you can compare styles and prices quickly and easily in the comfort of your living room.Why wait hopelessly for a taxi in the cold rain？ It is now simple and fast to order one

with a taxi app.Sit back and relax indoors for a few warm minutes until the driver arrives.When you wish to go on holiday， you can make all your travel arrangements㉒ just in front of the computer.Forgot to carry cash㉓？There is no need to worry—you can pay for almost everything on your smartphone.

　　Above all else㉔， the Internet helps us establish㉕ and maintain social ties.With all sorts of communication software㉖， physical distance no longer gets in the way.[8]No matter where we are， we are able to keep in contact with loved ones， find long-lost friends and discover whole new communities who share our hobbies.An instant㉗ message， a group chat， a video call， a comment㉘ on an update—there are endless ways to share our views or let someone know we care about them.

　　[8]No matter where引导让步状语从句；主句中and连接了三个并列的谓语动词keep、 find和discover； who引导定语从句，修饰先行词whole new communities。

　　[9]However， while the Internet brings many valuable advantages， being connected has its problems. As with any great invention， we must be aware㉙ of these problems and be careful to use the Internet properly and responsibly.[10]Only in this way can the Internet be a place of discovery， wonder and inspiration for everyone. It is truly a world without frontiers.

①frontier n.国界，边界；尖端，边缘

②community n.社区；社会；团体；社团；界；共享；共有

a single shared community 一个共享群体

③billion num.十亿

billions of 数以亿计的；许多的；数十亿的

[联想]million num.一百万；许多；大量

millions of 数百万的

④obviously adv.显然，明显地

obvious adj.明显的

⑤get in touch/contact with

与……取得联系；和……接触

keep in touch/contact with与……保持联系

lose touch/contact with 与……失去联系

⑥access n.机会，权利；入径，通道 vt.到达，进入，使用

accessible adj.可接近的；可进入的；可使用的

⑦lie in （＝consist in） 存在于；位于

⑧extent n.程度，限度；范围

to a certain extent 在一定程度上

⑨at one’s fingertips 掌握（信息），熟悉、精通（知识等），了如指掌

⑩click n.点击，单击；咔哒声 vi.& vt.使发出咔哒声；点击，单击

⑪button n.按键；纽扣

⑫find out 找出；发现；查明；查出

⑬recipe n.食谱；方法，秘诀

⑭military adj.军事的，军队的

⑮affair n.公共事务，政治事务；事件，事情

military affairs 军事事务

⑯bring up 使显示在计算机屏幕上，调出；提出

bring down 降价；使倒下

⑰majority n.大部分，大多数；多数票

the majority of ... ……的大多数；大部分；多数