《学习目标》 1. grasp the important words and phrases in the two units and improve your ability to express yourself in english. 2. learn the method of constructing knowledge trees through self-study and cooperative exploration. 3. enjoy the beauty of english with a strong passion. 《课前预习》 ***************************book 4 unit 2基础知识*************************** ⅰ重点词汇 1. regret (regretted;regretted)v. 后悔;遗憾 n. 遗憾 regretful adj. 后悔的