Unit 4 Isn’t it wonderful?
In this unit, you will learn to:1.Get to know different inventions2. Discuss the impact of inventions3. Turn small thoughts into great ideas
invention n. 创造（物）invent v. 创造，创造，编造inventor n. 创造家
clearly adv. 清楚地clear adj. 清楚     v. 清理
display n. 展示，展览，表现v. 显示，陈列，展出
pocket n. 口袋
laser n. 激光 （镭射）
turn into 变成turn sth./sb. into 把……变成
full-size adj. 原尺寸
type v. 打字 n. 类型，种类，字体