7字诀：把一句话搭成一栋楼（第 4 课）
这一课先练两种"零件"——do1 to do2（目的）和 N + that + 动词（定语从句），再把它们装进 7 字诀（语 / 喜 / 感 / 状 / 名 / 定 / 习），最后用 DELTA 3 Plus 做一次产品介绍实战。
一、热身：一段听力填空（Tiny Engineers, ages 4–5）
Activities
• Create a cover for an 1 ______ so they can drop it from a height without breaking it.
• Take part in a competition to build the tallest 2 ______.
• Make a 3 ______ powered by a balloon.
答案：1 egg（已填）；2 tower / 3 car（参考答案，以听力原文为准）。
这段的三个动词句，正好藏着这一课的两个公式：create a cover for an egg / take part in a competition to build… / make a car powered by a balloon。
二、公式一：do1 to do2（第二个动词用 to 领进来，表目的）
| 例句 | 说清楚什么 |
|---|---|
I read to gain some knowledge. | 读（do1）→ 为了获得知识（to do2） |
I jump to be happy.（＝ I jump, so I am happy.） | 同一个意思，两种说法：to do 表目的 / so 表结果 |
read to stay happy | to do2 换成别的动词，结构不动 |
to David to show my concerns | 先给人（to David），再给目的（to show…） |
要点：to 是不定式的提示词；但 to 也可以是介词（后面跟 -ing），例如 use sth to do sth——看 to 后面是动词原形还是名词/-ing。
三、公式二：N + that + 动词（定语从句的两条规矩）
规矩 1：that 代替左边紧挨着的那个名词
规矩 2：that 要在右边的句子里做主语或宾语| 例句 | 拆解 |
|---|---|
that goes round an egg | that = cover（左边紧挨的名词），在从句里做主语 |
I like reading books that make me gain some knowledge. | that = books，从句主语是 that |
The book that you gave me is brilliant. | that = book，在从句里做宾语（动词的接受者：gave me the book） |
The legend of Zelda is the game that I think is the most excellent. | that = game，做从句里的宾语（I think） |
…the game that makes me feel relaxed | that = game，做从句主语 |
语义检查（重点）：原句 I like reading some books that can gain some knowledge——书不能自己 gain knowledge，这叫主谓不当（就像说"我吃水"）。改成使役：
make sb do sth（使役：使/让某人做某事）
→ I like reading books that make me gain some knowledge.
另一例：make me 使我…do sth / read the room.（看场合、看气氛）四、that / which：主与宾，以及"太宽泛"怎么办
- 主/宾都能用 that / which；
that100% 指名词。 - 放主语：The legend of Zelda is the game that makes me feel relaxed.
- 放宾语：The legend of Zelda is the game that I think is the best.
当你觉得说得太宽泛时，就在后面补限定（原话）：
| 补什么 | 例子 |
|---|---|
| + in some place（地点） | …makes me feel relaxed in the fantasy world that I created in my own fantasy. |
| + when（时间） | 说习惯/场景时挂上去 |
| + 领域（形象 vs 抽象） | 形象：coffee shop；抽象：in communication ＝ in spoken English |
| + 具体表现 | I like books that make me do better in my academic performance.（介词 + 地点状语） |
五、成分与词性：先把积木分清楚
| 成分 | 词性 |
|---|---|
| 1 主语 2 谓语 3 宾语 | 1 动词 verb 2 名词 noun 3 形容词 adj 4 副词 adv |
名1 + 动 + 名2（造句从这里开始）：
I like David. / I like tiger.
Shayla likes playing games. ← 事情＝"玩游戏"这件事儿（-ing 当名词用）
David is a person that I like. ← that 在从句里做宾语（所以能省略）六、过去分词作定语：一个词当形容词用
The US created a plan agreed upon by both parties to restore the local economy.
↑过去分词作定语：双方"已同意"的计划（被动）
a hidden sound track ← hidden（隐藏的）也是一个过去分词定语顺带复习第 2 课：agreed upon by both parties 就是 MOU 那句里的同一个结构。
七、what 从句：把"一件事"装进杯子
用了一个"容器"比喻：what = 杯子，把"事情"装起来；只有名词才能被定义。
| 例句 | 拆解 |
|---|---|
what I need is a cup of coffee. | what I need（我需要的东西）＝ 主语从句 |
a cup of coffee is what I need. | 也可以倒过来：what 从句做表语 |
what I need is on the desk.（the bottle is on the desk） | what 从句做主语，后面接状态 |
what I wanna say is (that) you are solid. | 我想说的是→你很棒。（"你很棒"是句子，所以要加 that 变名词） |
that I am into Jack is not a secret. | 句子变名词＝ + that，然后它就能当主语 |
that you are solid is what I wanna say. | 两个名词性从句对调位置，意思不变 |
纠错：I wanna say is you are good ✗——不是名词，错了；要么用 what（名词性从句），要么给句子加 that。
名词性从句 vs 定语从句（一句话分清）：what I wanna say 不修饰任何东西（它就是"一件事"）；N + that + 动词 一定修饰左边那个名词。
口语里很好用的一组：I know what's on your mind… / I know what concerns you. / I've been there.（我是过来人。）
八、非限制性定语从句：加不加逗号，意思完全不同
The students who are lazy will fail the exam. → 那一部分懒惰的学生（一班 50 人里的几个）
The students, who are lazy, will fail the exam. → 全部学生都懒（逗号 = 补充说明，等于全班）用这个例子说明：加逗号＝补充信息（去掉不影响主句）；不加逗号＝限定（去掉意思就变了）。
同款例句：
I am really into photography; however, it costs me a fortune, which I don't have,
because I haven't learned my bread and butter yet.
↑which 补充说明（我没有的那笔钱）九、7 字诀总表（7-word mantra）
| # | 字 | 句式 | 作用 |
|---|---|---|---|
| 1 | 语 | so, look（你看！） | 开口把人拉住 |
| 2 | 喜 | I'm a big fan of ___ | 先表态 |
| 3 | 感 | it's like ___ | 打一个比方 |
| 4 | 状 | when it comes to ___ | 把话题收到具体场景 |
| 5 | 名 | what that means is … | 用名词性从句收束（意思是……） |
| 6 | 定 | Noun that Verb | 给名词加画面/功能 |
| 7 | 习 | 习惯用语、地道表达 | 收入 bread and butter；bring home the bacon（我爸爸挣钱养家） |
组合用法：1+6、2+5+6——不必七个全用，挑几个拼起来就行。例子：
…, which is the AI-integrated inverter, that provides pure sine wave output.十、实战：讲 DELTA 3 Plus（按 7 字诀搭一遍）
开场问题（你可以自己先答）：why 3 plus??? / what is a 3 plus? / how do you think of 3 plus?
① 语 + 定：So, look — I am gonna show a fact / a story that most people never think about.
② 喜：Personally, I am a big fan of big numbers, and what I love most about the 3 Plus is…
（说人：a tech savvy 技术迷 / a tech geek 极客）
③ 名（what 从句 + 定语从句套起来）：
What I love most about the 3 Plus is something that you can't even see on the box,
which is the AI-integrated inverter that provides pure sine wave output.
⑤ 收尾：It provides you a more stable electricity supply.（built-in AI）练口备用问题：Do you like headphones? / Do you like cars? / Do you like watches?
十一、本页词汇与发音
| 词 | 意思 / 说明 |
|---|---|
keystone | 基石（stone 石；keystone species 关键物种——第 3 课阅读里见过） |
plain | 直白的、平铺直叙的（注意与 pain、pen 的发音区别） |
realm | 领域 |
down | 情绪低：I am kinda down today. |
meme | 迷因、梗图：the meme went viral（这梗图火了） |
go home | home 在这里是副词（不加 to）：go home / go to the office |
bread and butter | 看家本领、收入来源；bring home the bacon 挣钱养家 |
十二、本页打卡
- 能用 do1 to do2 说三句（I read to gain… / I jump to be happy. / to David to show my concerns）
- 能说出定语从句两条规矩：that 代替左边紧挨的名词、并在右边句子里做主语或宾语
- 会用 make sb do sth 改造错句（books that make me gain some knowledge）
- 会用 what 从句：what I need is… / what I wanna say is (that) you are solid.
- 能说出加逗号与不加逗号的区别（the students who are lazy / the students, who are lazy,）
- 能背 7 字诀：语 / 喜 / 感 / 状 / 名 / 定 / 习，各配一个自己的句子
- 能用 7 字诀把 DELTA 3 Plus 讲一段（what I love most about the 3 Plus is…）