武器库 | Core Arsenal
动词搭配不要记错哦：
Mechanical
zipper 🤐1893 📅
Utility
ice-cream scoop 🍦shoes with lights 👟
避坑雷达 | Grammar Radar
Subject + was/were + Past Participle
🚨 高频易错点 Warning!
❌
It was invent in 1893.
Missing the past participle ending.
✅
It was invented in 1893.
Passive voice requires the past participle (V-ed).
通行证 | Can-Do Goals
学完本课，你能做到：
描述某物是什么时候被发明的
When was it invented?
描述某物是由谁发明的
Who was it invented by?
解释日常用品的具体功能
What is it used for?
🌎
Culture Bit: Victorian Ingenuity
在维多利亚时代，像 Whitcomb Judson 这样的发明家彻底改变了生活。拉链的出现不仅仅是为了方便，它代表了人类从“生存需求”向“精致设计”的转变，与贝尔发明的电话一样，都是时代的奇迹！