三、Read and judge. Dongdong 正在逛一家文具店。请你读一读，根据对话内容，判断下列句子是(√)否(×)正确。
Dongdong: Excuse me. How much is this pen?
Shopkeeper(店主): It's nine yuan.
Dongdong: OK. I'll take two.
Shopkeeper: Eighteen yuan, please. Anything else(还要别的吗)?
Dongdong: Yes. How much is this notebook(笔记本)?
Shopkeeper: Six yuan. How many do you need?
Dongdong: I need three. How about three for fifteen yuan?
Shopkeeper: OK.
()1. Dongdong pays eighteen yuan for two pens.
()2. Dongdong needs two notebooks.
()3. Dongdong pays five yuan for three notebooks.
()4. Dongdong buys(购买) three pens and two notebooks.

1. √ 2. × 3. × 4. ×

四、Do and say. 同学们正在玩“比比谁算得快”的游戏。快和你的小伙伴一起照样子做一做、说一说吧！

可参考以下多组练习示例和同伴完成游戏：
1. A: One and three makes ... B: Four.
2. A: Five and two makes ... B: Seven.
3. A: Ten and four makes ... B: Fourteen.
4. A: Seven and eight makes ... B: Fifteen.

本题是结合加法运算的英语口语互动练习，核心玩法是一名同学用英文说出两个相加的数字，用and连接引出待计算的结果，另一名同学快速说出对应计算结果的英文数字，参考题图示例6+9=15的问答逻辑，替换不同的相加数字即可完成游戏，能帮助巩固已学的英文数字词汇。