这个单元有 5 章：主题课文"我爸妈第一次用智能手机"、词汇延展（科技/通讯/社交媒体词族）、语法延展（被动语态入门：现在时/过去时/情态 + be done）、功能句型（谈技术、写 Email）、PET 考点与自测 + 下一站 FCE。
学完你能：用 80+ 科技与通讯词聊"手机/邮件/AI/社交平台"；把主动句改成被动句；在 PET 写作 Part 1 Email 里写一封"建议家人用科技"的 100 词短信；口语 Part 4 回答"科技对年轻人的影响"。
预计时间：1 周。
衔接说明：这是 PET 的收官单元。被动语态是 B1 语法的最后一块拼图，也是 FCE（B2 First）的重点——U8 学完，PET 的语法体系就完整了，第 5 章末尾告诉你下一站怎么走。
Technology & Communication = 科技/通讯词族 + 被动语态 + 技术讨论句型。课文带你看 16 岁的 Leo 教爸妈用智能手机，词汇按"设备/沟通方式/社交媒体/AI 与网络"分组，语法把"被…"一次讲透。
主题课文 · 我爸妈的第一部智能手机
课文 · A Screen for Mum and Dad
课文精讲 · B1 版"被字句"四步
论从"我妈用手机"到"手机被我妈用来发照片"
KET 版：Mum uses a phone. Dad sends photos. Grandma is happy.——全是主动句，谁做什么一目了然。
PET 版：① 不知道/不必说谁做（The phone was kept in a drawer）；② 强调动作承受者（Everything is read on the phone）；③ 客观/正式语体（Digital skills should be taught）；④ 带情态的被动（It can be done in five minutes）。
考试怎么考：PET 阅读 Part 5 完形最爱挖被动；写作 Part 2 用一两个被动句立刻显得"正式"。口语 Part 4 谈科技时，被动句让你听起来更客观、更像 B1。
① download an app 下载应用（download / upload 区分）
② forward a message 转发消息
③ pay bills online 在线付账
④ digital skills 数字技能
⑤ be confused 感到困惑（形容词化的被动）
词汇延展 · 科技、通讯与社交媒体词族
四组词族 · 设备、动作、社交、网络
（可参看「科技社交词族」深化页）| 组 | 核心词 | 搭配/备注 |
|---|---|---|
| 设备 | smartphone, mobile phone, laptop, tablet, desktop, keyboard, screen, charger, headset, printer, camera, battery, Wi-Fi, signal | mobile phone（英式）= cellphone（美式） |
| 沟通动作 | call, text, message, email, chat, video call, forward, share, post, upload, download, tag, like, comment, delete, save | text = 发短信（动词） |
| 社交媒体 | social media, app, profile, feed, follower, timeline, hashtag, viral, influencer, privacy, settings, notification | social media 不可数总称 |
| 网络与 AI | internet, website, search engine, online, offline, data, password, account, AI, robot, algorithm, click, stream, download | go online / be online |
① download vs upload：download = 下载到本机；upload = 上传到网络。别反。
② email 可数 vs 不可数：I sent an email（可数，一封邮件）；Email is fast（不可数，邮件系统）。
③ social media 不可数：Social media is everywhere.（不加 s）
④ phone 动词：Call me / Phone me / Text me 都对；口语 phone sb. 比 ring sb. 更正式。
语法延展 · 被动语态入门
被动语态的"四步变形法"
| 步骤 | 说明 + 例子 |
|---|---|
| ① 找宾语 | The neighbours told my dad... → 宾语 my dad |
| ② 宾语挪到主语位 | My dad ______ |
| ③ 动词变 be + done（时态跟着原句走） | 原句过去时 → was told：My dad was told... |
| ④ 原主语用 by + 宾格（可省） | ...by the neighbours.（不知道/不必说时省略） |
三类被动对照表
（可参看「过去/情态被动」深化页）| 类型 | 结构 | 例子 |
|---|---|---|
| 一般现在时被动 | am/is/are + done | The phone is used every day. / Messages are written by bots. |
| 一般过去时被动 | was/were + done | The phone was kept in a drawer. / A message was forwarded to us. |
| 情态动词被动 | modal + be + done | It can be done in five minutes. / Digital skills should be taught at school. |
| 否定被动 | be/modal + not + done | It wasn't kept on the table. / You shouldn't be fooled by fake news. |
| 疑问被动 | Be/Modal + 主语 + done? | Was it made in China? / Can it be done online? |
① be 随时态/人称变：The phone is made. / The phones are made. / It was made.（be 不能忘）
② 过去分词不是过去式：主动 wrote；被动 written（be written）。不规则分词要背：make-made, send-sent, give-given, write-written.
③ 什么时候用被动：不知道谁做的（My bike was stolen）；不必说谁做的（Rice is grown in China）；强调承受者（The murderer was arrested）。
④ 什么时候不用被动：动词不及物（happen / arrive / sleep）没有被动；自己发出的动作用主动。
⑤ 考试怎么考：PET 阅读 Part 5 完形最爱挖 be + 过去分词空。看到主语是"被怎么"的对象，立刻找 be + done。
常见不规则过去分词（B1 必背）
| 原形 | 过去式 | 过去分词 | 被动例子 |
|---|---|---|---|
| make | made | made | The phone is made in China. |
| send | sent | sent | The email was sent yesterday. |
| give | gave | given | A present was given to me. |
| write | wrote | written | The message is written by a bot. |
| steal | stole | stolen | My bike was stolen last week. |
| design | designed | designed | The app was designed for kids. |
情景操练
即学即用
练习1（改被动）：① Someone stole my phone. → My phone ________. ② People speak English all over the world. → English ________ all over the world. ③ You should finish the report today. → The report should ________ today. ④ The company will launch a new app. → A new app will ________.
练习2（be 动词选择）：The emails ___ (is/are/was) sent yesterday. / The app ___ (is/are/was) designed for children.
练习3（改错）：① The phone was buy by my dad. ② English speaks here. ③ It can be do in five minutes.
练习4（写自己的话）：用被动写两句：一句谈你的手机/电脑是哪里造的，一句谈一件你被送给过的东西。
查看参考答案
- 练习1：① My phone was stolen. ② English is spoken all over the world. ③ The report should be finished today. ④ A new app will be launched.
- 练习2：The emails were sent yesterday. / The app is designed for children.
- 练习3：① The phone was bought by my dad（buy→bought） ② English is spoken here. ③ It can be done in five minutes.
- 练习4（示范）：My laptop was made in China. A smartphone was given to me by my grandma last year.
功能句型 · 谈科技与沟通
三套句型模板
This app is used for booking taxis.
The phone was designed for older users.
Messages are sent in seconds.
Smartphones have changed how we communicate.
Some people are addicted to social media.
Technology should be used wisely.
First, download the app from the app store.
Then, your phone number must be entered.
Finally, the code is sent by text.
场景对话 · 祖孙谈手机
Leo: You just tap this icon, Grandma. The message is sent automatically.
Grandma: And why is this video playing by itself?
Leo: That's called autoplay. It can be turned off in the settings.
Grandma: I never knew so many buttons were hidden inside one screen.
Leo: Don't worry. Everything is designed to be simple once you know where to look.
Grandma: And Leo, is my photo really seen by hundreds of people?
Leo: Only if you share it publicly, Grandma. If you send it to me privately, no one else will see it.
Email 骨架 · 描述一次用科技的经历
论100 词 Email 三段式（经历类）
开头（20 词）：Hi Tom, you'll never guess what happened last week — my parents finally got smartphones!（悬念开场）
中间（60 词）：三条——① The phone was kept...（被动）；② Then an app was downloaded...（被动）；③ Now they use it for...（主动收尾）。
结尾（20 词）：Write soon and tell me if your parents use phones much! Best, Leo.
考试怎么考：PET 写作 Part 1 经历类 Email 是高频题型；一两个被动句立刻让语体"升档"，考官一眼看到。
PET 考点 · Technology & Communication 怎么考 + 自测 + 下一站 FCE
考点分布表
| 卷子/题型 | 题型示例 | 应对策略 |
|---|---|---|
| Reading Part 3 | 人物与工具/沟通方式配对 | 抓动词 + 设备词 |
| Reading Part 5 | 完形：被动语态 be + done | 找主语是"被怎么"的对象 |
| Writing Part 1 | Email 100 词：描述用科技的经历 | 一两个被动句升语体 |
| Listening Part 2 | 听对话填设备/操作步骤 | 抓 download / send / settings |
| Speaking Part 4 | 讨论"科技对年轻人的影响" | 被动 + 表态 + 例子 |
本单元自测 · 8 题
PET Technology 自测
1（改被动）：Someone stole my bike. → My bike ________.
2（选择）：The email ___ yesterday. A. is sent B. was sent C. sent
3（情态被动）：This report must ___ (finish) by Friday.
4（改错）：The phone was buy in a shop.
5（阅读判断）："The phone was kept in a drawer for the first week." —— The phone was used every day. A. Right B. Wrong C. Doesn't say
6（听力）：听到 "The code is sent by text to your phone." —— 验证码是怎么收到的？
7（写作）：用被动写一句："这款应用是为学生设计的。"
8（口语）：用三句话回答：Do you think smartphones are good for young people?
查看参考答案
- 1：My bike was stolen.
- 2：B（yesterday = 过去时被动 was sent）
- 3：must be finished
- 4：The phone was bought（buy → bought）
- 5：B（放在抽屉里=没在用，与"每天用"相反）
- 6：以短信形式发到手机（by text）
- 7（示范）：This app is designed for students.
- 8（示范）：I think smartphones are useful, but they should be used wisely. Too much time online is wasted by young people. If phones were used for learning, they would be a great tool.
下一站 · FCE（B2 First）
论PET 收官：你已经走完了 B1 的全部语法与话题
PET 语法地图回顾：U1-U4 打基础（现在/过去/将来时、比较、频度、现在完成时）；U5 将来时双雄；U6 情态家族；U7 条件句；U8 被动语态。这就是 B1 语法的全部天花板。
FCE（B2 First）会加什么：① 完成时被动（has been done）、将来时被动（will be done）、情态被动的语体功能；② 第三条件句（If + had done, would have done）谈过去虚拟；③ 关系从句、分词短语、间接引语；④ 写作从 100 词 Email 升级到"文章/报告/评论"200 词。
词汇量要求：PET 约 2500 词；FCE 约 4000-5000 词。你现在背的每个词族，到 FCE 都要再加一层抽象搭配（如 put off / come up with 这类短语动词）。
现在就做：把 PET 八单元的错题集中过一遍，然后打开 FCE（B2 First）总览页，看看 B2 的四模块长什么样——下一站，从这里出发。
在线学习资源 · 剑桥官方
- 剑桥 Preliminary (PET) 官方考试页（内含免费样题/真题下载）
- Cambridge English 免费学习资源
点进官方考试页可下载免费样题；本课程课文为同主题原创内容，知识点与官方大纲对齐。