《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 2 unit 4基础知识**************************** ⅰ 重点词汇 1. suggest