💬 核心句型 本单元必须会说会用
What did ancient people put in it? How did dumplings come to Xinjiang?
Really? $^{2}$ ____ (when / they / find) it?
in the mooncake?
5 What did Pepys do with his cheese?
How was Pepys' life similar to your life? How was his life different from your life?
We don't know because we can't open it!
📐 语法要点 理解规则，举一反三
1
ago 过去时间
ago 用于过去式：two years ago 两年前。
People lived in caves long ago.
2
一般过去时
描述过去发生的事用动词过去式。
They made tools from stone.
3
疑问句 Did
Did + 主语 + 动词原形? 用 Yes/No 回答。
Did they have TVs? No, they didn't.
4
过去否定
didn't + 动词原形。
They didn't have computers.