Role-play the conversation
Linda: Mom, I’m really worried.
Mom: Why? What’s wrong?
Linda: I can’t find my schoolbag.
Mom: Well, where did you last put it?
Linda: I can’t remember! I attended a concert yesterday so it might still be in the music hall.
Mom: Do you have anything valuable in your schoolbag?
Linda: No, just my books, my pink hair band and some tennis balls.
Mom: So it can’t be stolen.
Linda: Oh, wait! I went to a picnic after the concert. I remember I had my schoolbag with me at the picnic.
Mom: So could it still be at the park?
Linda: Yes. I left early, before the rest of my friends. I think somebody must have picked it up. I’ll call them now to check if anybody has it.
参考译文
Linda: 妈妈，我真的很担心。
Mom: 为什么？怎么了？
Linda: 我找不到我的书包了。
Mom: 嗯，你最后把它放在哪儿了？
Linda: 我记不得了！我昨天参加了一场音乐会，所以它可能还在音乐厅里。
Mom: 你的书包里有贵重物品吗？
Linda: 没有，只有我的书、我的粉色发带和一些网球。
Mom: 所以它不可能被偷。
Linda: 哦，等等！音乐会后我去野餐了。我记得野餐的时候我带着书包呢。
Mom: 那它有可能还在公园吗？
Linda: 有可能。我比其他朋友离开得早。我觉得肯定有人捡到它了。我现在就给他们打电话，看看有没有人捡到。
Key Words
attend 侧重 “到场、出席”，不强调主动参与或互动
take part in 侧重 “主动参与并发挥作用”，强调过程和投入
join 侧重 “加入某个组织、团体或人群”，成为其中一员
join in 侧重 “参与正在进行的活动”，强调临时加入
- He joined in talking about their favorite movies.
- We must attend the school meeting tomorrow.
- They plan to take part in the volunteer activity next month.
- My brother wants to join the army after graduation.
“valuable”（有价值的）和 “worthless”（无价值的）是一对反义词，分别表示事物具有重要性或毫无价值。
- The antique vase my grandma left is valuable, but the cheap copy I bought is worthless.
- Some people think old books are worthless, but I find them valuable for learning about history.
the rest of + 名词/代词 意为“剩余的”
- Some students are playing basketball, and the rest of the class are reading in the library.
- Half of the books are new, and the rest of them are second-hand.
- She drank a cup of water, and the rest of the juice is for you.
- He spent half his money on books, and the rest (of the money) was used to buy clothes. *省略名词（语境明确时）
Key Structures
询问某人怎么了的句型：What’s wrong（+with + 某人/某物）?
- You look sad. What’s wrong with you?
- The computer won’t start. What’s wrong with it?
*当双方知道谈论的对象时，可省略 “with + 某人 / 某物”，直接用 “What’s wrong?”。该句型没有时态变化，无论询问现在还是过去的情况，都用一般现在时（因侧重 “当前呈现的问题”）。